Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...

I have a SEAT Leon 2015. When cold there is a knocking noise coming from the engine. It sounds like it is in the area in front of the steering wheel. It's... If you have a TSI engine fitted then the ...