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What type of fuel injection system does the BMW M5 engine use?

2 Answers

VanBrielle

07/24/25 8:29pm

BMW M5 engine adopts direct injection technology, which is widely used by many engines. The fuel injector of a direct injection engine is located inside the engine cylinder, allowing for higher injection pressure and better fuel atomization. Fully atomized gasoline can mix thoroughly with air, thereby improving combustion efficiency. The dimensions of the BMW M5 F90 are 4965mm in length, 1903mm in width, and 1473mm in height, with a wheelbase of 2982mm (or 2964mm as another data point). In terms of power, it continues to use the 4.4-liter twin-turbocharged V8 engine from the F10 generation M5, which has been recalibrated to increase maximum output to 600 horsepower.

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AylaMarie

08/11/25 11:10am

The fuel injection system used in the BMW M5's engine is quite fascinating, and I particularly enjoy studying such technical details—it employs high-pressure direct injection technology. Simply put, the fuel injectors are mounted directly at the top of the cylinders, spraying gasoline straight into the combustion chamber, unlike the older intake manifold injection method. This approach offers numerous advantages, such as ensuring more uniform fuel-air mixing and more complete combustion, resulting in exceptionally sharp throttle response and an exhilarating acceleration feel, as if the car is turbocharged with adrenaline. Additionally, when paired with the twin-turbocharging system, it enhances fuel efficiency, allowing even long-distance driving to maintain reasonable fuel consumption. However, this direct injection technology does have minor drawbacks, like potential carbon buildup over time, requiring periodic use of fuel additives or injector cleaning services. Overall, BMW engineers have struck an impressive balance between sporty performance and everyday practicality with this design in the M5—it's an absolute thrill to drive.

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