St. Louis (KSDK) - The Better Business Bureau is offering advice on car sales as more people get rid of their gas guzzlers for a more fuel efficient vehicle.

The agency says sellers should always communicate face-to-face with a buyer, instead of solely through email or phone calls.  The BBB says people also need to be completely honest about a car's condition.  Maintaining records of services will help insure to buyers that a vehicle has been well cared for. 

The BBB suggests making sure a car is clean and tuned up before putting it up for sale.  And when it's time to start negotiating, the agency says to aim high and work down to a price that works for both parties.