Part exchange vs selling privately: what the numbers show
Selling privately usually gets you more money. Part-exchange is quicker and easier. The question is how big the gap is for your car, and whether it's worth the time. This guide uses typical asking prices from more than 93,000 UK adverts in the Valu8 database (November 2026) to show where the gap is biggest.
For the step-by-step pros and cons, see our guide to part-exchange vs private sale.
Private and dealer adverts are priced very differently
For the same model, year and mileage band, private adverts were typically about 30% below dealer adverts. The gap depends a lot on the price of the car.
| Dealer asking price | Private adverts typically |
|---|---|
| Under £5,000 | about 39% lower |
| £5,000 to £10,000 | about 28% lower |
| Over £10,000 | about 12% lower |
Some examples, all from UK adverts in November 2026:
| Car | Private seller median | Dealer median |
|---|---|---|
| 2016 Ford Fiesta | £3,200 | £5,600 |
| 2017 Volkswagen Golf | £7,250 | £9,000 |
| 2016 Nissan Qashqai | £4,250 | £5,700 |
Private cars on sale also tend to be older and higher mileage. In our data, private adverts had a typical mileage of about 103,000 miles against about 65,000 for dealer adverts, with an average age of about 13 years against about 8.
Why dealers charge more
A dealer's price usually covers preparation, any repairs, a warranty, finance options and the extra consumer rights a buyer gets from a business. The dealer also has to make a margin. That's why a dealer can't give you their forecourt price for your car.
Where part-exchange fits
A part-exchange offer is what a dealer will allow for your car against another one. It's usually below a realistic private sale price, because the dealer still has to prepare the car and resell it. If your offer feels low, our guide to a part-exchange offer that's too low explains what to do next.
When selling privately is worth it
- The car is worth less than about £10,000. In our data the private vs dealer gap was widest for cheaper cars, so selling privately can make a bigger difference to what you end up with.
- The car is tidy, with a clean MOT record and service history. Private buyers pay more for a car they trust.
- You have time for adverts, messages and a few viewings, and you're comfortable taking payment safely. See how to sell a car privately and safely.
When part-exchange makes sense
- You're buying from a dealer anyway and the gap between their offer and a realistic private price is small.
- The car has problems you don't want to explain to buyers.
- You need it done quickly, or you can't keep two cars while you sell.
Whichever you choose, ask the dealer for the cash price of the car you're buying and the part-exchange allowance separately, so you can compare the whole deal.
Work out your own gap
A free Valu8 valuation gives you a private sale estimate from your number plate, with your official DVSA MOT history, so you can see how a part-exchange offer compares.
FAQs
How much more do you get selling privately?
It depends on the car. In our data, private adverts were typically about 30% below dealer adverts for the same model, year and mileage band, and part-exchange offers are usually lower than a private sale.
Is the gap bigger for cheaper cars?
Yes. For cars a dealer would advertise under £5,000, private adverts were typically about 39% lower. Over £10,000 the gap was about 12%.
Is part-exchange ever the better option?
Yes, when the difference is small, the car has problems, or you need a quick and simple sale.
Does Valu8 buy cars?
No. We don't buy, sell or broker cars, so we have no reason to push your number up or down. All figures are estimates, not offers.