I wouldn't be concerned about the mileage, but the age of the car will present a number of wear and tear issues. Old diesels are generally more expensive to maintain than petrols, as things like the DPF and EGR become clogged up or worn out.

This version of the Qashqai has had a number of reported problems. Many of them are related to the CVT automatic gearbox, which can cost thousands to replace. However, if the car has a fully documented service history then it may give you many more years of motoring. The 1.5 engine uses a cam belt and this should be replaced every 60,000 miles or five years (whichever comes first).

For all reported problems with the Qashqai, see: www.honestjohn.co.uk/nissan/qashqai/2007/good and www.honestjohn.co.uk/nissan/qashqaiplus2/