What Causes Audi to Shake When Starting Cold?
2 Answers
Audi shaking when starting cold may be caused by: insufficient temperature inside the engine, large spark plug gaps, or aging ignition coils. The solutions include: keeping the engine warm and regularly cleaning the fuel system. Audi is a luxury car brand under Audi AG, a subsidiary of the Volkswagen Group in Germany, representing classic car models. The company is headquartered in Ingolstadt, Germany, and has subsidiaries in many countries including China. Taking the Audi A6L as an example: it is a car series developed by FAW-Volkswagen Audi based on the new A6 in Germany, with a body length, width, and height of 4915mm, 1874mm, and 1455mm respectively, and a wheelbase of 2912mm.
The most common cause of Audi's cold-start shaking is the aging of engine mounts, also known as engine mount bushings. Rubber components harden and crack over time, especially noticeable in cold weather, where you can feel the steering wheel and seats vibrating as soon as the car starts. Last time I encountered this issue, I couldn't even balance a coin on the steering wheel at idle. Additionally, aging transmission mount bushings can cause similar problems, with a noticeable 'clunk' during initial acceleration. It's recommended to focus on inspecting these rubber support components—replacing them can make the car feel brand new. For models with start-stop functionality, if shaking is accompanied by a 'click' sound during start-stop cycles, it's almost certain the engine mounts are to blame.