Part-exchange or private sale: which gets you more for your car?
A private sale often brings a higher price, but part-exchange trades some of that for speed and simplicity. Here's how to weigh them up.
21 October 2026
The Estimo team · Published 2 November 2026
Higher mileage usually lowers a car's value, because buyers expect more wear and sooner replacement of parts. But mileage is judged against the car's age, and a well-maintained higher-mileage car with full history can be worth more than a neglected low-mileage one.
Mileage is a quick shorthand for how much a car has been used. More miles usually mean more wear on the engine, gearbox, suspension, brakes and interior. Buyers also know that some expensive parts need replacing at certain mileages, so a car close to those points can be less attractive.
That's why two otherwise identical cars can be priced quite differently if one has covered far more miles.
A figure on its own means little. Buyers instinctively compare mileage to the car's age:
Annual mileage varies a lot between drivers, so there's no exact "correct" number. What buyers want is a figure that makes sense for the car's story.
A higher-mileage car can still hold its value well if:
Conversely, a low-mileage car with gaps in its history, or one that's sat unused for long periods, can raise more questions than it answers.
Mileage tampering — "clocking" — still happens. Before buying or setting a price, check:
A history that fits together is one of the strongest supports for a car's value.
You can still get a fair price by:
Check your car's MOT history, gather the paperwork and get a personalised range with Estimo's car valuation. For the wider picture, read what your used car is actually worth.
Estimo gives indicative, AI-assisted guidance based on the information provided. It is not a formal quotation, valuation, survey or professional advice. Always confirm with a qualified professional before committing money.
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