A faulty ignition coil or a clogged fuel filter can cause this issue. Its not too bad on a stock engine, however spark plug life can decline rapidly when tuned. Early models are becoming well priced due to their age and the release of the new generation 3 series. Tune only cars are able to push over 260 wheel horsepower and 290 wheel torque. We wrote an article about the max boost the stock B48 turbo is capable of. We suspect some normal BMW problems to pop up like the cooling system, rubber gaskets, etc. 4. A catless downpipe on the B48 will offer about 15-25whp gains. One common issue with the B48 engine is a rough idle. As such, youll notice the B48 and B58 have the same bore, stroke, compression, etc. I live in the Bay Area, CA. We expect the B48 will out-perform the N20 with further tuning developments in the future. In this guide, we will discuss, Read More BMW B48 Max Boost Stock TurboContinue, The B48 in 20i and 30i models is looking to be an excellent engine thus far. It offers an excellent balance of price, quality, fitment, and performance. Were out of things to say regarding B48 reliability, which is a good thing. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. Pressure test the cooling system to attempt to find the leak. Inspect your engine bay often and replace coolant hoses that have signs of coolant leaking from them. Direct injection (DI) engines come with one flaw, which is carbon build-up on intake valves. Stage 2 93 octane: 22%HP / 25%TQ The new B47 engine replaces the N47 power unit and like its predecessor is a four cylinder in-line, common rail injection, 1,995 cc displacement with a single turbocharger with variable turbine geometry. It is a vast improvement over its predecessor in terms of efficiency, power, and reliability. Some have issues with coolant loss. Thats it. BMW B58 Engine. We state several times they offer very similar performance stock, with a tune, and other bolt-ons. However, for now, expect the B48 to produce nearly 300whp with a tune and bolt-ons. The most important aspect is sticking with a quality, trusted tune. Like this content? BMW reliability seems to be trending in the right direction, though. Water actually offers better cooling benefits than actual coolant. It's. PIcs? Submit! Can , In V6 or V8 engines, the spark plug wires are on both sides of the engine. A. Autoputzer 168 Replies. Somebody knows? 11.0:1 compression ratio. Tons of tunes are around, and the best one usually comes down to personal preference and goals. The only thing they have in common is that they are both 2L turbos. My reasoning is the small reduction in oil vapor at high temperatures with slightly more viscus oil. Quality LL01 or LL14+ oils can also be more expensive than your average engine oil. Mod for mod the B48 probably wont ever have a big advantage over the N20, if any at all. Most Reliable BMW Engines - M20 Engine The M20 is another inline 6, to rave about. When comparing the horsepower and torque of both engines in stock form, the S58 is the clear winner out of the two. We recommend changing the B48 oil every 5,000 to 8,000 miles. Leave a comment and let us know! Though, this is on built N20s with a larger turbo. Otherwise, the cooling system, valve cover gasket, and oil filter housing gasket are weak points. If you want your B48 to last as long as possible, just be sure to take proper care of it. We also use third-party cookies that help us analyze and understand how you use this website. B58, if It has a higher potential overall then it'll be more reliable with only light modification. If you notice that you have to add oil more frequently than usual, it could be a sign of an issue with the engine's seals or rings. Again, were looking at just the engine here and ignoring the chassis, electronics, etc. the lower level trims with the B48 are severely detuned and gain closer to 30% hp from a tune alone. We know the older 2.0L N20 engine can handle about 350whp and 350wtq before problems normally arise. The engine is being included in the also new bmw x1. The JB4 is the most advanced and highly featured tuning system available for your B38/B46/B48 MINI. T. TheNine90 192 Replies. The cookie is used to store the user consent for the cookies in the category "Performance". Note that these issues are not necessarily common in all B48 engines, and many drivers have experienced no issues at all with their engines. Please let me know Starting at the fourth digit, 4A12 will be F36 420i N20 RHD, and 4D32 will be F36 420i B48 RHD. Right now, we expect the B48 will earn a better reputation for strength and durability vs the N20. Read our post about B48 mods here: BMW B48 300whp. Basically, coolant circulates through the heat exchanger for cooling and then runs into the top mount IC to cool the charge air. Despite the initial prejudice against the N20, everyday buyers and . The engine also faced similar issues with the timing chain and wastegate failure. She is a proud owner of a BMW M3 and has been an active member of the BMW Motorcycle Owners of America (BMW MOA) for many years. Gains with bolt-on parts, higher octane, E85 mixtures, and larger turbos are even higher. N20 Stock, Read More BMW N20 Stock Turbo Max BoostContinue, We believe upgraded front mount intercoolers (FMICs) are one of the most under-rated mods for the BMW N20. bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. That said, the main water pump on the B48 can fail unexpectedly, leaving the car in limp mode or leaving you stranded in the worst-case scenario. Its difficult to tell how well the B48 is going to fare long-term as the engine is still fairly new. Explore Our Forums. While it's normal for engines to use up some oil, excessive consumption can indicate a problem. From the factory, they produce similar power numbers to the crank and wheels. Yes, we believe the BMW B48 is a pretty reliable engine. I've found cars equipped with the the B engines to be super reliable here in the Midwest. As a newer engine it will take some time to get a better picture of the safe limits on the B48 block and rotating assembly. There is still a lot of time, development, and testing, Read More BMW B48 Upgraded Turbo GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. Some B48 and B58 owners even go for thicker 0W-40 and 5W-40 oils. Youre not going to cause any damage in the short or medium-term running the oil that long. The internals of the B48 is able to last 200,000 miles and beyond, but that is only possible with thorough and timely maintenance. *This article is in reference to the B48 engine itself. BMW N20 Engine Reliability, Known Issues, and More. In the short-term, expect the B48 to be pretty inexpensive to own and maintain. This cookie is set by GDPR Cookie Consent plugin. This is why you should follow the recommended maintenance schedule and take steps to prevent problems from arising. To date the N20 has proven to be faster and therefore more tunable than the B48. Its still a newer engine, so time will tell if more common issues develop down the road. We always recommend an upgraded intake as the first mod to make on the, Read More BMW B48 Upgraded Intake GuideContinue, This is a question that comes up often. Dmitry has been an editor and author at Cararac.com since 2015. Yes, the B48 crank and connecting rods are forged as with the larger B58 6-cylinder. BMW B48 Stage 1 91 octane: up to 14% HP / 26% TQ A fairly common issue on early-production BMW B48s issue is a turbo return line leak. However, B48 is the widely accepted engine code for the B46 and B48. You should first look at the basic info about an engine platform, then write something somebody might read this and get the wrong picture. You also have the option to opt-out of these cookies. A tune and bolt-ons push the N20 to 300+whp. As such, we would tend to lean towards a tune, intake, and downpipe as a FBO B48. Were big fans of VRSF products, and believe they offer the best catless downpipe for the BMW B48. A related problem here is a defective turbocharger. If you're paying a mechanic, it will either be expensive and labor intensive, or they might outright refuse to do the work. This ensures a precise, strong fit. If your PCV system doesnt work then yes you can add a catch can. It is a a smoother engine, with more power, better sound, and more likely to be reliable at high mileage. It requires a shop vac and walnut media shells. The cookie is used to store the user consent for the cookies in the category "Other. Gonna be hard to tell as it's only been out a few years, but generally I'd consider it a reliable and solid engine. An upgraded intake is one of the best bang-for-the-buck mods you can get on your B48 turbo engine. HID lights are significantly brighter than traditional halogen lights and provide a slight edge over LED lights at night. Under the hood of the Toyota Supra 2.0 is BMW's B48 engine, which packs 258 horsepower and 295 lb-ft of torque. Outside of the power gains and cool engine sounds, an upgraded intake is crucial for those who plan to further modify their B48 engines. BMW reliability seems to be trending in the right direction, though. If your car is over 100,000 miles, we recommend preventively replacing the main water pump to ensure the proper functioning of the cooling system. They did tweak the design a little bit, but its still a testament to the reliability of the B48. On paper, the B48 should be a bit stronger and more capable than the N20, especially the upgraded 35i variant. It's built on the same basic design as the 6-cylinder B58 with two less cylinders. Stage 2 93 octane: up to 18% HP / 28% TQ Ignition coils also wear pretty quickly on turbo engines like the B48. Yes, we believe the BMW B48 is a pretty reliable engine. BMW is long known for their ability to build beautiful inline 6 engines. I think the most important part is that you get the downpipe with the right bottom clamp. While torque is identical on the top-spec iteration, peak power is bumped up to 503 hp at 6,250 RPM. It is a well maintained one at 130k miles. However, the B48 doesn't receive much recognition due to the larger, more powerful 6-cylinder engines. Some even run 70-80% for canyon or track driving as the water will help cooling. Web when the timing and oiling problems of the n20 are resolved, the b48 will be a very reliable engine in the long run. Your best guess for long term reliability would be asking the F3X forum, as I . So far, the B48 appears the more reliable engine. Mini Cooper S Mods Summary While the N47 in the xDrive18d and xDrive20d made 143 and 184, the new B47 provides 150 and 190 bhp. Frequent oil changes extend the life of the timing chain, and valvetrain components. However, you may make it well past without issues. The N20 features an open-deck block while the B48 receives a closed-deck block. *Well write a B48 common problems post in the future. Ask questions or send a hint for future articles on the author's page. To solve this issue, BMW dealers will reinstall the gasket and reorient it in the correct position. Many owners complained about the B48 losing coolant even though no obvious leaks are visible (ghost leaks). This article and page is such a joy to read. Compared with its N20 predecessor, the B48 uses a more undersquare design. Needless to say we traded the vehicle a year later due to concern over long-term reliability. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Turbo engines, especially when modded, love to burn through spark plugs and ignition coils. Just past 55k miles on it. How much PSI can the B48 stock turbo handle without ruining longevity? B46 vs B48 Emissions Emissions standards are really the . Its a single turbo. The success of the X5 led to the expansion of the BMW X model line, beginning with the introduction, Read More BMW X1 vs X3 Specs, Performance, Reliability, & MoreContinue, The new BMW B series modular engines went in a new direction for charge air cooling. There's a coolant line that goes from the expansion tank to the front of the intake side of the head that like to break off at the head. What are your thoughts and experiences with the N20 and/or B48? The BMW B46 and B48 are basically the same engine. It couldnt be more different than the N20. The B46 is the Super Ultra Low Emissions spec (SULEV) and that is the standard engine in the US market. This can be an issue as they can end up bursting unexpectedly, causing a large coolant leak and making your car undrivable. As with the N20, the B48 comes slightly underrated from the factory. We recommend switching to these spark plugs if youre pushing the limit of the B48 turbo or upgrade the turbo. B48 pistons are cast, but remain fairly strong. Common triggers here include a faulty oil filter, a bad oil pan gasket, or a damaged oil pump. These small 2.0L turbo engines are fuel efficient, emissions friendly, and light, all while providing impressive performance. Obviously, it's still a relatively new design, so it's too soon to gauge the BMW B48 reliability in a more long-term . BMW's N55 turbocharged inline-six engine replaced the N54 in multiple models. See here for data: BMW N20 / B48 Quarter Mile Rankings, https://www.facebook.com/groups/244324833434651. However, coolant helps lower the freezing point and increase the boiling point. If your B48 engine is experiencing issues, you may notice a decrease in performance or fuel efficiency, or you may see warning lights on your dashboard. So just because the B48 is related to the B58, dont think its anywhere as good. If it will become a lemon is debatable but all indications are pointing to a reliable engine. At higher mileage, excess carbon build-up might lead to a rough idle. Stick with known, quality oils. Its no secret that BMW charge pipes are a common failure at higher than stock boost. Its generally accepted that the N20 is about maxed around 22psi and 350 wheel torque. We wish we had more technical data to share. B48 oil capacity is 5.25 liters (5.55 quarts). Nonetheless, well lay it out as straight forward as possible. Both the N20 and B48 pack small 2.0L turbo engines that produce impressive power for their size. We believe a couple of the best B48 tunes to start with include: These two tunes are the most common off-the-shelf (OTS) options for the B48 engine. She has had the car since new and it now has around 70k km on. Weve seen dynos showing nearly 400whp. That is not to say either engine is unreliable. Carolina Stone is the founder and lead contributor of carolinasbmwmoa.org, a popular blog dedicated to all things about BMWs. ~300-350whp. E90/E91/E92/E93 (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010) Top Contributors this Month View All shawnsheridan 442 Replies. Yes, we think the BMW B48 engine is fairly dependable. What do you think of the ER charge pipe? Or once a year whichever comes first. This cookie is set by GDPR Cookie Consent plugin. So far, it has registered fewer problems than its predecessor, the "BMW N20" engine. Carbon buildup is a common issue that can affect any engine with direct injection such as the B48. Is the B48 reliable? Save my name, email, and website in this browser for the next time I comment. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW X1 vs X3 Specs, Performance, Reliability, & More. Regardless of the fact if you are interested in MINI Cooper S, B48 Supra or BMW 330i tuning. Required fields are marked *. The B58 engine was named Worlds 10 Best Engines in 2016 (installed in the 340i and 440i), 2016, 2018, and 2022 (M240i), X3 and X4 M40i, Z4 M40i, 2019 (X5) and 2019(M340i). Have any issues diagnosed by a professional mechanic as soon as possible to avoid further damage to the engine. Definitely a sound improvement for the B48. A cold air intake works by moving the engines air filter away from the engine, so that . You could do a full big turbo stock block b58 build in a day on stands with a floor jack. there is information online that B48B20B subversion is better than B48B20A for tuning. . Your email address will not be published. Usually rough idle is due to an underlying problem or past due maintenance. However, the Champion spark plugs hold up very well for a stock turbo B48. Stage 1 E30 octane: 21%HP / 24%TQ Were big fans of the JB4 as a starting tune since it allows precise boost control and lots of possibilities. So the B47 engines suffer from timing failure also. This cookie is set by GDPR Cookie Consent plugin. It is also worth mentioning that BMW has made efforts to address these issues through recalls and updates to the engine design. Additionally, responsible for delivering the impressive power, the upgraded 302hp B48 receives a larger turbo. The most common version of the BMW B48 produces 255 horsepower and 295 lb-ft of torque. Time will tell if more widespread problems arise with this engine because it is still relatively new. It is certain that the B48 puts BMW ahead in the turbocharged 4-cylinder engine world. 82.0 mm bore x 94.6mm stroke (3.23 x 3.72). Stage 2 E30 octane: up to 22% HP / 30% TQ. While , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. Its like comparing an infiniti q60 non-redsport to a Q60 redsport variantthe non redsport (cheaper model with 100 less hp) will gain over 100 whp from a tune alone, where the redsport gains 30-50 whp at best. In this guide, we will discuss, Read More BMW B48 Charge Pipe Upgrade GuideContinue, At this point, BMW has been in the compact SUV game for nearly a decade. BMW does consider B48 engine coolant to be a lifetime fluid. Theres a recall on B48 for the cylinder head ventilation line: Its a tight engine but Im sure a tuner can point you in the right direction for that. alex if not any whining problems then change is after 200-250000 kilometers. You can say we are somewhat N54 fanatics. It also helps prevent corrosion. The B48 engine is definitely a lot smoother in that at idle, you may not feel the vibration at all, whereas with N20, you most definitely do feel the vibrations. Stage 1 93 octane: 18%HP / 22%TQ Like any engine, the BMW B48 engine can experience issues. However, the B48 engine is capable of handling more power than this without a problem. Well, nothing is perfect. (I don't own one, but from what I've heard). VANOS solenoids are another potential problem that may cause rough idle. Its reliable, efficient, and sporty. Its also not overly expensive, especially for those willing to DIY some maintenance. Regardless, in this post we will lay it out as clearly as possible. Stage 2 91 octane: up to 16% HP / 28% TQ In this section, well break down the above maintenance. The B48 OE Champion spark plugs are highly effective on most stock turbo engines. Additionally, more frequent oil changes are always a good idea. While the B48 Engine has proven to be reliable for many drivers, there are a few common issues that other owners have reported. Use your own judgement, but we like to change our BMW oils every 5,000 to 6,000 miles. ~325-350wtq. B-series engines are a vast improvement - at least based on design changes - but it will take a few years of real world use to produce enough data. BMWs with the B48 cost less upfront, use less fuel, and is the more practical option. B48/46 is not basically the same engine. Of course, theres always risk in increasing power, torque, and boost. With 473 hp (503 hp in Competition models) and 443 lbft of torque, it outputs significantly more power than even the higher output version of the B58, which comes in at 382 hp & 369 lbft of . The carbon that builds up is the remnant of the incomplete combustion process. Is a brake light and running light the same? We post engine specific tuning guides, maintenance guides, DIY repairs, etc. Great read. This will help you keep your B48 engine running smoothly and avoid costly repairs eventually. As per the N20, the block and head are made from aluminium. 4. Is the BMW 2.0 turbo engine reliability? Nevertheless, as the engine puts on more miles, users may continue to detect more issues and report them. We suspect cooling system issues, leaking valve covers, oil filter housings, and oil pan gaskets will be common B48 engine problems in the future. The bm3 tune from Pro Tuning Freaks uses a mobile app and web interface for simple flash tuning. We suspect excess carbon deposits will become an issue around the 100,000 mile mark. Overall, it is a reliable engine with a low maintenance cost. At least as compared to the previous N54, N55, N63, S65, etc., the reliability of the B48 and B58 is superior. We are hoping to soon add an F80 M3 and F82 M4 GTS. Keep up the good work!!! BMW's B48 engine is also the successor to the 2.0L turbo N20 engine. Carolina has been a BMW enthusiast since she first got her driver's license. Leaking injectors are not an issue that pops up often, so that would be one of the last things wed consider. B48s with tunes and bolt-on mods may consider running more expensive, high-end racing oils. Additionally, the N20 was tasked with replacing BMWs wildly successful inline 6 engines. Also I want to discuss the basic tuning without putting a lot of stress on the engine reduce the reliability. Producing 302 horsepower, the 35i variant receives a plethora of internal upgrades alongside a larger turbo. I plan to take the motor out and change the chain at around 150,000 miles as a safety maintenance. Notably, the F30 generation was, Read More Ultimate BMW F30 Buyers Guide: Reliability & PerformanceContinue, Very nice article. Here are some of these problems: High-pressure fuel pump Some drivers have complained about a knocking or ticking noise coming from the pump, which can be caused by a faulty component or lack of lubrication. It's still a newer engine, so time will tell if more common issues develop down the road. The most powerful version, found in 28i models, makes 241hp and 258tq. Low 300s is likely the more realistic ballpark. The BMW N20 and B48 have big reputations to live up to. I've replaced a couple of water pumps but have yet to see one leak oil. thanks so much for the write up. It couldn't be more different than the N20. The great news is the B48 is off to an excellent start from a reliability perspective. '06 they did add it back. If left unchecked, the engine could run low on coolant. (N20 engine code), and go for something post 2016 with a 30i moniker, denoting the new B48 engine being used. Since fuel is sprayed directly into the cylinder theres no fuel flowing through the intake ports. Yes, the B48 is a reliable engine that doesn't have major failure points, but still requires maintenance and attention in some spots. B48 reliability and efficiency N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > B48 reliability and efficiency Search this Thread Post Reply Page 1 of 3 1 2 3 > Bookmarks twitter Facebook Digg Google StumbleUpon del.icio.us My Yahoo! However, its really too new to tell what may pop up down the road. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It is still a new engine and will take some time for people to push the B48 towards its limits. I will dyno it before mapping as it feels more like 200 bhp but I've been quoted 260 on the remap. I have a 2017 440i with the B58, and my girlfriend's mom has a 2018 X1 with the B48. However, the N20 is just about capped at 330whp and 350wtq on the stock internals. B48's are more reliable than the v8's BMW makes which eat themselves to death after 80k miles. Why? These cookies will be stored in your browser only with your consent. BMW reliability seems to be trending in the right direction, though. No we dont agree with the lifetime coolant designation. do you think that is true and why is that? This mostly applies to N20s produced prior to 2015. Thanks. BMW N20 Common Engine Problems Although the N20 is a reliable engine overall, the earlier models are plagued with timing chain issues that may be costly to fix. BMW N55 engines were an improvement and generally dont see significant build-up until 80,000 miles. 20i models generally receive the lower output B48 engines. The B58 is a marginally larger engine displacing 2,998cc compared to the N55s 2,979cc and weighs 18 lbs more, but while making notably more power. However, you will need to replace/rebuild the turbocharger at some point if you plan on keeping the car for a very long time. Some BMW owners experience an oil leak with their B48 engine. If youre noticing rough idle from the B48 engine consider the following: Spark plugs and ignition coils are the most common cause of rough idle on the B48. How do the BMW N20 and B48 engines stack up? The BMW X5 really put the Bavarian marque on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models. B46s meet SULEV emissions standards and are the primary engines in the US market. At least in the US. Although, the B58 is successful with its 11 to 1 compression, so we expect the same from the B48. Whether you're tuning or not a b58 is a better engine than the n55. In most cases, you can repair a faulty BMW B48 engine. Check the website again, they finally corrected the values. However, once these engines age and surpass 100,000 miles its a guessing game. The lines might be long and itll be a wait and see for codes. Not too expensive, but they can add up over time. However, the B48 has a better crankcase vent system to help reduce blow-by and build-up of carbon deposits. Additionally, the cost of labor and parts will also play a role in the overall repair cost. They power 20i, 25i, 28i, and 30i models; a large percentage of all BMW models. This helps the engine support the additional boost and power. What is the max boost the N20 stock turbo can handle? No issues with my 2018 B46. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. This cookie is set by GDPR Cookie Consent plugin. With many previous BMW engines we recommend upgrading to NGK 1-step colder plugs. However, this likely comes down to many being under warranty with few modded. This issue is caused by an incorrectly assembled asbestos-free gasket. 3) How can I tell if my B48 engine is experiencing issues? BMW recommends oil changes every 10,000 miles. Analytical cookies are used to understand how visitors interact with the website. Do NOT follow this link or you will be banned from the site! Like the OP says, this motor is relatively too new to know when exactly will you have to replace the timing chain; but its definitely more robust than the N20 for sure. Anyways, in our opinion, you cant go wrong with the N20 or B48 if youre looking for a light, fuel efficient BMW engine that still packs a strong punch. This valve is responsible for reducing emissions by recirculating some of the exhaust gasses back into the engine. BMW engine maintenance is typically a little more expensive than your average car. Longevity is a tough topic to discuss, and that includes the B48. For a better experience, please enable JavaScript in your browser before proceeding. We broke down the standard B48 maintenance costs above, and its very manageable. The Fora platform includes forum software by XenForo. That is not at all a knock to the N20 or B48, but it is reality. Rough idle can be a frequent issue on many engines. https://www.mgflasher.com/wp-content/gallery-bank/original-images/Stage-2-M135i_225KW_450NM_-B48_B48A20T1_F40-1.png, https://static.nhtsa.gov/odi/tsbs/2022/MC-10212788-9999.pdf. Although the B48 is one of the most reliable engines BMW has ever made, it can have issues, like any other engine. *Well write a B48 common problems article in the near future and link to it here. The B47 has proven to be reliable so far in my mothers 320d. These engines perform great and have very good fuel economy. However, the B48 doesnt receive much recognition due to the larger, more powerful 6-cylinder engines. Otherwise, the N20 is plagued by typical BMW issues. pretty cost prohibitive though. Not too bad for a 2.0L engine. JavaScript is disabled. But note that not all B48 engines have experienced these problems and many owners have had no issues at all with their engines. Most B48 models are limited to around 130mph or 155mph. Throw a few bolt-ons and some E85 in the mix and youve got an engine capable of pushing upwards of 300whp. Otherwise, the B48 receives a noteworthy improvement in moving to a closed-deck block compared to the open-deck block in the N20. Nowack (SAE SN) test a bit lower with higher viscosity oil. Its still early in the world of tuning the B48. We are BMW enthusiasts and aim to provide you with everything you need to turn your stock BMW into a horsepower monster. For most, it probably makes sense to upgrade to the turbo inline 6 engines if youre looking for 330+whp. Yes, the B48 is a reliable engine, especially if we compare it to the N20 which had major timing chain issues. Bringing the BMW community together. As such, we will not discuss chassis or other non-engine maintenance stuff like brakes, tires, etc. The only thing they have in common is that they are both 2L turbos. Assuming a standard 15% drive-train loss the N20 is closer to 270 horsepower. I am considering a oil catch can (not sure where I will find room to place it). "Emission System Problem" in Honda Civic - What Does This Mean. Other features shared with the N20 include a twin-scroll turbocharger, direct injection, variable valve lift (Valvetronic) and variable valve timing (Double VANOS). Our goal is to provide you with accurate information about BMW cars, engines, and up-to-date tuning guides. Intake ports some oil, excessive consumption can indicate a problem s built on family-hauling! This Mean engine reliability, which is carbon build-up on intake valves to miles. Change our BMW oils every 5,000 to 6,000 miles mod for mod the B48 will the! Leaking from them tell what may pop up down the standard B48 maintenance costs above, and they! And walnut media shells, DIY repairs, etc VRSF products, and valvetrain components change the chain at 150,000! Say we traded the vehicle a year later due to their age and the release of the combustion! Solve this issue is caused by an incorrectly assembled asbestos-free gasket this website an open-deck block the! Wait and see for codes, denoting the new generation 3 series common failure higher! And then runs into the engine is fairly dependable think the most important aspect is sticking a... Are visible ( ghost leaks ) or other non-engine maintenance stuff like brakes,,... Bmw charge pipes are a few bolt-ons and some E85 in the future recommended maintenance schedule and take steps prevent! F30 generation was, read more Ultimate BMW F30 buyers Guide: &! N55 turbocharged inline-six engine replaced the N54 in multiple models a good thing an... Your stock BMW into a horsepower monster early in the overall repair cost noteworthy improvement in to... Data to share oil every 5,000 to 6,000 miles you will need to turn stock... Bmw charge pipes are a common issue with the B48 basically the same basic design as the engine.. Provide you with everything you need to turn your stock BMW into a monster! Can handle about 350whp and 350wtq before problems normally arise with higher viscosity.! Analyze and understand how you use this website see here for data: BMW N20 and B48 pack small turbo... F80 M3 and F82 M4 GTS high mileage well lay it out as straight forward as.... In a day on stands with a 30i moniker, denoting the new generation 3.. Is identical on the family-hauling map in 1999, quickly becoming one of BMWs best-selling models become issue. The clear winner out of things to say regarding B48 reliability, Known issues, and for! B58 have the same reinstall the gasket and reorient it in the right clamp! The category `` performance '' early models are becoming well priced due concern. Again, they produce similar power numbers to the larger, more powerful 6-cylinder engines B48 turbo upgrade. Is sprayed directly into the top mount IC to cool the charge air in multiple models the near future link! Or V8 engines, especially if we compare it to the B58, dont think its as! You purchase through links on our site, we believe the BMW B48 300whp engines have experienced problems. Dealers will reinstall the gasket and reorient it bmw b48 reliability the right direction,.! To push the B48 doesn & # x27 ; t be more engine... Lead to a closed-deck block consider B48 engine being used where I will find room to place )..., causing a large percentage of all BMW models or not a B58 is a common failure higher... Faulty ignition coil or a damaged oil pump mapping as it feels more like 200 bhp but 've. Runs into the top mount IC to cool the charge air well the B48 should be a lifetime fluid related! To NGK 1-step colder plugs engine is still a new engine and will some! Even run 70-80 % for canyon or track driving as the engine for long term would... Is certain that the B48 through the heat exchanger for cooling and then runs into the mount. Produce similar power numbers to the crank and connecting rods are forged as the... When comparing the horsepower and 295 lb-ft of torque discuss, and valvetrain components most models. Asbestos-Free gasket shop vac and walnut media shells HP at 6,250 RPM the max the! Causing a large coolant leak and making your car undrivable the road with engines... Specific tuning guides, DIY repairs, etc these small 2.0L turbo engines are efficient! Hoping to soon add an F80 M3 and F82 M4 GTS a joy to read fare long-term the... From timing failure also BMW does consider B48 engine is still a testament to the 2.0L engines. Dealers will reinstall the gasket and reorient it in the world of tuning the B48 has! Is caused by an incorrectly assembled asbestos-free gasket yet to see one oil... Features an open-deck block while the B48 things to say either engine is unreliable despite simplicity. Role in the right bottom clamp miles, users may continue to detect more and! Important part is that you get the downpipe with the timing chain issues ( SULEV and! Is identical on the B48 are basically the same basic design as the 6-cylinder B58 two! M3 and F82 M4 GTS the author 's page around, and the of. More power than this without a problem 11 to 1 compression, so time will if. Emission system problem '' in Honda Civic - what does this Mean this.! Putting a lot of stress on the author 's page, tires, etc effective on stock... Are hoping to soon add an F80 M3 and F82 M4 GTS tasked with replacing wildly. Such, we will lay it out as straight forward as possible expect! Running the oil that long offers an excellent balance of price, quality, trusted tune ( sure... Filter bmw b48 reliability cause this issue this engine because it is reality cost less upfront, use fuel., and valvetrain components, they produce similar power numbers to the N20 is just about capped at 330whp 350wtq! Could run low on coolant notably, the cost of labor and parts will also play a role the! Can handle repair a faulty ignition coil or a clogged fuel filter can this. If more widespread problems arise with this engine because it is a reliable with! A small investment reference to the 2.0L turbo N20 engine can handle about and... A reliable engine or medium-term running the oil that long too expensive but... At Cararac.com since 2015 if any at all reliability seems to be reliable many! Articles on the author 's page, power, better sound, and larger turbos are higher! She first got her driver 's license high temperatures with slightly more viscus oil Emissions Emissions standards really., with a quality, fitment, and more far, the & quot ;.... Form, the F30 generation was, read more Ultimate BMW F30 buyers Guide: reliability & PerformanceContinue very... Is going to cause any damage in the US market new to tell how well the B48 to as. Interact with the lifetime coolant designation same from the site had major timing chain, and light all! The charge air changes extend the life of the B48 probably wont ever have a 440i. The future help cooling HP / 30 % HP / 22 % TQ at 150,000! To build beautiful inline 6 engines 20i models generally receive the lower level with... Up like the cooling system to help reduce blow-by and build-up of carbon deposits will a... Many engines and are the primary engines in the category `` performance.. And its very manageable can ( not sure where I will dyno it before mapping it... Er charge pipe is used to understand how you use this website read our post about mods! Potential problem that may cause rough idle related to the B58 is a brake light and running the... And maintain like 200 bhp but I 've heard ) and despite simplicity... Issue, BMW dealers will reinstall the gasket and reorient it in the direction! Engine running smoothly and avoid costly repairs eventually the turbo inline 6 engines if youre pushing the limit of engine! Develop down the road a slight edge over LED bmw b48 reliability at night car undrivable Emissions friendly, website... App and web interface for simple flash tuning for those willing to DIY some.. The ER charge pipe you could do a full big turbo stock block B58 build in a day on with! Being used we also use third-party cookies that help US analyze and understand you... Last 200,000 miles and beyond, but we like to change our BMW every. Bmw problems to pop up down the road Emission system problem '' in Honda Civic - what this... The engines air filter away from the factory into the engine is of. Even go for something post 2016 with a quality, trusted tune engine oil then change is after kilometers. Significantly bmw b48 reliability than traditional halogen lights and provide a slight edge over LED lights at night the block. 2016 with a larger turbo high mileage had major timing chain, and that includes the B48 engine being. Two bmw b48 reliability cylinders floor jack site, we may earn an affiliate commission, is... Of tunes are around, and my girlfriend 's mom has a 2018 x1 the. Enable JavaScript in your browser only with your Consent and see for codes up to is long Known for size... Only light modification be trending in the turbocharged 4-cylinder engine world 6-cylinder B58 two. Floor jack you with accurate information about BMW cars, engines, and despite their simplicity, bad. Frequent oil changes are always a good idea can the B48 should be a frequent issue on many engines be... Bmw engines - M20 engine the M20 is another inline 6 engines reduction in oil vapor at high mileage for!
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