Part-Exchange Calculator
Find out how much equity you have in your current car. Enter the part-exchange value offered and any outstanding finance to see whether you have equity to use as a deposit or negative equity that needs to be covered.
Frequently asked questions
What is a part-exchange?
A part-exchange (part-ex) is when you trade in your current car at a dealer and its value is deducted from the price of your new car. If you have outstanding finance, the dealer settles it and deducts the settlement figure from the trade-in value.
Can I part-exchange a car with outstanding finance?
Yes. The dealer will settle the outstanding finance on your behalf. If the part-exchange value exceeds the settlement figure, you have equity to use as a deposit. If not, the negative equity is usually added to your new finance agreement.
How do I get the best part-exchange value?
Get multiple valuations from online buyers (Motorway, WBAC, Cazoo) before visiting a dealer. Present the car clean and in good condition. Having a full service history and two keys increases the value. Use online valuations as leverage in negotiations.
Is part-exchange or private sale better?
Private sale almost always achieves a higher price. However, part-exchange is simpler — the dealer handles everything including settling existing finance. The convenience premium is typically £500–£2,000 depending on the car.
These calculations are estimates based on 2026/27 HMRC and DVLA rates. Speak to a lender or qualified financial adviser for a personalised quote.