I had the emissions "fix" on my 2010 Audi A3 at the end of February and had nothing but problems since. Power has been altered dramatically and even to the point of cutting out on me a few times. I've had the brake pads changed and there's a knocking noise. My car has never had any problems prior to this. I've now got smoke coming from the engine and exhaust, apparently my turbo needs replacing at a cost of £1000. I haven't taken it to Audi yet as I'm worried it will be more if I take it there and they won't link it to the emissions update.