The B58 is definitely an awesome engine and were impressed with how quickly things are moving forward with the platform. Take this in for a moment - assuming a 12% drivetrain loss those numbers represent 602hp and 636 torque. Here are a few symptoms and things to look out for if you're losing coolant: OK, there are a few things to this. It can trap heat for up to roughly 36 hours. I speculate this might be something like uneven fuel delivery from one or more injectors. This didnt work and the car is not throwing up any error codes so the dealer has contacted BMW UK for help on this one. The N55 has proven to be a reliable engine but is edged out by the B58. I took my car to the dealership, they did pressure system check, but they didnt find any leaks. Minor leaks may not produce enough smoke to notice. The TU1 update is mostly intended to improve emissions. Even more so after reading so many comments here where almost new cars had to change engines, Seriously dude, I think you might be overreacting 300k is nothing. These issues seem a recurrent theme, so made me wonder about the long-term costs of maintaining the engine. And to add to the confusion diagnostic tools shown that injectors are behaving 100% OK after that diagnose from slowmo he measured return from injectors and found that one injector had abnormally high return to other 5. I have a 2011 535i M Sport with 200k miles. 49 32 comments Best Add a Comment ijustbrushalot 8 mo. Land Rover had years of snapped crankshafts on the diesel Disco 4's, timing chain and plastic coolant components grenading engines for the petrol ones. Huh, B58 can make a lot of power and is the best for reliability. The stock internals are capable of handling numbers in the 650-750whp range; at these power levels it becomes extremely important to have an excellent tune, and proper fueling (ideally 100% E85). As mentioned, this shouldn't be a huge deal in most cases. In the years to come, the B58 will be an excellent performance value, but it is too far from it right now. Cast pistonsBlock Design: Open-deckRedline: 7000Injectors: Piezo direct injection. My regret (not even a problem) was that when moving from E to F, BMW matched gearboxes and diffs more closely to stock engine torques, which in my mind was a bit of step back, because you could always count on 3 things with BMW gearboxes in the past 1. they did not provided greatest feedback 2. they always had decent of headroom potential tune 3. every-time you changed gear you felt like you reloaded WW1 full caliber rifle. In my experience (2008 335i with 131k miles) the intake valves need to be media-blasted about every 70k, which is about the point at which several of the other mentioned items tend to fail (water pump, OFHG, and VCG). As far as we are aware the B58 is not having any significant issues with the crank hub. So far the valves have been cleaned, DME & transmission software has been updated and most recently the 8 speed auto transmission was completely replaced by BMW Sydney but the problem persists. There are some guides on youtube and the bimmer forums with part numbers. Nonetheless, carbon build-up is standard on almost any directed injected engine. Are both available in RWD with manual transmission? Enjoy your new B58! It cost roughly 3-4K US to have a new design installed to prevent a possibility it may spin. I have had all 3, I had a 535i e60, with the n54. Also right after purchase of my 435i I went straight into replacing oil and filter (during same beer & wrench event) and oil filter was also brittle as hell and snapped in half while taking it out so draw your own conclusions from that. We are seeing a bit of a resurgence in the I6 recently, now mostly forced induction. ps. Conclusion. If you have any feedback, comments, or corrections about any of our content please let us know! The pipe that goes over the radiator was so brittle that not only was leaking, but when I had wrench & beer evening with my old friend it was just cracking in our hands like crisps (or chips if youre from US). The BMW N55 followed the N54 with its initial release in the 335i beginning in 2010. The B58 is a marginally larger engine displacing 2,998cc compared to the N55's 2,979cc and weighs 18 lbs more, but while making notably more power. Stock Power: ~330hpWorld Record HP: 655WHPDisplacement: 2998cc (2.998L)Turbocharger: Single Twin Power TurboCompression: 11.0 to 1Bore x Stroke: 82.0mm x 94.6mm (3.23in x 3.72in)Internals: Forged crank and rods. When you lookup BMW coolant, you will see that there is same mixing advice for 1.6 non charged 80bhp mini cooper for Canada region and M3 for UAE region. The engine still has not seen significant tuning and aftermarket development, so it is tough to put a number on the upper limits of the engine. A tune and bolt-ons will take the B58 into the 400whp+ range; outstanding for a 3.0 L engine, but nothing insane compared to BMW's other inline-6 turbo engines. It . )Displacement: 2979cc (2.979L)Turbocharger: TwinPower Single TurboCompression: 10.2 to 1Bore x Stroke: 84.0mm (3.31) x 89.6mm (3.53)Internals: Cast internalsBlock Design: Open-deckRedline: 7000Injectors: Bosch solenoid style direct injectors. The butt-dyno felt no power gains. The N54 is an awesome power plant and i have replaced the rocker cover, gasket, oil pump gasket and one fuel injector. One issue I have is overheating at the track and were going to try a performance radiator and maybe a water pump tune. The N55 and B58 are similarly designed 3.0 inline-6 single turbo engines. VANOS solenoids may be considered a normal wear and tear item. The BMW B58 engine can handle around 600-650whp and 550-600wtq on the stock block and internals. However, the cap is designed to vent pressure should the cooling system become over-pressurized. Have a good holiday weekend if youre in the US. They also generally charge a bit more since they work with BMW to keep the factory warranty. . Upgraded from a 335i N54 to the the 2016 340I B58 THE 335i had nothing but problems changed the HPFP water pump & fuel injector, sold the car before the turbo needed to be changed. Ill take it up with the dealership once we are all in better times. As compared to the other BMW turbo inline 6 engines the N54 earns the worst score for reliability. https://www.bmwblog.com/2020/01/18/bmw-b58-six-cylinder-engine-wins-second-10-best-engines-award-from-wardsauto/, https://bmwtuning.co/the-4-most-common-bmw-b58-engine-problems/, https://www.youtube.com/watch?v=lbc4Hs-G9Rc, https://www.autoblog.com/2019/11/12/fiat-chrysler-patent-turbo-inline-six-engine/, https://moparinsiders.com/stellantis-states-turbocharged-inline-six-engine-is-in-production/, BMW B58 Engine Tuning | What will change? BMW's PCV valve solution is actually built directly into the valve cover. Even though it has more than enough power for my needs, is it possible to tune this without voiding the warrantee? 2015 335i 4 series coupe has been a great auto. Replacing B58 VANOS components does NOT require lifting the engine. Ok, definitely my thought process as well. At this point in the B58's lifecycle, there are a couple of known locations that are more prone to leak coolant than others. perhaps look for a used Audi 4 wheel drive convertible. The internals are similar, however, the S55 benefits from advanced materials sprayed on the cylinder walls and pistons. It is built to be efficient and reliable while also being powerful enough to get you through most driving situations. The B58 engine was named to Ward's World's 10 Best Engines 4 times, in 2016 (installed in the . *Picture is from an N54 that had a leaking VCG for nearly 20,000 miles. But sometimes, my engine just doesnt want to start. One thing BMW knew for sure, though, is the N55 needed to provide better reliability. We also think the B58 should hold up a bit better as it ages. You can say we are somewhat N54 fanatics. The rough idle is a symptom of the VANOS solenoid. N55 water pumps are notorious for their low lifespan. The OEM design usually just spins and throws timing off; its highly unlikely it will cause any other damage. Open-deck blocks and cast pistons are not great at handling extreme boost pressures for long periods of time. Thanks. Scotland to be precise. If you get a downpipe and aftermarket tune youll definitely want to remove the cold start function. In normal condition like drawing to grocery and not even touching accelerator, you will never see this happening, but when doing hard acceleration because you want to get out of dodge, negotiate out of slip road and you need to rapidly gain 40mph, just having fun Still, every rig that Ive run on emission testing by rule of thumb if there was more than 75 bhp / litre of displacement we would just run it on pure glycol you know, when you try to plot efficiency map on low charged 2 litre diesel (or god forbid DV4/ DV5 /DV6 engines) it makes no point, but if you start playing with something like 2 litre & 200 bph, then local boiling does happen all the time on long pulls with 50/50. In terms of engine and chassis design, BMW is still one of. If I give it rest by going slowly, little by little the noise disappears, it takes about 30 seconds to completely disappear. Smoke from the valve cover area is common if the leak is bad enough. Considered my car is stage 1 tuned. This isn't absolutely necessary but will help get any possible filter debris out of the oil. BMW B58 Reliability. Thanks! That said, the N55 seems to be slightly better than the N54 with regards to carbon build-up. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. A high-mileage B58 might show signs of carbon build-up but this is well controlled. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. Im impressed to say the least. Thank you for the comment. This helps with the length of the connector cable. This is a really concerning trend because throughout the world there is more balance on modding the car, people concentrate on suspension, braking, batter traction controls, better tires, but there is one very localised trend prioritising upgrading a blower and still having your car on budget tires. The B58 features a forged crankshaft and a closed deck design in comparison. This can result in oil-rich gasses being pumped into the intake manifold. Just a question of how the other internals fare. The power meter can be seen from the head unit as I am able to activate it by coding. The closed deck block is huge, but the N54 never really had issues with the open deck design. I bought it at about 75k. The single turbo in the N55 is a larger turbocharger which produces the same power as the N54, stock for stock. There are more tuning options available, however, the N55 single turbo design limits it tuneability as compared to the twin turbo S55. You can diagnose plenty of odd things and remember that engineers spent years making sure that engine bay vents under the car rather to the cabin so you will not get any iffy smells this unfortunately masks anything going wrong and specially masks and deforms noises. Ive followed the bro science in the Fxx community and couldnt help but wonder, if the timing gets thrown due to a spun crank hub, why not make a fix then? Soooo if you have some noise under load best record it from engine bay. e90 200k miles. Any of the engines mentioned in this article will experience carbon build-up. It's a pretty labor-intensive job. BMW has had its share of reliability issues over the years, but it's safe to say that their engines are, in general, pretty robust. Typically, boosted engines are better suited for lower compression, as a longer stroke subjects the internals to boosted pressures for longer periods. Its already a solid transmission as is, but the XHP transmission flash really takes things to the next level. B58 is obviously a winner. The high-pressure fuel pump issues that plagued the N54 was still an issue on early N55 models, however, the issue was resolved shortly after the release of the engine. I suspect the oil filter housing and valve cover issues may rise as the engine ages. Should I continue looking for a used BMW or However, it's worth monitoring as the B58 ages. According to my best measure it is about 250ml/1000 Km. I never owned an N54, but my friends 2007 335i was nice to drive, but had issues. Bit of methanol injection will help keep your intake valves cleaner. Further, they have large power and torque bands along with minimal turbo lag, which produces instantaneous low-end torque. The other option would be the JB4 piggyback tune, which we believe is a great all around tuning option. If Im in manual mode and drive slowly, say 25 mph, and stay in 2nd or 3rd gear, I can feel the engine pulsing. F11 151k miles (now only tuned by 30%, in the past was tuned onev 40%) The crank hub on the S55 is similar to the one on the N54, which has not known to be a common issue at all. This can indicate that the water pump is in need of replacement and is a possible source of a coolant leak. And thats the N54 which is regarded as one of the less reliable BMW engines. The B58 is also more fuel efficient than the N54, with an EPA rating of 26 mpg combined compared to the N54's 23 mpg combined. Totally agree. Although the B58 uses similar rubber VCG's, the engine has one advantage. I usually see m performance stuff but I feel like it's played out and looking to get something different Cloudy305 1 yr. ago So please stop sawing the disinformation about bad bmw reliability, that typically is hallmark of Fix Or Repair Daily shitboxes. Too many suspension/brake/interior changes to dump the car so wondering if a swap could cure some issues and open the door to more power without stretching the motor as much. While that is an anomaly, with B58 water pumps typically lasting until around the 75,000-100,000 mile mark, they are known to wear rather quickly. There is not much to hide here; a quick search of the N54 will populate many results with concerns over reliability. ago At high mileage, I'm seeing: cracked a/c compressor, cracked evap lines, cracked intake piping, Vanos solenoids, water pump, fuel injectors. Replace the accessory belt every 80,000 miles. Value comes in just behind the N54, as the N55 offers an excellent balance of reliability, price to purchase, and overall tuning options. Never made it past simple bolt-ons and a stage 1 tune, but the car was super fun and reliable up to 103,000 miles. Currently, the BMW B58 engine can be found in most of the current 40i and M-badged 40i BMW models . With that being said, there are some shared issues between the three engines, like VANOS solenoid failure and oil filter issues. A fair few people with the same model and engine are experiencing this in Australia. Im not sure how many as I was never given any job sheets. Im not convinced there isnt a secondary issue. I have a 2011 335 x drive manual that I love. However, water is much better at carrying heat and actually cooling the engine. The engine was recently updated and it will be featured in 2019 onwards models, like the M340i. We may receive a commission for purchases made through these links. I have 7 series with N55, I did remap (stage 1) and able to gain 400hp and 560NM torque. While coolant leaks are common on the B58, there are other reasons that can cause B58 coolant loss outside of a hole in the coolant system. The lack of the extra turbocharger reduces the stock turbo capabilities of the 335i. Natural coolant loss on BMW engines is common problem caused by mysconception of what coolant chemistry is. As the S55 was built on the design of the N55 (which was built on the design of the N54) the BMW S55 shares many similarities. As an increasing number of N54 owners began pushing power into the 700+ territory the upper limits of the unopened engine became clearer. 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