Poor fuel economy Audi Q5

Poor Fuel Economy in Audi Q5 (2008-2017)

Possible Causes:

1. Tire issues (pressure or alignment).
2. Faulty oxygen sensors.
3. Dirty or clogged air filter.
4. Faulty fuel injectors.
5. Malfunctioning Mass Air Flow (MAF) sensor.
6. Exhaust system issues, such as a clogged catalytic converter.
7. Engine misfire.
8. Dragging brakes.
9. Incorrect engine oil viscosity.

Repair Instructions:

• Replace or inflate tires as needed.
• Replace faulty sensors: oxygen sensors, MAF sensor.
• Clean or replace air filter.
• Clean fuel injectors if required.
• Address exhaust issues by replacing a clogged catalytic converter.
• Correct brake problems by servicing or replacing components.
• Use the correct engine oil as specified.

Final Steps:

After performing the repairs, take the car for a test drive to confirm that the fuel economy has improved. Monitor fuel consumption over a period to ensure the issue is resolved. If problems persist, consider professional diagnostics for deeper engine or transmission issues.