Hi there.i have heard there is a problem with the accelerator pedal on these models,being fly by wire the pedal sends a signal and these corode inside.you could try one from a scrapyard for around 30 quid or 90 pounds new.does your heater plug light flash as well.in the meantime if it cuts out when you are driving you can switch off and on the ignition and it clears normally?mind and not turn the key fully off incase the steering locks..hope this helps and please let me know...