Guide
Automatic and DSG gearbox repair cost: why it runs higher
Updated
An automatic gearbox quote is three quotes wearing a coat: the mechanical rebuild, the electronics, and the software work that makes the car accept the result.
Where the extra money goes
- The torque converter
- On a conventional automatic this is a separate assembly that is normally replaced or reconditioned alongside the box. Reusing a suspect converter after a rebuild is a common route back to the same fault.
- The mechatronic unit
- On dual-clutch boxes such as DSG, DCT and PowerShift, the valve body and control electronics are one serviceable assembly. Many failures diagnosed as gearbox failures are actually mechatronic failures, which is a different and usually smaller job.
- Fluid, filter and cleanliness
- Automatics are sensitive to the correct specification of fluid and to a clean fill. This is a real line on an honest quote, not padding.
- Coding and adaption
- Modern automatics and dual-clutch boxes need software adaption after fitting, and sometimes coding to the car. A quote without it is not a complete quote.
Typical 2026 quote ranges
| Work | Typical range |
|---|---|
| Diagnosis, road test and fault code read | Usually an hour or two of labour, often credited against the repair |
| Automatic fluid and filter service | A fraction of a rebuild, and the first thing to try on harsh shifts |
| Reconditioned automatic gearbox, supplied and fitted | £1,500–£3,000 |
| Dual-clutch rebuild or replacement, supplied and fitted | £2,000–£4,000 |
| Clutch pack only on a dual-clutch box | Below a full replacement, but still a gearbox-out job on most cars |
Diagnose before you buy a gearbox
- Limp mode and a warning light often point at a sensor, a solenoid or the mechatronic unit rather than worn gears.
- Harsh or flaring shifts can follow degraded fluid, especially on a box that has never been serviced.
- Judder from a standstill on a dual-clutch box usually points at the clutch pack, which is a smaller job than a full rebuild.
- Whining that changes with road speed rather than engine speed is more likely a bearing or a driveline component than the gearbox internals.
- Get the fault codes in writing. They travel with you to a second opinion, and a second opinion on a £3,000 job is cheap.
Ranges here are typical 2026 UK quotes for common cars and vary widely. Prestige and performance models sit above them. Use the form to get numbers for your actual car and fault.