This car has used the same engine oil for 2 1/2 years and 19,000 miles. This implies short trips using engine oil thick with sludge and diluted with water and fuel, which doesn't get a chance to evaporate off on short trips. On top of that engine oil degenerates with time, regardless of mileage, so not a good car to buy if you intend to keep it a long time. If you only intend to keep the car for a couple of years I would ask for a decent discount plus a major service done by a franchised dealer; if you intend to keep it for many years I'd reject it and ask for a full refund.