Your part-exchange valuation will be slightly less than what you would get if you sold your car privately or if you were buying the same vehicle. This is because the dealer will be buying your car from you to resell it, meaning they’ll incur costs for stocking and preparation. They will take these costs into account when offering you a price. Bear in mind that you may get a better deal on the car you’re buying if you part-exchange with a dealer. Our valuations play back what’s in the market, and because the used-car market changes quickly, we update our valuations every day.