How often does the BMW x 1 throttle have to be cleaned?

BMW x 1 Throttle is cleaned every 20,000-40,000 kilometers. If it is found that the idle speed is unstable and the acceleration is not smooth, it needs to be cleaned. Throttle is a controllable valve that controls air to enter the engine. There are two kinds: traditional cable throttle and electronic throttle. Known as the throat of an automobile engine, it is connected with the air filter and the engine block. BMW x 1 is a compact suv launched by BMW. Its length, width and height are 4454mm, 1798mm and 1545mm, respectively, and its wheelbase is 2760 mm, and its driving mode is predecessor. In terms of suspension, the front suspension type of BMW x 1 is McPherson independent suspension, and the rear suspension type is multi-link independent suspension.