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Audi A3 2.0 TDI knocking

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July 7, 20232 yr

Audi A3 2014 2.0TDI.

Floored in Sport mode on motorway, all up to temp.

Suddenly car started vibrating/juddering and now making this noise.

Any idea what it might be? Knocking follows rpms.

Thanks

July 7, 20232 yr

I'd recommend a diagnostic check to see if any fault codes flag up. The knocking in my case on my old a6 is the crankshaft. Hopefully yours won't be that bad.

July 8, 20232 yr

Author

Scanned car with obdeleven, no codes stored. Knocking does seem to dissapear while off the throttle coasting.

This makes me think it might be bad injector as car felt like down on power a bit and mpg were lower than usual.

Will update if I find the issue.

July 13, 20232 yr

Please keep us posted. If it were an injector you'd think it would throw up a code.

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Help with some issues
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Audi A3 2.0 TDI knocking

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Topics

Help with some issues

Are S5's notorious for not being serviced?

Wing mirrors don't fold out when unlocking the car.

Park My A3 without having brakes on

A3 uncommanded engine shutdown

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