The 335i with stock turbos is capable of making upwards and beyond 500 horsepower at the crank. However, the N54 vs N55 is an important subject here. BMW N54 engines with factory twin turbos are generally more capable. The N54 can make upwards of 500whp on stock turbos while the N55 maxes out around 425whp.
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Is the BMW 335i engine reliable?
The BMW 335i enjoys below-average reliability, with some of its model years scoring better than others. RepairPal gave it a rating of 2.0 out of 5.0, ranking it 28th out of 31 for luxury midsize cars in its category.
How much HP does a Stage 1 tune add 335i?
On the Stage 1 map, that increased to 345 ft lbs of torque, and 284 hp, which is a lot for just a re-flash of the ECU. It is worth mentioning that those results were on the Cobb 93 octane map, but we were running 91 octane in the car because that is the highest octane rating that we have access to here in Colorado.
Is the BMW 335i N54 reliable?
The N54 is cheap and fast, but not reliable. 2JZ engines are fast and reliable, but they aren’t cheap to buy upfront. That said, the N54 earns its bad reliability reputation from all of the crappy parts around the engine. The N54 itself is a very strong engine that can often last beyond 200,000 miles.
Which year 335i is most reliable?
Reliable BMW 335i Model Years Here’s a quick list of the most reliable BMW 335i years: 2010. 2012. 2015.
Are BMW 335i expensive to maintain?
The annual maintenance cost of a BMW 335i is $1,030. Repair and maintenance costs vary depending on age, mileage, location and shop.
How much does it cost to tune a BMW 335i?
The average cost for BMW 335i Engine Tune-Up is $331.
Which is better N54 or N55?
N55 Reliability: Which Engine is More Reliable? This is always a touchy subject when it comes to discussions about the N54 and N55. Simply put, the N55 is more reliable. BMW’s N54 was the first mass production turbocharged gasoline engine produced by BMW in decades.
What car can beat a BMW 335i?
One competitor that beats the 335i E90 is the 2006 Infiniti M45 V8 Sport, which can hit 60 mph from a standstill in just 5.3 seconds. Other rivals that can just about beat the E90 include: 2006 Subaru Impreza WRX STI Type UK – Hawkeye – 5.3 seconds. 2009 Ford Taurus SHO 3.5 V6 – 5.3 seconds.
Is BMW 335i a sports car?
This is another interesting talking point, and major difference between the E90 and F30 335i. Overall, both cars handle well. They’re not track stars straight from the factory. However, they’re both fun, sporty cars.
How long do N54 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.
Why is the N54 engine so good?
The biggest advantage of the BMW N54 is its power and potential. Sure, the twin-turbocharged petrol engine provides enough power as it is. Still, what truly makes it special is the ability to boost the output even more with a couple of aftermarket upgrades.
How can I make my BMW 335i more reliable?

How many miles will a BMW 335i last?
While a BMW 3 Series can last 200,000-250,000 miles, there are many cases where 3 Series models have been driven more than 300,000 miles with no serious mechanical issues.
What is the most reliable BMW?
- 8/10 2002 BMW 318i.
- 7/10 2008 BMW 750i.
- 6/10 2012 BMW Z4.
- 5/10 2016 BMW M4.
- 4/10 2005 BMW 325i.
- 3/10 2019 BMW F40.
- 2/10 2018 BMW i3.
- 1/10 2006 BMW E90 330i.
Is BMW 335i Twin Turbo?
Consequently, the 330i sedan is gone for 2007, replaced by the 335i sedan with the same 300-hp twin-turbocharged engine that powers the 335i coupe. The naturally aspirated 3.0-liter six will live on in the 230-hp 328i coupe and sedan, which replace the 325i models.
Is Audi or BMW more expensive to maintain?
Audi’s numbers are better, but still pretty embarrassing. In their first 10 years of ownership, the average Audi costs its owner $12,400 in maintenance. Only Volvo, Cadillac, Mercedes and BMWs cost more to keep on the road. Remember, these numbers include the labor of the service, but also the cost of the parts.
Do BMWs need alot of maintenance?
BMWs cost a lot to maintain According to Your Mechanic, BMWs are easily the most expensive car brand to maintain. It’s not even a close contest. BMW is in first place, with an average maintenance cost over 10 years of $17,800. In second place was Mercedes-Benz, which had an average 10-year maintenance cost of $12,900.
Are used BMW reliable?
Many experienced owners and mechanics will tell you to stay far away from used BMWs, especially ones from the last 20 years, or so. They are simply not worth the money you will no doubt have to pour into them. They break easily, the parts are expensive, and the labor costs are astronomical.
How do I know if I have a N54 or N55?
starting from March -2010 all cars were N55 drivetrains. Probably the best way to tell without looking under the hood… is IF it has a DCT it is an N55. IF its an auto it is an N54. IF its a 6MT… you’ll have to look under the hood.
How much HP can N54 handle?
The N54 can handle around 600-650whp and 550-600wtq on the stock block and internals.
How much HP does a Catless downpipe add N54?
N54 Catless Downpipes Performance Benefits +15-25 Horsepower and Torque. Incredible turbo spool. Intoxicating Sound.
What is the most reliable BMW engine?
- BMW B58 Engine.
- BMW M20 Engine.
- BMW M50 Engine.
- BMW S62 Engine.
- BMW N52 Engine.
- BMW M54 Engine.
Why do BMW turbos fail?
The main cause of turbocharger failure is oil-related โ 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.)
Why is the N55 more reliable than N54?
The main difference is the exhaust. The new N55 engine has one exhaust pipe the feeds from all 6 cylinder (for less fuel consumption) while the N54 had 2 pipes, one feeding from cylinders 1, 2, and 3 and another pipe feeding from cylinders 4, 5, and 6.