Sincere Mototor is the purchase and sale of used or pre-owned cars is the business of used car dealerships. They either buy cars at auctions, from owners who trade in their old cars, or from those who just walk into their stores looking to sell their old cars. Older cars depreciate in value when newer models enter the market. Additionally, the owner of the car would undoubtedly spend more money than they did when they first bought it due to routine maintenance and repairs on a vehicle’s wear and tear.