An engine misfire may develop from one or more cylinders resulting in a loss of power and illumination of the Check Engine Light. Our technicians tell us that ignition coil failure is a common cause for this concern. On high mileage vehicles it may be wise to consider replacing all of the ignition coils if one fails to try and avoid future misfire issues on another cylinder.
Ignition Coils May Fail on Audi A3
Average mileage: 72,315 (59,600–85,000)
10 people reported this problem
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We thought it was catalytic converter, but the shop tested and one of our coil was failed. We replaced all spark plugs and one cool. This was a project we were quoted ~$500 for, but my brother in law fixed for $137 in parts from Audi and YouTube.
Engine light came on. Had to replace thermostat and all four ignition coils.
Check engine light came on, and engine just wasn't responding in terms of power. Luckily there was repair place near by. They checked the system and determined it was the coils. Had them replaced and the car is running much better.
Continuous problems since coils replaced under recall program.