MajorCommonTransmission

Kia Sorento: 8DCT Dual-Clutch Transmission Clutch Shudder and Low-Speed Judder

8DCT Dual-Clutch Transmission Clutch Shudder and Low-Speed Judder is a common transmission fault on the Kia Sorento on the 2020–2024 cars, and we rate it major. Putting it right costs $350 to $5,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 29 documented faults on the Kia Sorento.

Vehicle: Kia Sorento
Only on: plug-in
Engine: 1.6L
Years: 2020–2024
Fuel: diesel
Gearbox: dct
System: Transmission

This page covers the Kia Sorento as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Kia Sorento faults29 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Clutch yet. We would rather show none than show a picture of a different part.

What goes wrong

The 8-speed dry dual-clutch transmission (8DCT) paired with the G4KH 1.6T hybrid and PHEV drivetrain exhibits clutch shudder during low-speed engagement, particularly when pulling away from rest or in slow-moving traffic. The dry clutch packs are sensitive to heat cycles and contamination, and the engagement software calibration has required multiple software revisions. The shudder can progress from occasional vibration to chronic judder. Kia issued software updates (TCU recalibration) and, in persistent cases, clutch pack replacement. Documented via NHTSA complaints and widespread owner reports on AU/US 2021-2024 Sorento hybrid/PHEV.

What you would notice

Vibration or shuddering through the body when pulling away from rest at low speed
Hesitation or surge at 10-30 km/h during light throttle
Judder felt most strongly on slight uphill starts or in slow traffic
Occasional transmission warning light or P0741/P0742 clutch slip codes
Clunky or abrupt 1st-to-2nd gear change at low engine load

How to check it

Where to look. 8-speed dual-clutch gearbox unit, integrated at front of driveline — clutch pack access requires transmission removal

Test-drive the vehicle in slow traffic or a car park. Apply gentle throttle from a standstill and feel for vibration through the seat and steering wheel at 5-20 km/h. Repeat on a slight uphill incline which loads the clutch more heavily. Check for any hesitation or surging during 1-2 gear changes. Ask dealer to check for open TCU software updates.

Parts involved: Clutch.

What it costs to put right

$350 to $5,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

“Has the transmission software (TCU) been updated at a Kia dealer for the clutch shudder issue?”
“Has the vehicle ever had the clutch pack replaced under warranty, and does any shudder remain at low speed?”
“Are there any stored transmission fault codes, and has the dealer ever flagged the 8DCT in a service visit?”

Now check the Kia Sorento you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Kia Sorento buyer questions

Is 8dct dual-clutch transmission clutch shudder and low-speed judder serious on a Kia Sorento?

We rate it major and common on the Kia Sorento. The 8-speed dry dual-clutch transmission (8DCT) paired with the G4KH 1.6T hybrid and PHEV drivetrain exhibits clutch shudder during low-speed engagement, particularly when pulling away from rest or in slow-moving traffic. The dry clutch packs are sensitive to heat cycles and contamination, and the engagement software calibration has required multiple software revisions. The shudder can progress from occasional vibration to chronic judder. Kia issued software updates (TCU recalibration) and, in persistent cases, clutch pack replacement. Documented via NHTSA complaints and widespread owner reports on AU/US 2021-2024 Sorento hybrid/PHEV.

How much does it cost to fix on a Kia Sorento?

$350 to $5,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Kia Sorento years are affected?

Our research records this fault on the 2020–2024 Kia Sorento. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.