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What is the displacement of the N55 engine?

2 Answers

BarrettLee

07/24/25 6:59am

The displacement of the N55 engine is 3.0 liters, which is a 3.0-liter inline six-cylinder turbocharged engine with relatively strong power. Composition of the N55 engine: The N55 engine housing consists of the engine block, cylinder head, cylinder head cover, oil pan, and seals. The block is made of die-cast aluminum alloy, comprising the crankcase and base plate. Advantages of the N55 engine: The cylinder head of the N55 engine is a newly developed product. For the first time in a BMW six-cylinder engine, it features direct injection, an exhaust turbocharging system, and Valvetronic. The cylinder head has a compact structure and is equipped with the third-generation Valvetronic. The combination of the exhaust turbocharger, Valvetronic, and direct injection is referred to as Turbocharged Valvetronic Direct Injection, which reduces CO2 emissions or fuel consumption by 3-6 percentage points. Models equipped with the N55 engine: The N55 engine is used in various BMW models such as the 135i, 335i, 535i, 640i, 740i, and Z4. This engine has also been introduced into the domestic market and can be found in imported 335i and domestically produced 535i models in the current Chinese market.

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LeahMarie

08/11/25 2:45am

As an ordinary car owner with years of driving experience, I remember the BMW N55 engine has a displacement of 3.0 liters, which was used in my previous car. It ran very smoothly, and the fuel consumption was acceptable during city cruising, around 10 liters or so. On the highway, it had plenty of power, making overtaking easy and enjoyable, thanks to its turbocharged design that delivers strong torque at low RPMs. However, maintenance requires attention, with regular oil changes to avoid carbon buildup. I usually check the fuel system myself, saving a lot of trouble. Compared to older engines, the N55 is quieter and more efficient, used in both the BMW 3 Series and 5 Series, with good durability. Overall, the 3.0-liter displacement is quite balanced, meeting performance needs without being too costly, and I highly recommend it to those who enjoy driving pleasure.

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