I test drove 10 used 4x4's from main dealers in the last 2 weeks. In all cases, I rang ahead to let them know I was coming, so they had time to prepare. 4 of them failed to start and replacement batteries did not always work. 2 of those which we eventually managed to jump start showed symtoms of electrical issues with warning lights coming on during the test drive. One which did start first time had an unusual sound from the engine and was about 4K Km overdue for a service. One was sitting in the used car lot for 6 mths and was very dusty and had bird droppings on the bonnett. Another had it's handbrake stuck or frozen and had to be jerked forward to release it. Another was so badly treated by the previous owner that I did not even take it for a drive. I must stress that all of these cars were at Main Dealers - not Back Street Traders. Anyone else had similar experience.