Part exchange or private sale: which is better?
Neither is always right. The question is how much extra money a private sale would bring, and whether that is worth the time and effort to you.
The short answer
Private sale if the car is in good order with a strong history and you have a few weeks. Part exchange if you want the car gone the day you collect the next one, or the car has faults you would rather not explain to a stranger.
Either way, get a valuation first so you know the trade figure before anyone makes you an offer.
Side by side
| Part exchange | Private sale | Car buying service | |
|---|---|---|---|
| Typical price | Close to the trade figure | Between trade and forecourt | Usually near trade, set at inspection |
| Time to sell | Same day as your new car | Days to weeks | Often within days |
| Your effort | Very little | Adverts, viewings, payment, paperwork | A booking and an inspection |
| Payment risk | None | Yours to manage | Low |
| DVLA step | Motor trader route | New keeper slip to the buyer | Motor trader route |
Which suits you?
Do you need the old car gone on the day you pick up the new one?
YesPart exchange. It is the only option that lines up exactly with your collection date.NoGo to the next questionIs the car in good condition, with a full service history?
YesGo to the next questionNoPart exchange or a buying service. Buyers pay a premium for well-kept cars, so the private gap is smaller for one that needs work.Are you happy to meet buyers and handle the money yourself?
YesPrivate sale. You are likely to get noticeably more than trade.NoPart exchange, or compare a buying service's inspected offer against the trade figure.
Getting a fair part exchange
Know the trade figure
Get a valuation before you visit. The trade figure is your benchmark for any offer.
Agree the new car's price first
Settle the price of the car you are buying before discussing yours. A generous part exchange can hide a high price on the new car.
Then negotiate your car's value
Bring the service book and both keys. Point out recent work, such as new tyres or a fresh MOT.
Get the whole deal in writing
Both prices, any finance settlement, and the final amount to pay. Check it adds up before you sign.
Online car buying services
These give a price online in minutes, then inspect the car before paying. The final offer is made at the inspection and can be lower than the first online price, especially for marks, missing history or a second key that cannot be found.
Treat the online price as a starting point, and compare the inspected offer with the trade figure in your valuation before you accept.
Telling DVLA
When you sell to a dealer or buying service, use the motor trader option of the DVLA service on GOV.UK. In a private sale you give the buyer the green new keeper slip instead. Either way, your vehicle tax is cancelled and any full months left are refunded. The paperwork guide has the detail.
Questions people ask
Is part exchange or a private sale better?
A private sale usually pays more, because you sell for somewhere between the trade and forecourt prices. A part exchange is quicker and simpler, and usually pays close to the trade price. Choose by how much the extra money is worth to you against the time and effort.
How do I get the best part exchange price?
Know your car's trade value before you go, agree the price of the new car first, then negotiate the value of yours with the service book and keys to hand. Get the whole deal in writing and compare the final amount to pay between dealers.
Can I part exchange a car with finance on it?
The finance must be settled as part of the sale. Get a settlement figure from your lender and make sure the written deal shows how it is paid off.
Why was the car buying service's final offer lower?
Online prices assume the car matches your description. The binding offer comes after an inspection, which can lower it for damage, missing service history or a missing key. Compare it with the trade figure in your valuation.
Who tells DVLA when I part exchange?
You tell DVLA using the motor trader option of the online service. Your vehicle tax is then cancelled and any full months left are refunded.
Sources
Checked against these on 31 October 2026. If the rules change, the source is the final word.
- Tell DVLA you've sold, transferred or bought a vehicle GOV.UK, DVLA
- Cancel your vehicle tax and get a refund GOV.UK, DVLA