I am thinking about buying a 2008 pre-owned Passion with 15,000 on it. When I took it for a test drive, it would not back up when put in reverse. The salesman (not a smart car dealer) would shut the car off and restarted it. When he did this it would back up. This happened several times before it seemed to work OK. He said he was going to take it to a MB dealer, who did not also have a smart dealership, and have it checked out. Is this something normal or should I steer clear of this particular smart car? Thank you.