Re: Audi - Diesel or Petrol
My understanding is that because the Q3 sits on the "small" VAG platform (shared with the Golf, A3, TT, EOS, Leon, Octavia and others) it will use the Haldex derived - and Quattro branded - transmission.
This means that the 4wd is considered reactive - and that rear drive is decoupled - and only engaged when required. And last time I checked there was no override - IE a psuedo-centre diff lock
Or to put it another way - what is the point of a soft-roader whose 4wd drive only reacts??
The arabs rather like throwing Nissan X-Trails at sand dunes - as they are arguably the most rugged small SUV. With an electronic locking centre diff.
My view - is that you get a better package with similar size 4wd estate (all haldex) than a soft-roader. (Fuel economy is related to the aerodynamic co-efficient and the square of the frontal area).
And for most ski-resorts - you are better off making sure you have really top quality winter tyres than 4wd. (Goodyear Blizzards POOR. Pirelli Sottozeros INCREDIBLE)