I was offered a Nissan Acenta 1.5 diesel, seven months old, 11,600 miles at £13,900. They agreed a good price for my old Jeep, unseen. This “great deal" made me suspicious and, after further probing, the Nissan dealer admitted that the car was "Nissan Approved" but was ex-contract. Would you buy such a vehicle and if so would it blight the re-sale value further down the line?