needs servicing"? It has 100,000 miles on it, and when I asked him what he meant by needs servicing, he said it needed tires soon, and an oil change. He says the engine light is on from an O2 sensor. Should I pass? Its for a teen. Its $2200, real clean and nice. He says he drives it 40 miles a day, but that "needs servicing" scares the sh!t out of me. She has her heart set on it, should I just pass though?