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Why is the startup sound of BMW 1 Series so loud?

1 Answers

VanRowan

07/30/25 7:23am

The phenomenon of a very loud startup sound in the BMW 1 Series occurs because, after the car has been parked for a long time, the engine oil slowly returns to the bottom of the oil pan. This results in insufficient lubrication in the upper part of the engine during startup, leading to the loud startup sound. Below is more information about the BMW 1 Series: 1. The BMW 1 Series is a model series from BMW, with the revamped version making its first appearance at the Geneva Motor Show in 2015. 2. The new BMW 1 Series integrates sporty elements into every detail of its design, inheriting the characteristics of BMW cars and perfectly showcasing the functionality of the hatchback model and BMW's typical driving performance. 3. The BMW 1 Series is a compact luxury car, equipped with five genuine leather seats. Its top speed varies depending on the powertrain configuration, reaching up to 213 km/h, demonstrating outstanding performance.

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