After picking the car up from a dealer this Saturday It's been nothing but a living nightmare. It's 02 plate S3 with the BAM engine on 93k. I smelt the coolant reservoir today and it smells strongly like gasoline, no coolant smell to it at all. I've also got mayo on the filler cap and also on the dipstick when I pull it out, also it's misfiring badly on full throttle, oh and also it's sometimes a pain to start which is indicating to me that the plugs are wet. Have I literally spelt out head gasket failure? I'm going to give the dealer a call tomorrow, do I have a leg to stand on? What's the best way to put it to him that It needs fixing by him or I want my money back?