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Hello Darren, Lower compression on two adjacent cylinders is text book head gasket failure between those two cylinders, unless - by rare coincidence, these are the only two cylinders to suffer from poorly seating valves and/or piston/ bore wear. I haven’t looked at the video, so excuse me if I’ve missed something, but incase I haven’t, I would make the following suggestions:- Ask them to show you the removed head gasket, and carefully examine the remaining gasket between cyls. 2 and 3. Valve seals? Do they mean valve seats. If so, - not perfect? Well you wouldn’t expect them to be on an eight year old car! Have they measured the bore wear? If so, ask for the figures. Did they carry out a secondary compression test (obviously before dismantling) whereby a small quantity of oil is added to the offending cylinders to give a better indication of whether the low compression was due to bore wear or valve issues, or indeed simply a head gasket. Personally, I would not be thinking along a different engine until you have understandable answers to some of the questions. Perhaps you could keep us informed. Kind regards, Gareth.

How accurate is the My Audi app? The reason I ask is that I have just brimmed my tank, on checking the onboard fuel gauge is showing full, however the app is starting that vehicle is 96% full? I could not fit any more fuel in as I would be pouring it out onto the garage forecourt. This being the case I would ask how accurate the engine oil showing in the app is?