Hello all, I have been a long time 'lurker', but have now decided to ask for some advice. My wife has a VW Polo 1.2e 2007 , 60ps, BBM engine. The car has done 54K miles. Was bought from a franchised dealer with 18K miles. All servicing was done by VW main dealer. To its credit the car runs smoothly. On cold mornings it may need the ignition to be turned twice to get it going. The only thing I have noticed it tends to suffer rev hang occasionally changing gears; I accused my wife of not releasing the throttle and had to apologise when I realised that its a feature of DWB. The main problem is after its last MOT, which was passed, it underwent a brake fluid change(performed by VW) and 2 days later it threw the EML. No rough idle or throttle lag. VW looked at it, noted it was running rich, reset the EML, low and behold 6 hours after that it threw the light again. VW have performed a full Diagnostic test now. They have assured me that included a full compression test. The identified an intermittent misfire due to a cam position sensor fault. Timing chain and tensioners are functioning as normal. For the privelige of replacing the cam position sender, new valve and software update we did not get any change from £250. But I figured if it solved the problem it was worth it. 50 klicks down the road the EML is on again. VW are due to look at it again. What I'd like to know is if they identify a "different" problem will I be able to offset what we have already pain against the cost? Any thoughts would be greatly appreciated.