Why does the BMW X3 make a lot of noise when driving?
1 Answers
The loud startup sound 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 a louder sound. Another reason is that one of the BMW's dual exhaust pipes is equipped with a valve that remains closed at low speeds, leading to higher idle speed and louder noise during startup. This is a normal phenomenon, and the sound will diminish after a dozen seconds. Here is some relevant information: 1. Powertrain: The X3 offers three power options for its 2.0T engine: low, standard, and high power. 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 a standard all-wheel-drive system. The BMW X3 features a front double-joint spring strut suspension and a rear multi-link independent suspension, equipped with an intelligent all-wheel-drive system. The central differential is a multi-plate clutch type, and it uses a unibody structure. 2. System Configuration: Although the BMW X3 xDrive25i Luxury Package is the entry-level configuration, it is by no means 'basic' in terms of active and passive safety features. The vehicle is equipped with five airbags, a tire pressure monitoring system, an active braking system, a road traffic sign recognition system, a fatigue driving alert system, front and rear parking radars, a rearview camera, and an automatic anti-glare function for the interior rearview mirror.
