Guide
Reconditioned, replacement or used gearbox: which is worth it?
Updated
The choice is rarely about the gearbox. It is about how long you intend to keep the car, and whether the warranty on the cheap option is worth anything.
The four routes, side by side
| Route | Typical range | Typical warranty | Main risk |
|---|---|---|---|
| Used unit from a salvage yard | £400–£1,200 | Often only a few months, sometimes parts only | You are buying someone else's unknown mileage |
| Reconditioned exchange unit | £800–£1,800 manual, £1,500–£3,000 automatic | Commonly 12 months | Rebuild quality varies between rebuilders |
| Repair of your own gearbox | £700–£1,600 | Usually on the parts and work done, not the whole box | A second fault surfacing later in an old unit |
| New unit from the manufacturer | Frequently the price of the car on older vehicles | Manufacturer warranty | Rarely economic outside newer or prestige cars |
These are typical 2026 quote ranges, not prices: no official source publishes gearbox costs, and the same job on two different cars can differ by a factor of three. Use them to tell a reasonable quote from an unreasonable one, then get real numbers.
The question that actually decides it
- How long are you keeping the car? Under a year, a used unit with a short warranty can be the rational choice. Three years or more, and the 12-month warranty on a reconditioned exchange unit usually earns its premium.
- What is the car worth? If the fitted quote is a large share of the car's value, you are deciding whether to keep the car, not which gearbox to buy. Get the quote in writing before you decide.
- Is the diagnosis solid? Slipping, limp mode and harsh shifts on an automatic can be a sensor, a solenoid or fluid rather than the gearbox itself. Pay for diagnosis first; it is the cheapest hour in this entire job.
- Is the clutch original? On a manual with high mileage, fitting a clutch and dual-mass flywheel while the box is already out costs a fraction of doing it as a separate job later.
What 'reconditioned' should mean
There is no legal definition of a reconditioned gearbox, which is exactly why you should ask what was done to it. A reasonable rebuild strips the unit, inspects every gear and shaft, and replaces bearings, seals and worn synchros as standard. Ask, in writing:
- Which parts are replaced as standard on every rebuild, rather than only if found faulty.
- What the warranty covers and for how long: parts only, or parts and the labour to remove and refit if it fails again. That second half is the expensive half.
- Whether it is your unit rebuilt or an exchange unit, and if exchange, whether there is a surcharge on your old box.
- Whether the quote includes oil, seals, clutch, and any coding or adaption the car needs afterwards. Dual-clutch and modern automatics usually need software work as part of the fit.
If a garage supplies and fits the unit, they are supplying goods and a service together. Both carry rights under the Consumer Rights Act 2015, see your rights if the repair fails.