My engine management light kept coming on and my garage could not determine the cause but I was told it was related to electrics and performance issues but when put on the diagnosis machine it was giving a different reason each time.
My wife saw a reference to these problems on Facebook and the reason given was the new E10 petrol.
I asked my garage to drain my tank of the E10 and put E5 in instead and this was over 2 weeks ago and my car has been running fine since the change and I wanted to pass this on to anyone having the same problems I was having to see if this would help.