My A3 has done 80,000 miles and has just started to lose coolant and occasionally misfire for a short time after a cold start. I took it to an Audi dealer who pressure tested the system and quickly diagnosed a cracked cylinder head. They've quoted £2500 for the repair. I've been in touch with Audi UK about a goodwill contribution... and they've offered to pay a whole £360 towards the repair. Big deal.

Anyone else been in this situation? Is a cracked cylinder head a common problem with this engine? Should I think about swapping the engine? Would be grateful for some advice.