Audi A3 check engine light and EPC indicator activated causing car to slow down on Audi A3

Some Audi A3 owners report experiencing issues when the check engine light and EPC indicator illuminate, signaling potential problems that require immediate attention for optimal performance and safety. These owners often find that reducing driving speed and avoiding high acceleration is necessary when the EPC light activates. The check engine light typically indicates emission control or engine problems, and failing to address it promptly can lead to decreased engine performance and gas mileage. Additionally, the EPC light may point to issues with the drive-by-wire system, particularly the throttle, which can impact engine efficiency and safety. If these warning lights persist despite initial precautions, owners may need to use a diagnostic tool to identify the underlying issues, emphasizing the importance of timely resolution to maintain the vehicle's performance and safety.