Head gasket repair cost UK (2026): confirm it before strip-down
Updated 23 July 2026 · OBDCode UK editorial
Typical UK fitted prices in 2026
| Work | Typical price |
|---|---|
| Diagnosis: pressure/gas/compression tests | £60–£200 |
| Straightforward head-gasket repair | £700–£1,200 |
| Repair with machining/timing/water-pump work | £1,000–£1,700 |
| Cracked head or bottom-end damage | £1,500–£3,000+ |
These are planning ranges, not quotes. Confirm whether VAT, diagnosis, fluids, calibration and related parts are included.
What changes the price?
- Overheating damage: head flatness, cracks and cylinder condition are unknown until measured.
- Engine layout: V engines have two banks; access can be extensive.
- Related maintenance: timing kit, water pump, bolts, fluids and oil contamination add scope.
- Vehicle value: a used/reconditioned engine may be more rational in severe cases.
Confirm the fault before authorising the job
Combine symptom history with cooling pressure, combustion-gas, compression/leak-down and spark-plug/cylinder inspection. Use our coolant-loss guide to rule out cheaper leaks.
How to compare quotes like-for-like
Ask what diagnosis proves, what machining is included, how extra damage is authorised, and whether bolts, gasket set, timing parts, pump, oil/filter, coolant, VAT and warranty are covered.
Frequently asked questions
Is head-gasket sealer a permanent repair?
No reliable permanent repair should be assumed. Sealers can obstruct cooling passages and complicate later work; diagnose the leak first.
Is a head gasket worth repairing?
Compare confirmed total cost, engine condition, vehicle value and replacement alternatives. A good car with limited damage can be worth repairing; severe overheating changes the calculation.
Sources and further reading
General guidance for UK drivers, not professional advice. MOT rules follow the DVSA inspection manual (2026 edition).