How to solve the high fuel consumption of an old Audi Q5?
1 Answers
Excessive engine carbon deposits are a significant cause, primarily due to the use of inappropriate fuel. It is recommended to go to a 4S shop for carbon cleaning. The oxygen sensor mainly monitors the air-fuel ratio of the engine. If it is damaged, it will increase fuel consumption, so it is advisable to replace it with a new one. During vehicle use, the oil filter, air filter, and fuel filter must be replaced regularly.