About this data · our methodology
This guide is based on real supplier quotes and interviews with UK gearbox specialists. All cost figures are sourced from [EM-QUOTE] and verified against supplier pricing. Labour hours are based on [EM-OBSERVED] data.
[EM-QUOTE]Derived from supplier quotes & interviews
[EM-INTERVIEW]Direct statements from mechanics & workshop owners
[EM-OBSERVED]Marketplace trend from specialist interviews
[THIRD-PARTY]External data from named industry sources
Review cycle: annually · next full review: January 2027 · prices reviewed quarterly.
Symptoms
Signs Your Automatic Gearbox Needs Attention
Automatic gearboxes give you warning signs - but they're different from manuals. Don't ignore them.
Harsh or jerky shifting
Valve body issue, worn clutch packs, low fluid
⚠️ Get checked - progressive wear
Slipping between gears
Worn clutch packs, low fluid pressure, fluid contamination
⚠️ Get checked - could lead to complete failure
Delayed engagement (D or R)
Low fluid, worn pump, solenoid issue, valve body wear
⚠️ Get checked - early indicator of serious issues
Transmission overheating
Low fluid, clogged cooler, internal wear
🔴 Get checked immediately - heat destroys automatics
Transmission warning light
Internal fault - fluid temp, solenoid, sensor, speed sensor
🔴 Get checked - driving could cause catastrophic damage
Whining or humming noise
Worn bearings, low fluid, pump wear
⚠️ Get checked - progressive wear
Burning smell
Overheated fluid - clutch packs slipping
🔴 Stop driving - possible fire risk
Leaking fluid (red/brown)
Seals worn, damaged casing, cooler line leak
⚠️ Get checked - low fluid causes internal wear
Rough idle in gear
Torque converter issue, engine mount wear
⚠️ Get checked - could be converter or mounts
No drive in any gear
Complete internal failure, pump failure, valve body failure
🔴 Do not drive - immediate replacement needed
When to Stop Driving Immediately
Complete loss of driveMajor internal failure - driving is impossible.
Transmission warning lightInternal fault - driving could destroy the gearbox.
Burning smellFluid overheating - clutch packs are slipping.
Loud grinding / clunkingInternal damage - driving could cause catastrophic failure.
"Automatic gearboxes give you more warning than manuals - but the warning signs are different. Delayed engagement, harsh shifting, a whine that changes with engine speed - these are your gearbox telling you something. Ignoring them can turn a £500 valve body repair into a £3,000 gearbox replacement."
- UK Gearbox Specialist Interview #10 [EM-INTERVIEW]
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Gearbox types
Automatic Gearbox Types - What's in Your Car-
Different automatic gearboxes have different costs, complexity, and common failures.
Torque Converter (Traditional Auto)
Uses fluid coupling (torque converter) to transfer power. Planetary gearsets. Smooth, refined.
£1,000-£4,000
Mercedes, BMW, Jaguar, Land Rover, Audi, Lexus, Ford, Vauxhall
Medium
CVT (Continuously Variable)
Uses pulleys and belts - seamless, variable ratio. Fuel-efficient.
£1,200-£5,000
Honda, Toyota, Nissan, Subaru, Audi (Multitronic), Mitsubishi
Medium-High
DSG / DCT (Dual-Clutch)
Two clutches - preselects next gear. Fast shifts, sporty.
£1,500-£7,000
VW, Audi, Seat, Skoda, Ford, Porsche, BMW (DCT), Hyundai/Kia
High
Hybrid / EV Transmission
Integrated with electric motor. Specialist applications.
£2,000-£6,000+
Toyota/Lexus Hybrid, Honda Hybrid, Nissan e-Power
Very High
| If Your Car Is... | Likely Gearbox Type |
|---|---|
| A premium car (BMW 3, Mercedes C, Audi A4, Jaguar XE) | Torque converter automatic or DSG/DCT |
| A luxury SUV (Range Rover, Q7, X5, GLE) | Torque converter automatic |
| A Japanese car (Honda, Toyota, Nissan) | CVT or torque converter automatic |
| A VW Group car (VW, Audi, Seat, Skoda) | DSG (Dual-Clutch) or torque converter |
| A performance car (GTI, RS, M, AMG) | DSG/DCT or torque converter |
| A hybrid (Prius, Yaris Hybrid, Lexus) | Hybrid e-CVT |
| A Ford / Vauxhall family car | Torque converter automatic or DSG/DCT |
[EM-OBSERVED] based on UK vehicle market data.
Why it costs more
Why Automatic Costs More - The Complexity Factor
Automatic gearboxes are significantly more complex than manuals, which drives up cost.
| Factor | Manual | Automatic | Impact on Cost |
|---|---|---|---|
| Internal components | Gears, synchromesh, shift forks | Clutch packs, planetary gearsets, valve body, solenoids, torque converter | Automatic has 3x more components |
| Fluid | Gear oil (2-3 litres) | ATF (8-12 litres) - specialised fluid | ATF costs significantly more |
| Electronics | None | TCU, solenoids, speed sensors, temperature sensors | Requires specialist diagnostics |
| Tooling | Basic workshop tools | Specialised diagnostic equipment, pressure testers | Specialists charge more |
| Labour time | 4-8 hours | 8-15 hours | Almost double the labour |
| Specialist knowledge | General mechanic can work on manuals | Specialist knowledge required | Specialist rates are higher |
| Parts availability | Widely available | Often vehicle-specific | Less supply = higher cost |
The Cost Breakdown
| Cost Component | Manual | Automatic | Difference |
|---|---|---|---|
| Gearbox unit (reconditioned) | £800-£2,500 | £1,500-£4,500 | +£700-£2,000 |
| Labour | £260-£1,280 | £520-£2,400 | +£260-£1,120 |
| Fluid | £50-£100 | £150-£400 | +£100-£300 |
| Total | £500-£3,000 | £1,000-£5,000 | +£500-£2,000 |
[EM-QUOTE] based on supplier data. Labour rates vary by region.
Valve body note
The Valve Body / Mechatronic Note - Not Always Full Replacement
Many automatic gearbox issues are valve body or mechatronic unit failures - and these can often be repaired rather than replaced.
🔧 What Is the Valve Body / Mechatronic Unit-
- Valve Body - Controls fluid flow to clutch packs. Like the "brain" of the gearbox. Failure signs: harsh shifting, delayed engagement, slipping.
- Mechatronic Unit - Integrated valve body + electronics (common in DSG/DCT). Failure signs: same as above + warning lights, limp mode.
- Solenoids - Electrically controlled valves within the valve body. Failure signs: individual gear issues, delayed engagement.
When Valve Body Repair Makes Sense
| Scenario | Valve Body Repair Cost [EM-QUOTE] | Full Replacement Cost [EM-QUOTE] | Saving |
|---|---|---|---|
| Harsh shifting, no internal damage | £400-£1,000 | £2,000-£5,000 | £1,000-£4,000 |
| Delayed engagement, no slipping | £400-£1,200 | £2,000-£5,000 | £800-£3,800 |
| Warning light, code points to solenoid | £300-£800 | £2,000-£5,000 | £1,200-£4,200 |
[EM-QUOTE] based on supplier data. Valve body repair can save thousands.
"About 40% of automatic gearbox 'failures' we see are actually valve body or mechatronic issues - not full gearbox failures. The customer thinks they need a new gearbox, but a £500-£1,000 valve body repair solves the problem. Always get a proper diagnostic before assuming the worst."
- UK Gearbox Specialist Interview #11 [EM-INTERVIEW]
Important: If the valve body has failed due to internal debris (from worn clutch packs), the gearbox itself may also be damaged. Always get a full diagnostic before deciding on valve body repair vs full replacement.
Cost data · [EM-QUOTE]
Automatic Gearbox Cost Data
Based on supplier quotes and industry data.
£1,000-£4,000
Torque Converter
£1,200-£5,000
CVT
£1,500-£7,000
DSG/DCT
£300-£1,200
Valve Body Repair
Replacement Cost by Gearbox Type and Condition
| Gearbox Type | Used [EM-QUOTE] | Reconditioned [EM-QUOTE] | New [EM-QUOTE] |
|---|---|---|---|
| Torque Converter (6-speed) | £800-£1,800 | £1,500-£3,000 | £3,500-£5,000 |
| Torque Converter (8-speed) | £1,200-£2,500 | £2,000-£4,000 | £4,000-£6,500 |
| CVT | £1,000-£2,500 | £1,800-£3,500 | £3,500-£5,500 |
| DSG/DCT (6-speed) | £1,200-£3,000 | £2,000-£4,500 | £4,500-£6,500 |
| DSG/DCT (7-speed) | £1,500-£3,500 | £2,500-£5,000 | £5,000-£7,500 |
| Hybrid e-CVT | £1,500-£3,500 | £2,500-£5,000 | £4,000-£8,000 |
[EM-QUOTE] derived from supplier quotes. Prices are supply-only.
Replacement Cost by Vehicle Type (Reconditioned, Fitted)
| Vehicle Type | Typical Cost [EM-QUOTE] | Typical Gearbox Type |
|---|---|---|
| Family car (Focus, Golf automatic) | £1,800-£3,000 | Torque converter or DSG |
| Executive (BMW 3, Mercedes C, Audi A4) | £2,500-£4,500 | Torque converter or DSG/DCT |
| Luxury SUV (Range Rover, Q7, X5) | £3,000-£5,000 | Torque converter (8-speed) |
| Japanese (Honda, Toyota, Nissan) | £1,800-£3,500 | CVT or torque converter |
| VW Group (VW, Audi, Seat, Skoda) | £2,000-£5,000 | DSG/DCT |
| Performance (GTI, RS, M, AMG) | £3,000-£6,000 | DSG/DCT or torque converter |
| Hybrid (Prius, Lexus) | £2,500-£5,000 | Hybrid e-CVT |
[EM-QUOTE] fitted costs including labour. Labour varies by region.
Labour Cost Breakdown
| Labour Component | Hours | Cost (North £65-£95/hr) | Cost (London £110-£160/hr) |
|---|---|---|---|
| Removal of old gearbox | 4-7 hrs | £260-£665 | £440-£1,120 |
| Fitting replacement gearbox | 4-7 hrs | £260-£665 | £440-£1,120 |
| Fluid filling and programming | 1-2 hrs | £65-£190 | £110-£320 |
| Testing | 1 hr | £65-£95 | £110-£160 |
| Total | 8-15 hrs | £520-£1,425 | £880-£2,400 |
[EM-OBSERVED] labour hours. Labour rates from [THIRD-PARTY] industry surveys.
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Condition types
Condition Types - What's the Difference-
Choose the right condition based on your budget and vehicle value.
| Condition | What It Means | Best For | Warranty | Risk |
|---|---|---|---|---|
| Used | Removed from a donor vehicle. Visually inspected. Sold as-is. | Budget-conscious owners, older vehicles | 3-6 months | Unknown history - potential internal wear |
| Reconditioned | Fully dismantled, inspected, worn parts replaced (clutch packs, bearings, seals). Tested. | Most owners - best value | 6-24 months | Quality varies by specialist |
| New OEM | Brand new from manufacturer. Full warranty. | High-value vehicles, insurance jobs | 12-24 months | Most expensive |
Which Condition Is Right for You-
Vehicle worth under £3,000, budget priorityUsed - minimises cash outlay
Vehicle worth £3,000-£8,000, keeping 2+ yearsReconditioned - best value
Vehicle worth over £8,000, long-term ownershipReconditioned or New - reliability matters
Performance vehicle, heavy useReconditioned with upgraded parts - stronger clutch packs
Insurance or warranty jobNew or Reconditioned - depending on policy
Decision framework
Repair vs Replacement Decision Framework
Use this framework to decide whether to repair or replace your automatic gearbox.
⚠️ Harsh shifting, no slipping, no warning light
Repair - likely valve body issue (£400-£1,000)
⚠️ Delayed engagement, no slipping
Repair - likely valve body or solenoid (£400-£1,200)
❌ Slipping between gears, warning light on
Replace - clutch packs worn - internal damage likely
❌ Burning smell, overheating
Replace - fluid contamination - internal damage
❌ Complete loss of drive
Replace - major internal failure
✅ Warning light only - no drivability issues
Diagnose first - could be sensor (£100-£300)
❌ Vehicle value under £3,000, replacement over £2,000
Scrap or used - replacement is uneconomical
The Threshold Rule
Under 30%✅ Repair - financially sound
30-50%⚠️ Evaluate carefully - consider vehicle value
Over 50%❌ Replace - repair is approaching replacement cost
"With automatics, you have three options: valve body repair (if the gearbox is otherwise sound), reconditioned (if the gearbox is rebuildable), or replacement (if the gearbox is scrap). We always advise: start with a diagnostic to see if valve body repair is possible. It could save you £1,000+."
- UK Gearbox Specialist Interview #12 [EM-INTERVIEW]
Cost comparison
Manual vs Automatic - Cost Comparison
| Factor | Manual | Automatic |
|---|---|---|
| Typical replacement cost | £500-£3,000 | £1,000-£5,000 |
| Labour hours | 4-8 hours | 8-15 hours |
| Labour cost | £260-£1,280 | £520-£2,400 |
| Complexity | Lower - simpler mechanical components | Higher - hydraulics, electronics, cooling |
| Clutch replacement | Often done at same time | Not applicable (or internal) |
| Valve body repair option | Not applicable | Often possible - £400-£1,200 |
| Specialist tooling | Basic workshop tools | Specialist diagnostic equipment |
| Warranty (reconditioned) | 3-12 months | 6-24 months |
When Automatic Makes Sense
Vehicle worth over £8,000The replacement cost is proportionate to vehicle value.
You prefer driving an automaticThe replacement cost is the price of the driving experience.
Vehicle has high resale valueThe investment protects the vehicle's value.
Comfort and convenience are prioritiesAutomatic is the right choice - replacement is a necessary cost.
Real-world insights
Anecdotal Validation from UK Specialists
The following insights are drawn from interviews with UK gearbox specialists [EM-INTERVIEW].
"A customer came in with a BMW 5 Series - harsh shifting, delayed engagement. The main dealer quoted £4,000 for a new gearbox. We diagnosed it as a valve body issue. £800 later, the gearbox was shifting like new. That's the difference a proper diagnostic makes."
- UK Gearbox Specialist Interview #13 [EM-INTERVIEW]
"DSG gearboxes are brilliant when they work - and expensive when they don't. The mechatronic unit is the most common failure point. A mechatronic repair or replacement costs £600-£1,500 - far less than a full gearbox replacement. But it needs specialist knowledge."
- UK Gearbox Specialist Interview #14 [EM-INTERVIEW]
"CVT gearboxes are often neglected. The fluid needs changing every 60,000-80,000 miles. If you don't, the belt and pulleys wear, and the gearbox fails. A fluid change is £200-£400. A full CVT replacement is £2,000-£4,000."
- UK Gearbox Specialist Interview #15 [EM-INTERVIEW]
How it works
How Engines Market Works
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Frequently asked questions
Automatic Gearbox FAQs
How much does automatic gearbox replacement cost- +
Torque converter automatic £1,000-£4,000, CVT £1,200-£5,000, DSG/DCT £1,500-£7,000. Prices vary by gearbox type, condition, and vehicle.
What's the difference between torque converter, CVT, and DSG- +
Torque converter - traditional auto, smooth, uses fluid coupling. CVT - uses pulleys and belts, seamless ratio changes. DSG/DCT - dual-clutch, fast shifts, sporty.
Can a valve body issue be repaired without replacing the whole gearbox- +
Yes - many automatic gearbox issues (harsh shifting, delayed engagement) are valve body or mechatronic issues. Repair costs £400-£1,200 - far less than full replacement.
What are the signs of automatic gearbox failure- +
Harsh shifting, slipping between gears, delayed engagement, transmission overheating, transmission warning light, whining noise, burning smell, leaking fluid.
How long does automatic gearbox replacement take- +
Labour typically takes 8-15 hours (1-3 days). Additional time for sourcing the gearbox. Allow 3-7 days for the complete process.
What warranty comes with an automatic gearbox replacement- +
Used: 3-6 months. Reconditioned: 6-24 months. New: 12-24 months. Always check the specific terms with your supplier.
Is automatic gearbox replacement more expensive than manual- +
Yes - automatic gearboxes are more complex, have more components, and require more labour. Typical automatic replacement costs £1,000-£5,000 vs manual £500-£3,000.
Do I need to tell the DVLA and my insurer- +
Gearbox replacement doesn't require DVLA notification. You should check with your insurer - some policies require notification of major mechanical changes.
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This guide is based on Engines Market quote data [EM-QUOTE] and supplier interviews [EM-INTERVIEW]. Prices are indicative - always get real quotes before making a decision.