%20DSC%208545.jpg?width=1600)
7-Speed DCT
Seven-speed DCT on mainstream i30 models uses dry-clutch technology on relevant applications, making clutch wear, adaptation and low-speed control important when judder develops.
Hyundai i30 Gearbox Repair Specialists in the South East
SPEAK TO A TECHNICIAN NOW 01580 239 610 8am - 5.30pm Mon-Fri
Hyundai i30 Transmission Specialists
Hyundai i30 Gearbox Repair Specialists in the South East
The Hyundai i30 uses more than one dual-clutch system, which makes model identification essential. Mainstream third-generation cars commonly use seven-speed DCT, while the i30 N uses a stronger eight-speed wet N DCT designed for performance use.
A low-speed shake on a 1.5 T-GDi DCT and a hard shift or warning on an i30 N may feel related, but the clutch hardware, hydraulic system and heat management are different.
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
Early i30 automatics used conventional transmissions, later second-generation cars introduced dual-clutch applications, and the current range uses seven-speed DCT widely. The i30 N adds a dedicated eight-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 |
Check the specification: Confirm whether the i30 uses standard 7DCT or N 8DCT before any clutch or mechatronic parts are selected.
Transmission Families
Main i30 automatic
Performance model
Earlier i30
Hyundai i30 Gearbox Models Explained
8-Speed Wet N DCT
The eight-speed wet N DCT is a higher-capacity performance transmission with oil-cooled clutches and different hydraulic control. It should not be treated as a stronger version of the standard 7DCT with identical repair parts.
Conventional Automatic
Earlier conventional automatic i30s use torque-converter and valve-body hydraulics, so delayed engagement or shudder on those cars follows a different diagnostic route.
Common Problems
Common Hyundai i30 Gearbox Issues
i30 searches split clearly between '7DCT judder', 'mechatronic fault', 'clutch slipping' and performance-specific queries such as 'i30 N DCT warning' or 'N DCT overheating'. The transmission family determines which clutch and pressure data matters.
Judder or Shudder
Mainstream 7DCT pull-away judder can be caused by clutch wear, adaptation, actuator control or flywheel movement.
Delayed Drive or Reverse
An N DCT that shifts harshly under load may need pressure, clutch temperature and hydraulic-control data checked rather than assumptions from the dry-clutch 7DCT.
Harsh or Jerky Changes
Delayed Drive can come from clutch application on DCT models or hydraulic pressure on earlier conventional automatics.
Transmission Warning / Limp Mode
Gearbox warnings can be triggered by clutch, actuator, sensor, temperature or ratio faults and should be scanned before the vehicle is driven hard.
Slipping / RPM Flare
RPM flare under acceleration points towards clutch or internal slip and is particularly important on performance models where load is higher.
Whine / Clunk / Vibration
Whine or vibration can also come from differential, driveshaft, engine mount or wheel-bearing faults and should be isolated before gearbox repair.
%20DSC%208543.jpg?width=1600)
Describe the Symptom
What Does a Hyundai i30 Gearbox Fault Sound or Feel Like?
Tell us whether the i30 problem appears during slow manoeuvring, a hard upshift, sustained performance driving or only once the transmission is hot. The pattern helps separate standard 7DCT and N DCT behaviour.
| 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: Performance-related heat and pressure behaviour should be assessed under the conditions where the fault actually occurs.
Diagnostic Trouble Codes
Hyundai i30 Gearbox Fault Codes
i30 fault codes are matched to clutch position, pressure, temperature and adaptation data from the specific 7DCT or N 8DCT fitted. The same generic code can lead to different checks on the two systems.
| 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 8-speed wet DCT and mainstream seven-speed DCT use different clutch and hydraulic hardware.
Repair Costs
How Much Does a Hyundai i30 Gearbox Repair Cost?
i30 pricing reflects the transmission: standard 7DCT clutch and mechatronic work is separate from the more complex wet 8DCT used by the i30 N.
| 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 - £4k+ | 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: The prices below vary significantly between standard DCT and N DCT hardware.
Diagnosis Before Parts
01
02
03
04
How We Diagnose a Hyundai i30 Gearbox Fault
Identify the gearbox
We identify the i30 generation, engine and whether the vehicle uses 7DCT, N 8DCT or an earlier conventional automatic.
Scan the transmission
Hyundai diagnostics are used to inspect clutch, pressure, temperature, actuator and transmission-control data.
Test the fault area
The fault is reproduced at the load and temperature where it appears, including performance driving symptoms where safe.
Quote the correct repair
We then quote the specific clutch, mechatronic, hydraulic or internal repair supported by the findings.
i30 Gearbox Fault? Speak to a Hyundai Specialist.
Tell us whether the i30 is a standard DCT or i30 N if known, and whether the issue is judder, harsh shifts, slipping, overheating or a warning message.
South-East Coverage
Hyundai i30 Gearbox Repairs Across the South East
Service4Service South-East provides Hyundai i30 7DCT and i30 N 8DCT diagnosis and repair across the South East, together with conventional automatic transmission work on earlier models.
Regional collection and delivery options can be discussed, with established local service pages supporting customers across the South-East network.
More Hyundai gearbox guides:
For the wider Hyundai transmission range, visit our Hyundai gearbox repair page for the South East.
Common Search Questions
Hyundai i30 Gearbox Problems: Straight Answers
Why is my Hyundai i30 DCT juddering at low speed?
On mainstream seven-speed DCT models, clutch wear, adaptation, actuator control and flywheel movement are common causes of pull-away judder.
Is the Hyundai i30 N DCT the same as the normal i30 7DCT?
No. The i30 N uses a higher-capacity eight-speed wet dual-clutch transmission with different clutch, cooling and hydraulic hardware.
What causes an i30 N DCT warning or overheating message?
High clutch temperature, hydraulic-control faults, pressure problems, sensors or internal transmission issues can all trigger protection warnings under load.
Can an i30 DCT mechatronic or control unit be repaired?
Many hydraulic, actuator and electronic faults can be repaired or reconditioned once live data and pressure testing confirm the cause.
How much does a Hyundai i30 DCT repair cost?
The guide table lists standard 7DCT clutch repair around £900–£1,600 and full 7DCT reconditioning around £2k–£4k, while N 8DCT work can reach roughly £3k–£4.5k.
Should I keep driving an i30 with a gearbox warning?
If the car is slipping, overheating, losing gears or remaining in protection mode, avoid unnecessary driving because continued load can increase clutch and internal damage.
Get a Hyundai i30 Gearbox Diagnosis
For an i30 gearbox problem, distinguish conventional automatic, seven-speed DCT and i30 N eight-speed wet DCT before testing the clutch and hydraulic systems.
