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DC4DW6

EDC6 (6-speed: DC4 dry or DW6 wet) gearbox: faults and reliability

Renault EDC (Efficient Dual Clutch): DC4/EDC6 de Getrag and EDC7 version

With caution

It is the version with the most documented complaints of clutch wear, low-speed judder and complete failures, especially in its dry-clutch variant (DC4); before buying, check the gearbox history and take a demanding test drive both cold and warm.[1][2]

Years
since 2010
Power
No data
Faults that affect it
4
3 of high or critical severity
Cars that use it
7
in our database

10 sourcesHow we work

What changes in this version

First generation of the EDC, introduced in spring 2010 in the Renault Scénic III with the 1.5 dCi 110 diesel: it was the brand's first dual-clutch gearbox. Two different designs coexist under the same EDC6 trade name: the dry-clutch DC4, for engines under 250 Nm (most entry-level TCe and dCi engines), and the wet-clutch DW6, for higher-torque versions. Over the years it spread to most Renault compact cars and SUVs, and in 2021 it reached a Dacia for the first time, the facelifted Duster II, with the 1.3 TCe 150.[1][3][4]

Engine codes of this version: DC4, DW6.

Faults of the DC4 gearbox

The documented engine faults that affect this version and its years, from most to least important.

  1. 1High severityOccasionalFrequency: OccasionalTransmissionEDC gearbox overheating and safety neutralYes: several owners document that the EDC gearbox can drop into neutral or lose its gears when it overheats under sustained load, and Renault even updated the EDC7 (DW5) gearbox software of the first Mégane IV GT cars because the overheating increased the risk of an accident.Repair (garage): €2,100
  2. 2High severityOccasionalFrequency: OccasionalElectronicsControl electronics fault: "check gearbox" warning and loss of gearsYes: a fault in the sensors or switches that tell the control unit the position of each clutch (the "manocontact") can make the EDC gearbox lose the gears associated with one of the two clutches, for example only the even gears or only reverse, with a "check gearbox" warning on the dashboard.
  3. 3Medium severityCommonFrequency: CommonClutchPremature dry clutch wear and low-speed judder (EDC6/DC4)Yes: the dry-clutch EDC6 (DC4) is known for juddering and running roughly at low speed, and its clutch wears out sooner than one in a wet gearbox; several owners document clutch and complete gearbox replacements across different Renault models since 2010.
  4. 4High severityRareFrequency: RareLubricationOil leak from the EDC output shaft sealOne documented case (Renault Captur 1.2 TCe 120, failure at 48,000 km) describes an oil leak from the output shaft seal ("joint spy") of the EDC gearbox that ended in a complete automatic gearbox failure; we have not found other cases with the same exact diagnosis.

Cars fitted with the DC4 gearbox

Open each car to see all its faults with this engine and what to check before buying it.

Dacia

Renault

Frequently asked questions

Is the DC4 gearbox reliable?

Our verdict is “With caution”. It is the version with the most documented complaints of clutch wear, low-speed judder and complete failures, especially in its dry-clutch variant (DC4); before buying, check the gearbox history and take a demanding test drive both cold and warm.[1][2]

What faults does the DC4 gearbox have?

The documented ones that affect this version, by importance: EDC gearbox overheating and safety neutral (high severity), control electronics fault: "check gearbox" warning and loss of gears (high severity), premature dry clutch wear and low-speed judder (EDC6/DC4) (medium severity) and oil leak from the EDC output shaft seal (high severity).

Which cars use the DC4 gearbox?

Renault Clio IV (2012–2019), Renault Captur I (2013–2019), Renault Mégane III (2013–2016), Renault Mégane IV (2016–2023), Renault Kadjar (2015–2022), Renault Scénic III (2010–2016) and Dacia Duster II (2021–2024).[1][3][4][5][6][7][8][9][10]

Are you buying a car with the DC4 gearbox?

We will put you in touch with a partner only if you authorise it in the form.

Do you have a car with this engine? Tell us which faults you have had and at how many kilometres. Report your fault.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. 1.Fiabilité de la boîte EDC : problèmes en série ?fiches-auto.fr · Technical documentation · published February 2020 · consulted 27 September 2026 · in French
  2. 2.Essai Renault Scénic 4 dCi 110 EDC7 : le test du Scénic automatiqueL'Argus · Motoring press · published September 2016 · consulted 27 September 2026 · in French
  3. 3.Renault Scénic IIIWikipédia (fr) · Other source · consulted 27 September 2026 · in French
  4. 4.Dacia Duster IIWikipédia (fr) · Other source · consulted 27 September 2026 · in French
  5. 5.Renault Clio IVWikipédia (fr) · Other source · consulted 27 September 2026 · in French
  6. 6.Renault Captur IWikipédia (fr) · Other source · consulted 27 September 2026 · in French
  7. 7.Renault Mégane IIIWikipédia (fr) · Other source · consulted 27 September 2026 · in French
  8. 8.Renault Mégane IVWikipédia (fr) · Other source · consulted 27 September 2026 · in French
  9. 9.FACUA alerta de la llamada a revisión de los Renault Megane IV GT por un problema en la caja de cambiosFACUA · Consumer association · published 26 April 2017 · consulted 27 September 2026 · in Spanish
  10. 10.Renault KadjarWikipédia (fr) · Other source · consulted 27 September 2026 · in French