A8L W12 (D4) jerking under sudden acceleration

[horrgakx]

I've had all of the engine and gearbox mounts / bushes replaced now. Hopefully this draws a line under the problem, it certainly seems to be better but I can't help being tentative Anyway, here are the photos of one of the engine mounts and one of the gearbox mounts, both have been destroyed and have separated into two parts.

Thanks everyone who contributed for your help.

 

[GlynH]

Reminds me a bit of my crankshaft pulleys where the torsional vibration damper is literally ripped apart;

First one replaced 21/6/2021 (pulley cost £300+)


And that one was replaced 3/3/2025 (pulley cost now rocketed to £800+)


The genuine Audi replacement pulley lasted 40k miles before that too shit itself but no comeback on Audi as only a 2-year parts warranty

Is your W12 sorted now @horrgakx ?

-=Glyn=-

 

[horrgakx]

Crikey!

The car seems to be good mechanically now, next job is to replace a couple of lambda sensors in the manifold, and I need to change the gearbox oil (so may as well do the engine oil and spark plugs too).