My car is losing power: causes and how to diagnose it

Why a car loses power and how to narrow down the cause: turbo and hoses, air flow meter, EGR, particulate filter, fuel or ignition.

Diagnose the loss of power

Frequently asked questions

What is limp mode?

A protection: the engine computer limits power when it detects a fault. It often clears after switching off and on, but the cause is still there.

What information helps diagnose it?

At what revs it happens, whether cold or warm, whether there is smoke and what colour, and the OBD codes if you have them.

AI-generated guidance. It may contain errors: confirm any important information and see a professional for anything that affects safety.

Other tools