I recently filled up my 2021 Audi A3 with gas and noticed that the car has been running less efficiently than normal. What could be causing this issue and how can I fix it?
ReplyThe most common cause of decreased fuel efficiency after filling up is a faulty gas cap. Make sure to check and tighten the cap before driving. If that doesn't solve the problem, it could be a more serious issue such as a clogged fuel filter.
Another potential cause could be a malfunctioning oxygen sensor. This sensor monitors the amount of oxygen in your exhaust and can greatly affect the car's fuel efficiency. Have a mechanic check and replace it if needed.
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