The time has come for me to get a new car and I've been thinking about the C6 chassis. I would like a Allroad but my budget does limit me on the extra I can get and the miles appears to be around the 150k mark. Coming from a A4 B5, I'm full up to date when it comes to the newer TDI and petrol engines, that also includes the gearboxes and general extras. I am doing my research but I do applogies if anything has been answered before. Engines. I've been told a couple of times and read that the 2.0PD engines (140 and 170s) tend to have issues the oil pumps as well as other bits and should be avoided. Is this something to worry about on all 2.0PD engines irrelevant of miles? There was two allroads that sparked my interest. Both was 06 plate with around 150k miles, one was 2.7TDI and the other was the 3.0TDI. There is a couple A6's with the 2.7TDI engine that has also sparked my interest but had a lot less miles. Is miles an issue or something I should be weary of when looking at the 2.7 or 3.0 TDI engines? What's the 2.0 and 2.4 petrol engines like in the C6 chassis? I am mainly looking for diesels but if the right petrol motor comes up I will be considering that as well. Apart from my general concern of miles, is there anything else with the engines that I should be checking or looking out for? Automatic Gearboxes. No idea on theses. Anything that's worth knowing? What else? I've read about the rear washer pipe leaking causing issues with some electronics and to look in the spare wheel well along with the side cubby for signs was water. Updating the infotainment firmware and the air suspension pump failing. Is there anything I should check, know or ask before venturing down C6 ownership? Thanks in advance for anything help or information.