It’s pretty common knowledge that the BMW N54 and N55 Turbocharged I-6 engines run very hot. Considering that turbochargers are exhaust driven, this makes sense- they’re naturally going to be hot and accumulate a lot of heat.
What maintenance does a 335i need?
Every 10,000 miles, or yearly: replace engine oil, oil filter, and coolant. Every 20,000 miles, or every two years: inspect and replace fuel filters. Every 30,000 miles, or every three years: Replace brake fluid (after the first replacement, every 60,000 miles)
Are BMW 335i expensive to maintain?
The annual maintenance cost of a BMW 335i is $1,030.
How long do 335i turbos last?
Turbochargers on the BMW N54, for the most part, last around 100,000 miles before they have to be rebuilt or replaced. It isn’t uncommon to hear of cars that have the original turbos still functioning as designed upward of 200,000 miles.
How many miles do 335i Motors last for?
You can expect your 3 Series to last anywhere from 200,000 to 250,000 miles when properly maintained.
What year 335i is the most reliable?
- 2010.
- 2012.
- 2015.
- 2016.
What are common problems with BMW 335i?
- Noise and Vibration Due to Low Refrigerant.
- Engine Rattle.
- Broken Serpentine Belt.
- Faulty High-Pressure Fuel Pump.
- High Temperatures.
- Engine Problems.
Does BMW 335i have timing chain?
The average cost for BMW 335i Timing Chain Replacement is $997.
How much does it cost to replace turbos on BMW 335i?
BMW 335i Turbocharger Assembly Replacement Cost Estimate. The average cost for a BMW 335i turbocharger assembly replacement is between $3,725 and $5,002. Labor costs are estimated between $1,194 and $1,506 while parts are priced between $2,532 and $3,497.
Why do N54 turbos fail?
The vast majority of turbo failures are caused by oil starvation or oil contamination. The N54 turbos are supplied with engine oil and coolant to keep their high temperatures in check (Figure 1).
How do I know if my N54 turbo is bad?
- The car has noticeable power loss.
- The acceleration of the car seems slow and noisy.
- The car doesn’t easily maintain high speeds.
- There is smoke coming from the exhaust.
- There is an engine fault light on the dashboard.
How long will a 2008 BMW 335i last?
Some are known to fail around the 30k–40k mark and the repair history would reflect that. But most will easily last about 70,000 miles, and they come with a 10 year/120,000-mile warranty as well. Now you know why the warranty is so important.
How many miles will a N54 last?
The N54 can and often does last 200,000+ miles if you’re willing to spend enough money. If the repairs are done right the N54 can offer good reliability and longevity. You’ll just end up spending more money on repairs and maintenance than these 10-15+ year old cars and engines are worth.
What mileage do BMW start to break down?
Although we believe BMW’s are reliable cars there are a few primary issues that plague a vast majority of all BMW’s and BMW engines. A lot of these problems start to develop somewhere in the ballpark of 80,000-120,000 miles.
Which 335i is the fastest?
- Motiv Motorsports – 978WHP + 776TQ – E90 335i.
- The Kraken – 920WHP & 865TQ – 2007 335i.
- The Panda – 890WHP + 793TQ – 2008 BMW 335i.
- 939WHP + 862TQ – 2007 BMW 335i Sedan.
Is N54 or N55 better?
Thanks to the N54’s twin turbos and forged internals, it is the more capable engine mod-for-mod. However, the N55 has proven to be the more reliable engine. N54’s are notorious for their common problems, especially early on, but these issues are currently resolved.
Is the N54 a good engine?
The N54 has won six straight International Engine of the Year awards and three straight Ward’s 10 Best Engines awards. There is no BMW M version of the N54, however a high-output version of the N54 is used in the 1 Series M Coupe, 135iS, Z4 35iS and 335iS models.
What makes N54 unreliable?
The primary issues are the fuel injectors and the high-pressure fuel pump. Both were infamous issues at the very start of production and can still chase owners to this day.
Is a 335i fast?
The 335i sedan was sold between 2007 and 2013. It comes with an inline six-cylinder turbo powerplant with 2,979cc displacement, which offers 298 hp at 5,800 rpm and 295 lb-ft of torque at 1,200 to 5,000 rpm. It has a top speed of 155 mph, and its 0-60 mph acceleration stands at about 5.4 seconds.
How do I know if my BMW timing chain is bad?
- Rough idling: Start up your car and set out of it.
- Unusual noises: Especially when idling, but not just when idling, you may hear your engine rattle.
- Metal shavings in oil: The timing chain will wear out over time.
What years BMW timing chain Problems?
BMW Petrol Engine – Timing Chain Failure A range of BMW petrol engines in cars registered between 2001 to 2015 appear to have a design problem affecting the timing chain or tensioner. The engine timing chain is very weak – it stretches over time, and ultimately snaps.
How much does it cost to replace a BMW timing chain?
Cost at the Mechanic: $1,624 to $1,879 Your BMW timing chain should be replaced every 100,000 miles to keep your car healthy.
How much HP can a stock 335i handle?
N54 Engine Limits – Simple Answer. The N54 can handle around 600-650whp and 550-600wtq on the stock block and internals.
How many miles do turbos last?
Turbos are designed to last the lifetime of the vehicle (or around 150,000 miles); however, it’s possible for them to wear out over time depending on how hard you drive the car and the original build quality of the turbo.
Why do BMW turbos fail?
The main cause of turbocharger failure is oil-related – usually due to either lack of oil or dirty oil. Turbocharger failures in BMWs seems to be caused by the long oil service intervals. (The dealer typically recommends oil changes every 12,000-18,000 miles, depending upon when the car’s indicator says to do it.)