Guide

What a car valuation is actually based on

A car valuation is an estimate, not a fixed price. Here's what actually drives the number.

jargon-busterUpdated 19 August 2026

What a valuation actually is

A car valuation is an estimate of what a specific vehicle is likely to sell for, based on recent sale prices of similar cars: same make, model, age, mileage and condition band. It isn't a guaranteed price. Two valuation tools can give different figures for the same car because they draw on different pools of sale data.

What moves the number

  • Mileage and age: the two biggest factors. Higher mileage and older cars are worth less, roughly along a depreciation curve specific to that model.
  • Condition and history: a full service history, no accident record, and tidy condition all push the valuation up.
  • Colour, trim and options: less common colours and desirable trim levels can move the price a few percent either way.
  • Market demand: fuel type and body style matter too. Demand for some fuel types has shifted noticeably in recent years, which changes resale value independent of the car itself.

Using a valuation properly

Treat a valuation as a starting point for negotiation, not a fixed number to insist on. If you want a valuation alongside a full history check, checking finance, write-off and mileage status too, MOTCO's valuation tool covers that in one place.

Get more than one figure

Run two or three valuations and look at the range rather than a single number. A wide spread usually means the car has less common options or an unusual history that's harder to price automatically.

Common questions

Is an online car valuation accurate?

It's a reasonable estimate for typical cars, but it can be less reliable for rare trims, recent price swings, or vehicles with unusual histories that automated pricing doesn't fully capture.

Does a car valuation account for damage?

Only if you tell it about the damage. Most tools ask for a general condition rating; they don't inspect the car, so undisclosed damage isn't reflected in the number.