Car battery replacement cost: compare like for like

Last reviewed · OBDCode UK editorial

FixMyCar’s current marketplace average for a fitted car-battery replacement is £217. Retrieved 2026-08-14. These figures are what named UK sources published on the retrieval date. They are planning ranges, not a quote for your car. A written estimate for this vehicle is the only figure that counts.

Published UK figures

What the source publishedFigure
FixMyCar average battery replacement£217.37
Their published average for a booked battery replacement, including fitting.
FixMyCar mobile battery replacement average£196.52
A mobile mechanic coming to the car. Confirm coding or registration if the car needs it.

What that figure does not tell you

  • Match the battery type (standard, EFB or AGM). Do not downgrade a stop-start battery.
  • A low voltage reading shows charge state, not remaining capacity.
  • A charging-system or drain fault will flatten the new battery too.

What to ask before authorising work

  • What test shows loss of battery capacity after the battery is properly charged?
  • Does the replacement match the required battery technology, capacity and starting rating?
  • Are fitting, disposal, charging-system checks and any registration or coding included?
  • What warranty applies and has the cause of repeated discharge been checked?

Safety boundary

Do not handle a swollen, leaking, frozen, damaged or hot battery, and never touch orange high-voltage cabling. Under-seat batteries near restraint wiring, lithium systems, hybrids, EVs and vehicles needing complex battery management require model-specific professional review.

How to compare estimates

Compare the same diagnosis, parts, labour, VAT, fluids, calibration, disposal and warranty scope. Do not choose a repair from a warning lamp or fault code alone.

Related guides

Sources

General guidance, not professional advice.

Where does this guidance come from?

This page is written against the UK MOT record and the official guidance that sits behind it, so you can check the underlying material yourself rather than take this page's word for it. The DVSA publishes anonymised MOT test results as open data under the Open Government Licence, and that release is the source this site is built from.