DCT Gearbox having issues?
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DCT Gearbox Repair in London
If your dual-clutch gearbox is juddering, hesitating or dropping into limp mode, our London repair centres can find the cause and fix it, often without the cost of a new gearbox.
Our technicians repair both dry-clutch and wet-clutch DCTs on all major makes, from a Hyundai i30 or Mercedes A-Class through to the BMW M DCT. Every job starts with a proper diagnosis, and you get a confirmed price before any work begins. Repairs use manufacturer warranty-approved parts and are backed by our 12-month or 12,000-mile warranty on parts and labour.
- 18+ yearsgearbox repair experience
- 20,000+rebuilds completed
- 12 months / 12,000 milesparts & labour warranty
- Collection & deliveryavailable across London
What Is a DCT Gearbox?
A dual-clutch transmission is effectively two gearboxes in one. One clutch handles the odd gears and the other handles the even gears, so the next gear is already pre-selected. A gear change is simply one clutch disengaging as the other engages, which gives fast, smooth shifts with no loss of drive. A mechatronic unit (the gearbox's hydraulic and electronic control centre) decides when to shift and operates the clutches.
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Dry-Clutch DCTs
Used in many smaller and mid-size cars. The clutches run without oil, which makes them efficient but more prone to wear and judder in stop-start traffic, a common issue for London drivers.
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Wet-Clutch DCTs
Found in more powerful cars. The clutches run in oil to cope with higher torque and heat. Old, low or contaminated gearbox oil is one of the most common causes of faults on these units.
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DSG & Powershift
Volkswagen Group DSG and Ford Powershift are also dual-clutch designs. See our dedicated DSG gearbox repairs and Powershift gearbox repairs pages.
Signs Your DCT Gearbox Needs Attention
DCT faults usually start small and get worse. Getting the gearbox checked early often means a smaller repair bill.
- Judder when pulling away or creeping in traffic
- Jerky or harsh gear changes, especially at low speed
- A delay after selecting Drive or Reverse
- Revs rising without the car accelerating (clutch slip)
- A flashing gear display or gearbox warning light
- Limp mode, or gears missing altogether
- Rattling, whining or grinding noises
- A burning smell or oil leaking from the gearbox
Why Do DCT Gearboxes Fail?
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Clutch Wear
Heavy traffic and hill starts wear the clutch packs, causing slip and judder.
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Mechatronic Faults
Valve, pressure and solenoid problems in the mechatronic unit cause erratic or failed shifts.
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Sensor & Control Unit Failures
Faulty sensors or a failing control unit can trigger warning lights and limp mode.
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Oil Problems
Old, low or contaminated oil leads to overheating and accelerated wear on wet-clutch units.
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Actuator, Fork & Bearing Wear
Worn selector forks, actuators and release bearings cause noise and selection faults.
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Dual-Mass Flywheel
A worn flywheel can mimic gearbox faults, with rattles and vibration at idle.
Not Sure What's Wrong With Your Gearbox?
Describe the symptoms to one of our specialists and we'll tell you the likely cause and the next step.
0203 905 6741 Mon–Fri · 8am–5:30pmOur DCT Repair Services in London
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Diagnostics
Full gearbox testing, not just a fault code read.
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Clutch Replacement
New dual-clutch packs fitted and set up correctly.
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Mechatronic Repairs
Repair or replacement of the mechatronic unit.
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Control Unit & Software
TCU faults, software updates and reprogramming.
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Actuator, Fork & Bearing Repairs
Worn internal components replaced.
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Leak & Seal Repairs
Oil leaks traced and seals replaced.
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Full DCT Rebuilds
Complete strip-down, rebuild and test.
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Reconditioned Replacement
A quality reconditioned unit when repair isn't viable.
How We Repair Your DCT Gearbox
Many DCT faults don't need a new gearbox. We find the real cause first, then repair only what needs repairing.
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Diagnose
We test the gearbox properly to pinpoint the fault. The diagnostic report is usually ready within 2–3 days.
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Agree the Plan
We explain the fault, the repair we recommend and the confirmed price. Nothing starts without your approval.
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Repair
The work is carried out with OEM or manufacturer warranty-approved parts and the correct gearbox oil.
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Relearn & Road Test
Clutch and gear adaptations are reset so the gearbox relearns them, then the car is road tested.
Cars We Repair With a DCT Gearbox
We repair dual-clutch gearboxes on every major manufacturer. These are some of the most common models we see at our London centres.
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Hyundai
7DCT / 8DCTi20, i30, i30 N, i40, Bayon, Kona, Kona N, Tucson, Ioniq Hybrid
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Kia
7DCTRio, Stonic, Ceed, ProCeed, XCeed, Soul, Niro, Optima, Sportage
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Mercedes-Benz
7G-DCT / 8G-DCTA-Class, AMG A 35, AMG A 45, B-Class, CLA, CLA Shooting Brake, GLA, GLB, AMG GT
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BMW
7-speed DCT / M DCT1 Series, 2 Series Active Tourer, 2 Series Gran Coupé, X1, X2, M2, M3, M4
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MINI
7-speed DCTHatch, Convertible, Clubman, Countryman
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Nissan
DCTQashqai, Juke, GT-R
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Fiat & Jeep
DCTFiat 500X, 500L, Tipo · Jeep Renegade, Compass
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MG
7DCTHS
Not every version of these models has a DCT gearbox. If you're unsure what's fitted to your car, give us a call and we'll check for you.
Why London Drivers Trust Us With Their DCT
- Dedicated gearbox specialists, with 18+ years' experience and 20,000+ rebuilds
- Hands-on experience across all the major dual-clutch designs
- Manufacturer warranty-approved parts, so your existing warranty is protected
- We work with your warranty provider on your behalf where your policy allows
- Collection and delivery available if your car isn't safe to drive
- 12-month or 12,000-mile warranty on parts and labour, with the price agreed upfront
DCT Gearbox Repair FAQs
What are the common signs of a DCT gearbox problem?
The most common signs are judder when pulling away, jerky or delayed gear changes, a flashing gear display or warning light, unusual noises, and the gearbox slipping or going into limp mode.
Can I keep driving with a faulty DCT gearbox?
We don't recommend it. Continuing to drive can turn a clutch or sensor fault into much more extensive internal damage. If your car isn't safe to drive, we can arrange collection.
Why does my DCT judder when pulling away?
Judder is usually caused by clutch wear, the condition of the gearbox oil, or clutch adaptation values drifting out of range. A diagnosis will confirm whether a relearn, oil change or clutch replacement is needed.
How much does a DCT gearbox repair cost in London?
It depends on the fault and the gearbox. A software relearn costs far less than a clutch replacement or full rebuild. We diagnose the fault first and give you a confirmed price before any work starts.
How long does a DCT repair take?
The diagnostic report is usually ready within 2–3 days. Repair time then depends on the work needed and parts availability, and we'll give you a timescale when we agree the plan.
Should I repair or replace my DCT gearbox?
Most DCT faults can be repaired without replacing the gearbox. Replacement with a reconditioned unit is only recommended where the internal damage is extensive or a repair wouldn't be cost-effective.
Will a DCT repair affect my manufacturer or extended warranty?
No. We use manufacturer warranty-approved parts, so your warranty is protected. We're also approved by many warranty providers and can deal with your provider on your behalf.
How long does a DCT gearbox last?
A well-maintained DCT can last the life of the car. Dry-clutch units are more sensitive to heavy stop-start traffic, so London driving can wear the clutches sooner.
Speak to a London DCT Gearbox Specialist
Fixed price agreed upfront. Manufacturer warranty-approved parts. 12-month or 12,000-mile warranty on every repair.
0203 905 6741 Mon–Fri · 8am–5:30pm