How often does the BMW 5 Series throttle have to be cleaned?

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The throttle of BMW 5 Series is cleaned every 20,000-40,000 km. Throttle is a controllable valve that controls air to enter the engine. After the gas enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion will be successful. In terms of power, the BMW 5 Series is equipped with a 2.0T turbocharged engine with a maximum horsepower 184 HP and a maximum power 135 kW, matching an 8-speed automatic manual transmission. The length, width and height of BMW 5 Series are 5 106mm, 1868mm and 1500mm respectively, and the wheelbase is 3105 mm. In terms of suspension, the front suspension type of this car is double wishbone independent suspension, and the rear suspension type is multi-link independent suspension.