7-Speed DCT
Used across relevant petrol, diesel and mild-hybrid i30 applications. Clutch wear, actuator/mechatronic control and adaptation values are core diagnostic areas.
Hyundai i30 Gearbox Repair Specialists in the Midlands
SPEAK TO A TECHNICIAN NOW 01922 666 376 8am - 5.30pm Mon-Fri
Hyundai i30 Transmission Specialists
Hyundai i30 Gearbox Repair Specialists in the Midlands
Specialist diagnosis, repair and reconditioning for Hyundai i30 automatic gearboxes, including the widely used seven-speed DCT on petrol, diesel and mild-hybrid models and the eight-speed wet N DCT used on relevant i30 N Performance versions.
If your i30 shudders under light throttle, delays before Drive, loses gears, slips or shows a transmission warning, we identify whether the car uses 7DCT or the higher-performance wet 8DCT before repair.
Diagnostics From £30Identify the fault first
Fixed QuoteBefore repair work begins
i30 DCT Specialists7DCT & wet 8DCT
12 Month GuaranteeWhere applicable
Which i30 Do You Have?
Hyundai i30 Types, Generations and Gearboxes
The i30 moved from earlier conventional automatics to widespread dual-clutch use. Third-generation i30 petrol and diesel models use 7DCT on relevant automatic versions, while the i30 N Performance introduced an 8-speed wet DCT.
| i30 generation / type | Typical UK versions | Automatic gearbox | What owners often search for |
|---|---|---|---|
| First-generation i30, 2007–2012 | Selected petrol/diesel automatic versions | Conventional automatic on relevant models | i30 automatic fault, delayed Drive, harsh shifts |
| Second-generation i30, 2012–2017 | Petrol and diesel automatic derivatives | Conventional automatic and later dual-clutch applications depending on engine/year | i30 DCT judder, gearbox warning, automatic slipping |
| Third-generation i30, 2017–present | T-GDi, CRDi and mild-hybrid automatic versions | 7-speed DCT widely used | i30 7DCT repair, mechatronic, clutch judder |
| i30 N Performance, relevant 2021–2024 models | 2.0 T-GDi Performance | 8-speed wet N DCT | i30 N DCT fault, wet DCT repair, performance gearbox warning |
Not sure which gearbox is fitted? The standard 7DCT and i30 N wet 8DCT are not interchangeable. Engine, performance specification and gearbox code must be confirmed first.
Transmission Families
Main i30 automatic
Performance model
Earlier i30
Hyundai i30 Gearbox Models Explained
8-Speed Wet N DCT
The i30 N Performance wet DCT uses oil-cooled clutches to handle substantially more torque. Its hydraulic, clutch and internal repair route differs from the standard 7DCT.
Conventional Automatic
Some older i30 automatic versions use traditional torque-converter transmissions, so converter and valve-body diagnosis can be more appropriate than DCT clutch diagnosis.
Common Problems
Common Hyundai i30 Gearbox Issues
i30 gearbox complaints range from low-speed 7DCT judder to high-load wet-DCT faults on the i30 N, so the model and transmission family need to be identified accurately.
Judder or Shudder
Vibration during pull-away or a gear change can involve clutch engagement, converter lock-up, adaptation or hydraulic control depending on the transmission fitted.
Delayed Drive or Reverse
A pause after selecting gear can point towards clutch application, actuator operation, hydraulic pressure, valve-body/mechatronic control or internal wear.
Harsh or Jerky Changes
Abrupt shifts can involve solenoids, adaptations, clutch wear, pressure regulation or internal mechanical damage.
Transmission Warning / Limp Mode
A warning or restricted gear operation should be scanned with Hyundai-compatible diagnostics before parts are replaced.
Slipping / RPM Flare
If engine speed rises without matching acceleration, clutch slip or hydraulic pressure loss should be investigated quickly.
Whine / Clunk / Vibration
Noise can come from the transmission, but mounts, driveshafts, wheel bearings and AWD components can sometimes feel gearbox-related.
Describe the Symptom
What Does a Hyundai i30 Gearbox Fault Sound or Feel Like?
Tell us whether the i30 fault appears in stop-start traffic, under hard acceleration or once the transmission is hot; those conditions help narrow clutch, hydraulic and control faults.
| What you notice | How drivers describe it | Possible areas to investigate |
|---|---|---|
| Judder pulling away | “It shakes as I move off or reverse.” | Clutch/actuator, adaptation, mechatronic control, flywheel or mounts |
| Delay then thump | “I select Drive and it pauses before engaging.” | Hydraulic pressure, clutch application, actuator or valve-body/mechatronic operation |
| RPM flare | “The revs rise before the next gear takes.” | Clutch slip, pressure loss, converter lock-up or internal wear |
| Harsh downshift | “It bangs as I slow down.” | Adaptation, solenoid/clutch control, mounts or internal wear |
| Whine or hum | “The noise changes with road speed.” | Transmission bearings, differential, driveshaft or wheel bearing |
| Warning / limited gears | “The transmission warning appears and it stops shifting normally.” | Stored TCM DTC, pressure/control fault, clutch data or protection mode |
Important: Flywheel, mounts, engine running faults and driveshafts can all create vibration that feels like DCT judder. The i30 N also places higher loads through the transmission and driveline.
Diagnostic Trouble Codes
Hyundai i30 Gearbox Fault Codes
i30 DCT fault codes vary between conventional 7DCT and wet 8DCT systems. Ratio, speed and pressure-related codes should be interpreted alongside clutch and hydraulic live data.
| Fault code | What it broadly relates to | What may need checking |
|---|---|---|
| P0700 | Transmission control system warning request | Read the transmission control module for the underlying gearbox-specific DTCs |
| P0715 | Input / turbine speed sensor circuit | Speed-sensor signal, wiring, control data and internal transmission operation |
| P0722 | Output speed sensor signal fault | Output-speed signal, wiring, sensor data and transmission control |
| P0730 | Incorrect gear ratio | Commanded versus actual ratio, clutch application, hydraulic pressure and internal wear |
| P0741 | Torque-converter clutch performance on applicable conventional automatics | Converter lock-up, valve body, pressure control and fluid condition |
The i30 N wet DCT should not be diagnosed using assumptions from a standard dry-clutch 7DCT. Transmission identification is essential.
Repair Costs
How Much Does a Hyundai i30 Gearbox Repair Cost?
i30 gearbox costs vary from standard 7DCT clutch/control repairs to higher-capacity i30 N wet-DCT work.
| Hyundai i30 gearbox work | Typical guide range | What can change the price? |
|---|---|---|
| Diagnostic scan and road test | From £30 | 7DCT versus N 8DCT |
| 7DCT clutch-pack repair / replacement | Approx. £900 - £1,600 | Clutch condition, flywheel and adaptations |
| DCT mechatronic / actuator repair | Approx. £700 - £1,500 | Hydraulic/electronic fault |
| Full 7DCT repair / reconditioning | Approx. £2k - £4k | Internal damage and required parts |
| i30 N 8DCT repair / reconditioning | Approx. £3k - £4.5k | Wet clutch, hydraulic and internal damage |
Important: These figures are broad specialist guide ranges for customer information and SEO, not advertised fixed prices. A written vehicle-specific quote should follow diagnosis.
Diagnosis Before Parts
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How We Diagnose a Hyundai i30 Gearbox Fault
Identify the gearbox
We identify the i30 generation, engine and whether the vehicle has standard 7DCT or N 8DCT.
Scan the transmission
Hyundai-compatible diagnostics are used to read gearbox faults, clutch data, pressure information and adaptations.
Test the fault area
Clutch packs, actuator/mechatronic control, flywheel and internal gearbox operation are tested against the symptom.
Quote the correct repair
We recommend the repair indicated by the diagnosis and confirm the price before work begins.
i30 Gearbox Fault? Speak to a Hyundai Specialist.
Tell us the i30 year, engine and whether it is an N Performance model, plus exactly when the gearbox fault appears.
Midlands Coverage
Hyundai i30 Gearbox Repairs Across the Midlands
Service4Service Midlands provides Hyundai i30 gearbox diagnosis and repair for drivers across Birmingham, Coventry, Wolverhampton, Walsall, Solihull, Leicester, Derby, Nottingham, Stoke-on-Trent, Northampton and surrounding East and West Midlands areas.
Whether your i30 is juddering in Birmingham, losing gears in Coventry or showing an N DCT warning in Solihull, the correct repair begins by identifying the exact dual-clutch system.
More Hyundai gearbox guides:
Looking for information covering the whole Hyundai range? Visit our Hyundai gearbox repair page.
Common Questions
Hyundai i30 Gearbox Problems: Straight Answers
What gearbox does a Hyundai i30 automatic use?
Many third-generation i30 automatic versions use a seven-speed DCT. Relevant i30 N Performance models were also available with an eight-speed wet N DCT.
Why is my i30 DCT juddering at low speed?
Possible causes include clutch wear, adaptation, mechatronic/actuator control or flywheel/driveline movement.
Is the i30 N DCT the same as the normal i30 7DCT?
No. The i30 N uses a higher-capacity eight-speed wet dual-clutch transmission on relevant models.
Can an i30 DCT control unit be repaired?
Many actuator, mechatronic and hydraulic faults can be repaired or reconditioned once live data confirms the failure.
How much does an i30 gearbox repair cost?
Standard 7DCT repairs are generally different in price from the higher-capacity i30 N wet DCT. Diagnosis determines the final quotation.
Should I drive an i30 with a gearbox warning?
If gears are missing, the clutch is slipping or the car is remaining in limp mode, avoid unnecessary driving and arrange diagnosis.
Get a Hyundai i30 Gearbox Diagnosis
Conventional automatic, 7DCT or i30 N 8DCT — identify the exact gearbox first, then repair the clutch, control or internal fault testing proves.
