Okay, so a quick update. I've done around 1,000 miles so far - on a 500 mile return trip to Southampton at between 60 and 70 I managed to average 40MPG. Quite impressed! Did the return trip on just a smidge over one tank. I went through the history, which was surprising - all VVT work has been done, the oil restrictor mod has been done, it's had a recon turbo not so long ago... and has a Versatune upgrade installed with a 'medium' map. That explains a lot! Also seems to have a stainless exhaust. It's riding too low, so it's either had lowering springs fitted or has lost a coil or two. Luckily Amazon had one set of OE Eibach Aero springs for £98 left... Can't get the blimmin' thing on the drive until I fit those. Also, a nasty rattle from the front suspension - I'm thinking ball joint or drop link. We'll see when it stops raining... In short - yes, tax is a nightmare but it's absolutely worth it. Lovely little car. Just had a Grom BT3 unit delivered to add Bluetooth to the OE stereo. It's a good Bose system, so worth keeping OE for now.