The BMW N55 Engine
The BMW N55 engine is a 3.0 liter, inline-6, turbocharged gasoline engine that was produced from 2009 to 2016. It was used in a variety of BMW models, including the 1 Series, 3 Series, 5 Series, 6 Series, and X3.
Specifications
- Displacement: 2,979 cc
- Bore: 84 mm
- Stroke: 89.6 mm
- Compression ratio: 10.2:1
- Power output: 306 hp (228 kW) at 5800 rpm
- Torque output: 300 lb-ft (407 Nm) at 1200-5000 rpm
Design
The N55 engine is based on the N54 engine, which was used in BMW models from 2006 to 2012. However, the N55 engine features a number of improvements over the N54, including:
- A new turbocharger design that provides more boost at lower engine speeds
- A new direct injection system that improves fuel efficiency and performance
- A new variable valve timing system that optimizes engine performance at all speeds
Performance
The N55 engine offers excellent performance, with a 0-60 mph time of around 5 seconds in most BMW models. It is also very fuel efficient, with EPA highway ratings of up to 30 mpg.
Reliability
The N55 engine is generally considered to be a reliable engine. However, it is important to note that all engines can experience problems, and the N55 is no exception. Some of the most common problems with the N55 engine include:
- Turbocharger failure
- Fuel injector failure
- Variable valve timing system failure
Conclusion
The BMW N55 engine is a powerful, efficient, and reliable engine. It is a great choice for anyone looking for a high-performance BMW.
