TrueCar - Buying a car can be painful.
NADAguides Car Pricing - Estimates the value of a used car.
CarCatch.uk - Find new and used cars for sale in the UK with CarCatch, an aggregator of all the top auto marketplaces
Abyso - Abyso - Locally listing.
Kelley Blue Book - New & Used Car Price Values
Autotrader - Find used cars for sale at AutoTrader.com. With over 3.