The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo. The N55 was BMW's first straight-six engine to use a twin-scroll turbocharger. It also won three straight Ward's 10 Best Engines awards in 2011–2013. [1]

Jan 7, 2023 · In this ultimate guide, we cover the 3.0L turbocharged inline 6 BMW N55 engine. Learn about N55 specs, modifications, and reliability.

Dec 12, 2023 · The N55 engine is a 3.0-liter inline-six turbocharged engine that produces from 300 horsepower to 445 horsepower in ALPINA models.

Mar 28, 2025 · The N55 was a staple in BMW's engine lineup for over ten years with several different variations. Read along to see how the turbocharged engines tick.

Mar 27, 2025 · BMW X5 xDrive35i (F15) Each of these models leverages the N55 engine’s capabilities, providing a thrilling driving experience while maintaining a level of practicality. The engine’s smooth power delivery and robust torque make it suitable for both spirited driving and everyday commutes. Performance and Tuning Potential

Oct 12, 2022 · I'm in the market for a second or third gen X5 and am leaning towards the Xdrive35i models. How's the reliability and what are the common problems? My budget is $20-35k. N55 is pretty reliable. You should be okay. Just keep a few dollars aside for little things that you should normally prepare for on any other vehicle aswell.

Sep 16, 2010 · BMW installs the new N55 single-turbo inline-six in the X5 sport-utility vehicle. Read a review of the turbocharged SUV, get all the details, and see photos at Car and Driver.

Feb 27, 2020 · What is the BMW N55? The BMW N55 is a 3.0L inline 6 turbocharged, direct-injected gasoline engine produced from 2009-2019. BMW’s N55 engine succeeded the N54 engine, but moved to a single-turbo design as opposed to the twin-turbo N54. The N55 also followed the N54’s footsteps winning 3 straight Ward’s 10 Best Engines awards.

Feb 25, 2025 · The N55 engine produces up to 335 hp and 332 lb-ft of torque, as confirmed by BMW USA and various automotive publications such as Car and Driver. Independent tests conducted by MotorTrend have validated the 0-60 mph times of approximately 5.0 seconds for models like the 335i and 135i.

Feb 19, 2018 · One thing I’ve been wondering is why the N55 in the F15 and F16 makes lower HP and Torque than in other current BMWs with the “same” engine? Are the engines the same, the tune is just different? If so, with an aftermarket tune, is the potential the same?