Thanks for the Forrester info - that's what I feared but I wonder whether petrol Volvos are as thirsty.....
Regarding petrol v diesel, emissions are not relevant as my son lives in New Zealand where they don't seem to care about stuff like that. I sense that he instinctively favours petrol, but I'm not sure why. A 10 year old car in NZ is classified as "almost new" (!!), but I'm advising that a diesel engine will probably have a longer life that petrol. Maybe.
He's looking at cars with 50,000 to 90,000 miles on the clock. He loves my (much newer) XC60 and is keen to get the same.
Towing performance is important as well as fuel consumption because they tow a lot, often on gravel roads and sometimes rough ground.