Why is the BMW X3's startup sound so loud?

1 Answers
StAlina
07/29/25 3:38pm
Startup sound loudness is a characteristic of the BMW X3. This is because the X3's four-cylinder engine uses N20 fuel injectors and has an additional high-pressure pump inside the cylinder block, resulting in louder sounds. Another reason is that one of BMW's dual exhaust pipes is equipped with a valve that remains closed at low speeds, causing higher idle RPM and louder sounds during startup. This is a normal phenomenon, and the sound will diminish after a dozen seconds. Below is relevant information about the BMW X3: 1. In terms of power, the X3 offers three 2.0T power options: low, standard, and high. The low-power version is called 25i, the standard-power version is 28i, and the high-power version is 30i. All models come with an 8AT transmission and standard all-wheel drive system. 2. The BMW X3 features a front double-ball-joint shock-absorbing suspension and rear multi-link independent suspension, equipped with an intelligent all-wheel-drive system. The central differential is a multi-plate clutch type, and the vehicle adopts a unibody structure.
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