What fuel do you guys put in your RS models ? ... my son has just bought a '21 RS 5 and the fuel flap lists E5 and E10 but I think he'd be better off putting E5 in it.
Just joined but haven't bought my Audi yet ... I bought an A1 for my granddaughter just before Christmas and my son is currently buying an RS5, so I thought I'd join the club. I run a 911 Turbo and a CL500, and I'm considering a fast Audi to replace the Mercedes.