Hyundai/Kia 7-speed DCT reliability: years to avoid, problems & recalls

By CarWhere Research · Updated

Hyundai's 7-speed EcoShift dual-clutch transmission has a documented record concentrated in its first years. Hyundai recalled 2016 Tucsons (16V628) because they could fail to move from a stop in heat, and ran a software campaign for 2016–2017 Tucson hesitation. A court-approved settlement (Wylie v. Hyundai, 2020) covered 2015–2017 Sonata Eco and 2016–2017 Tucson and Veloster DCT models. Hyundai and Kia bulletins describe low-speed clutch judder repairs on later models too.

Hyundai/Kia 7-speed DCT at a glance

Hyundai/Kia 7-speed EcoShift dual-clutch transmission (7DCT): key facts
FactDetail
TypeDual-clutch (DCT)
Forward speeds7
Used byHyundai, Kia
Years in use2015 model year onward (US)
Also known asEcoShift DCT, 7DCT, 7-speed DCT
Transmission-related NHTSA recalls listed1
Warranty extensions / special coverage listed0
Court settlements listed1

What the Hyundai/Kia 7-speed DCT is

The 7-speed DCT is an automated manual transmission with two clutches, one for odd and one for even gears, controlled by a transmission control module. Hyundai calls it the EcoShift Dual Clutch Transmission; Kia's service literature says it may be fitted to models with the 1.6L turbo engine and warns that a shudder sensation under light acceleration from a stop can be a normal characteristic of the design.

In the U.S. it was paired mainly with the 1.6L turbo (and the Elantra Eco's 1.4L turbo) in the Hyundai Sonata Eco and Sonata 1.6T, Tucson, Veloster Turbo, Elantra Eco, Elantra Sport and Elantra GT, Kona, and Kia Optima, Forte and Soul turbo models.

Which vehicles use the Hyundai/Kia 7-speed DCT?

Makes, models and model years equipped with the Hyundai/Kia 7-speed DCT
MakeModelModel yearsNotes
HyundaiSonata Eco / Sonata 1.6T2015–20191.6L turbo; 2015–2017 Sonata Eco named in Hyundai TSB 19-AT-001 and the Wylie settlement[1][2][3]
HyundaiTucson2016–20181.6L turbo trims only; base 2.0L models used a 6-speed automatic[4][5]
HyundaiVeloster Turbo2016–2017; 2019–20211.6L turbo[1][6]
HyundaiElantra Eco (1.4T) / Elantra Sport (1.6T)2017–2018Named in Hyundai TSBs 19-AT-001 and 21-AT-013H[1][7]
HyundaiElantra GT2018–20201.6L turbo[8]
HyundaiKona2018–20211.6L turbo; 2.0L models used a 6-speed automatic[9]
KiaOptima 1.6T2016–2020Gamma 1.6L T-GDI[10][11][12]
KiaSoul Turbo / Forte 1.6T2017–2020Production ranges listed in Kia TSB TRA083[11][12]

Hyundai/Kia 7-speed DCT years to avoid vs. safer years

“Years to avoid” here means the model years with the most documented action — recalls, manufacturer warranty extensions or court settlements — not a prediction about any single vehicle. A car from these years with completed repairs and good records can be a sound buy; one without them deserves a closer look.

Model years with the most documented problems

  • 2016–2017 Hyundai Tucson 1.6T (DCT) — 2016 models were recalled under 16V628, 2016–2017 models received Service Campaign T1B, and both years were in the Wylie settlement class.[5][14][3]
  • 2015–2017 Hyundai Sonata Eco — Covered by the Wylie dual-clutch class settlement and named in Hyundai's DCT clutch-material bulletin 19-AT-001.[3][1]
  • 2016–2017 Hyundai Veloster Turbo (DCT) — Covered by the Wylie settlement and Hyundai's clutch-replacement bulletin 21-AT-013H.[3][7]
  • 2017–2018 Hyundai Elantra Sport and Elantra Eco — Named in Hyundai's low-speed vibration clutch-replacement bulletin 21-AT-013H.[7]

Known Hyundai/Kia 7-speed DCT problems

2016 Tucson could fail to move from a stop (2016)

Hyundai's recall filing (16V628) says certain driving conditions and high temperatures could leave 2016 Tucsons with the DCT unable to move when the accelerator was pressed and released repeatedly, which it attributed to clutch application logic software in the transmission control module. Dealers reprogrammed the TCM free of charge.[5][13]

Reported symptoms

  • Vehicle does not move or moves late after pulling up and pressing the accelerator repeatedly in heat

Low-speed hesitation on 2016–2017 Tucson (Service Campaign T1B) (2016–2017)

Hyundai Service Campaign T1B (TSB 16-01-057, superseded by 17-01-024) updates both the engine and transmission control modules on certain 2016–2017 Tucsons with the 1.6L turbo and 7-speed DCT to address 'a slight hesitation at low speeds' and improve low-speed response. Dealers were required to perform it before delivery and whenever an affected vehicle was in for service.[14][15]

Reported symptoms

  • Hesitation when pulling away or at low speeds
  • Check-engine light with code P0128 (also addressed by the update)

Low-speed clutch judder and vibration repaired with new clutches and TCU software (2016–2020)

Hyundai TSB 21-AT-013H says certain 2017–2018 Elantra Sport and Elantra 1.4T and 2016–2017 Veloster 1.6T models 'may exhibit abnormal vibration at low speeds' and gives a procedure to replace the double clutch and update the TCU. Kia TSB TRA083 covers clutch judder when accelerating from a stop on listed 2016–2020 Optima, Soul and Forte production ranges, with dual-clutch replacement and a TCU upgrade; TRA098 adds an anti-judder software update for the Optima. Hyundai TSB 19-AT-001 identifies replacement transmissions built with updated 'F850' clutch material.[7][11][10][1]

Reported symptoms

  • Body vibration or shudder when creeping or accelerating from a stop
  • Rough engagement in stop-and-go traffic

2016–2017 Tucson idle-speed code may call for clutch replacement (2016–2017)

Hyundai TSB 21-AT-005H covers 2016–2017 Tucsons with the 1.6L turbo and 7-speed DCT that set code P0507 (idle speed higher than expected). It says the TCU software ID must be checked to decide which updates are needed and whether the double clutch must be replaced.[16]

Reported symptoms

  • Check-engine light with code P0507

Hyundai/Kia 7-speed DCT recalls

Transmission-related NHTSA safety recalls (campaign numbers link to NHTSA)
NHTSA campaignReportedVehiclesSummary
16V6282016-08-302016 Hyundai Tucson with 7-speed EcoShift DCT, built May 20, 2015–May 31, 201641,000 vehiclesIn certain conditions and high temperatures the vehicle may not move if the accelerator is pressed and released repeatedly; dealers update the transmission control module software.[5]

Recall repairs are free at franchised dealers regardless of age or owner. Check a specific car by its 17-digit VIN at nhtsa.gov/recalls or with the CarWhere recall check.

Class-action settlements involving the Hyundai/Kia 7-speed DCT

  • Wylie, et al. v. Hyundai Motor America, No. 8:16-cv-02102-DOC-JCG[17][3]

    U.S. District Court for the Central District of California

    Vehicles: 2015–2017 Hyundai Sonata Eco, 2016–2017 Tucson and 2016–2017 Veloster equipped with a dual-clutch transmission

    Final approval granted March 2, 2020. Per the settlement's arbitration administrator, remedies included reimbursement of paid DCT repair and related rental/towing costs (claims due Feb. 22, 2020), compensation for repeat dealer visits for DCT symptoms within 7 years/100,000 miles of first delivery ($225 per visit from the second, up to $675, or rebate certificates up to $1,350), and mileage-based compensation for owners who sold or traded the vehicle because of DCT complaints.

Summaries describe the public settlement record only; settlements are not findings of fault.

Buying a used car with the Hyundai/Kia 7-speed DCT: what to check

  1. Run the VIN through NHTSA's recall lookup; on a 2016 Tucson confirm recall 16V628 (Hyundai campaign 149) is complete.
  2. Ask a Hyundai or Kia dealer to check open campaigns (for example Tucson Service Campaign T1B) and the current transmission software level.
  3. Ask for repair records showing any double-clutch replacement; Hyundai's bulletins identify updated F850 clutch material by transmission part number.
  4. On a test drive, creep forward below 5 mph and pull away gently from a stop, including uphill; Kia's bulletin uses this kind of creep test to identify clutch judder.
  5. Watch for DCT warning messages such as clutch over-temperature in stop-and-go traffic, which Kia's guide describes.

Related research

Year-by-year verdicts for models with the Hyundai/Kia 7-speed DCT

Engines and model known-issues pages

Compare other transmissions

All transmissions: reliability and years to avoid

Frequently asked questions

Which cars have the Hyundai/Kia 7-speed dual-clutch?

It was mainly paired with turbocharged engines: the Hyundai Sonata Eco and Sonata 1.6T, Tucson 1.6T, Veloster Turbo, Elantra Eco, Sport and GT, Kona 1.6T, and Kia Optima, Forte and Soul turbo models. Non-turbo Tucson and Kona models used a 6-speed automatic instead.

Was the Hyundai DCT recalled?

Yes. Recall 16V628 covered about 41,000 2016 Tucsons built May 2015 through May 2016, which could fail to move when the accelerator was pressed and released repeatedly in high heat. Dealers reprogrammed the transmission control module. Hyundai also ran Service Campaign T1B for 2016–2017 Tucson low-speed hesitation.

Was there a class-action settlement for the Hyundai dual-clutch?

Yes. Wylie v. Hyundai Motor America received final approval on March 2, 2020, covering 2015–2017 Sonata Eco and 2016–2017 Tucson and Veloster DCT models. It offered reimbursement for paid DCT repairs and compensation for repeat dealer visits within 7 years/100,000 miles of first delivery.

Is shudder from a stop normal on this transmission?

Kia's service guidance says a mild shudder under light acceleration from a stop can be a normal DCT characteristic, similar to engaging a manual clutch. Separately, Hyundai and Kia bulletins describe abnormal clutch judder on certain models that is repaired by replacing the dual-clutch assembly and updating software.

What do the DCT warning messages mean?

Kia's DCT guide says a push-brake-pedal warning can appear when the accelerator is used to hold the car on a hill, and a clutch high-temperature warning can appear in uphill stop-and-go driving. Kia advises pulling over and idling in Park until the message clears; if ignored, a clutch over-heat mode disengages the clutches for about 20 minutes.

How CarWhere compiled this page

Every problem, recall, warranty extension and settlement above is CarWhere’s own summary of a primary record — NHTSA recall campaigns, manufacturer service bulletins and warranty-extension notices filed with NHTSA, manufacturer press material, and court or settlement-administrator records — and is numbered to its source below. We list a model year under “years to avoid” only when a manufacturer, regulator or court record ties it to the transmission. Complaint counts come from NHTSA’s public owner-complaint data, counted once per complaint. We do not estimate failure rates or repair costs. See also the years-to-avoid methodology.

Sources

Descriptions are CarWhere’s own summaries of the records below. Recall details are as reported to NHTSA by the manufacturer.

  1. Hyundai TSB 19-AT-001: TCU Software Update When Replacing 7-Speed DCT (F850 clutch material) — Hyundai Motor America via NHTSA
  2. fueleconomy.gov: 2018 Hyundai Sonata options (Auto (AM7) 1.6L turbo) — U.S. DOE / EPA (fueleconomy.gov)
  3. BBB National Programs Arbitration Rules and Summary of Eligibility and Remedies – Hyundai Dual Clutch Transmission Class Action Settlement (Wylie v. Hyundai) — BBB National Programs (settlement arbitration administrator)
  4. fueleconomy.gov: 2017 Hyundai Tucson FWD options (Auto (AM7) 1.6L turbo; Auto (S6) 2.0L) — U.S. DOE / EPA (fueleconomy.gov)
  5. NHTSA recall 16V628: 2016 Hyundai Tucson 7-speed EcoShift DCT may not move from a stop — NHTSA
  6. fueleconomy.gov: 2020 Hyundai Veloster options (Auto (AM7) 1.6L turbo) — U.S. DOE / EPA (fueleconomy.gov)
  7. Hyundai TSB 21-AT-013H: Dual Clutch Transmission Clutch Replacement and TCU Software Update — Hyundai Motor America via NHTSA
  8. fueleconomy.gov: 2019 Hyundai Elantra GT options (Auto (AM7) 1.6L turbo) — U.S. DOE / EPA (fueleconomy.gov)
  9. fueleconomy.gov: 2019 Hyundai Kona FWD options (Auto (AM7) 1.6L turbo) — U.S. DOE / EPA (fueleconomy.gov)
  10. Kia TSB TRA098: 7-Speed DCT Anti-Judder Logic Improvement, 2016–2020 Optima 1.6T — Kia America via NHTSA
  11. Kia TSB TRA083: 7-Speed DCT Judder Inspection and Dual Clutch Assembly Replacement (2016–2020MY) — Kia America via NHTSA
  12. Kia TSB PS481: Dual Clutch Transmission (DCT) Characteristics — Kia Motors America via NHTSA
  13. Part 573 Safety Recall Report 16V-628 (Hyundai) – clutch application logic software — Hyundai Motor Company via NHTSA
  14. Hyundai TSB 17-01-024: DCT Control Logic Update & P0128 DTC Logic Update (Service Campaign T1B), 2016–2017 Tucson — Hyundai Motor America via NHTSA
  15. Hyundai dealer notice: Service Campaign T1B – Tucson DCT Control Logic Update (Nov. 14, 2016) — Hyundai Motor America via NHTSA
  16. Hyundai TSB 21-AT-005H: Tucson 1.6L Turbo DTC P0507 — Hyundai Motor America via NHTSA
  17. Nicholas Wylie v. Hyundai Motor America, No. 8:16-cv-02102 (docket) — U.S. District Court for the Central District of California (via CourtListener)

Independent reference compiled by CarWhere Research — not affiliated with or endorsed by any manufacturer or transmission supplier. Product and model names are trademarks of their owners.