Hi all, very new to the Golf world we have recently purchased a 2013 gt TDI bluemotion 2.0 convertible,autoit came up with the dreaded eml a few days ago, the start stop cuts in but stops the car completely and we have to restart it, had it plugged in today and they say it's the throttle body or pedal switch, the difference in price for the parts from the garage to the price online is huge, do you think this is the likely fault and am I safe to buy online at reduced prices, sorry for the last Ng message but unsure on best way forward