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MotorFiable

8HP518HP768HP95850RE

3rd generation, with electrification (from 2018) gearbox: faults and reliability

ZF 8HP (caja automática de convertidor de par, 8 velocidades) version

With caution

There is less accumulated mileage and fewer accounts than with the earlier versions, and on plug-in hybrid models there are added electronic warnings shared between the engine and the gearbox that complicate diagnosis. There are no known systemic defects, but there is less track record to confirm it.[1]

Years
since 2018
Power
No data
Faults that affect it
3
1 of high or critical severity
Cars that use it
10
in our database

11 sourcesHow we work

What changes in this version

Adds mild-hybrid and plug-in hybrid versions -for example, the Land Rover Range Rover Sport P400e- and new higher-torque variants for high-performance engines; Jeep calls it the 850RE on the Grand Cherokee from 2018.[1][2][3]

Engine codes of this version: 8HP51, 8HP76, 8HP95, 850RE.

Faults of the 8HP51 gearbox

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

  1. 1High severityFrequency: OccasionalElectronicsMechatronic failure as the gearbox ages (sometimes with reverse)Yes, although in a minority of cases: there are documented ZF 8HP mechatronic failures on BMW after 120,000-130,000 km, costing €1,400 to €3,500, and also control unit or electronic selector faults on Audi and Land Rover.Repair: €1,400–€3,500
  2. 2Medium severityFrequency: CommonTransmissionJerking and hesitation when changing gear, sometimes needing reprogrammingYes: on BMW, Audi, Jaguar and Alfa Romeo there are accounts of jerking, hesitation or harsh shifts with the ZF 8HP. It is usually due to ageing oil or the calibration of the mechatronics, and the dealer often fixes it -not always first time- by reprogramming the gearbox control unit.
  3. 3Medium severityFrequency: OccasionalLubricationOil leaks from the gearbox gaskets or sumpYes: on the BMW 1 Series and the Jaguar F-Pace there are accounts of oil leaks from the ZF 8HP gearbox gaskets, in one case already at 40,000 km. If it is not repaired soon, the loss of pressure can speed up internal wear and lead to the jerking or mechatronic failure of the related faults.Repair (garage): €1,000–€2,000

Cars fitted with the 8HP51 gearbox

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

Alfa Romeo

Audi

  • Audi A4 B9A4 Avant 40 TDI quattro tiptronic · A4 45 TFSI quattro tiptronicsince 2015[7]
  • Audi Q5 IIQ5 40 TDI quattro tiptronic · Q5 45 TFSI quattro tiptronic2017–2024[8]

BMW

Jaguar

Jeep

Land Rover

Frequently asked questions

Is the 8HP51 gearbox reliable?

Our verdict is “With caution”. There is less accumulated mileage and fewer accounts than with the earlier versions, and on plug-in hybrid models there are added electronic warnings shared between the engine and the gearbox that complicate diagnosis. There are no known systemic defects, but there is less track record to confirm it.[1]

What faults does the 8HP51 gearbox have?

The documented ones that affect this version, by importance: mechatronic failure as the gearbox ages (sometimes with reverse) (high severity), jerking and hesitation when changing gear, sometimes needing reprogramming (medium severity) and oil leaks from the gearbox gaskets or sump (medium severity).

Which cars use the 8HP51 gearbox?

BMW Serie 3 G20 (since 2019), BMW Serie 5 G30 (2017–2023), BMW X3 G01 (2017–2024), Audi A4 B9 (since 2015), Audi Q5 II (2017–2024), Jaguar XE (since 2015), Jaguar F-Pace (since 2016), Alfa Romeo Giulia (since 2016), Land Rover Range Rover Sport II (2013–2022) and Jeep Grand Cherokee WK2 (2014–2021).[1][2][3][4][5][6][7][8][9][10][11]

Are you buying a car with the 8HP51 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. Fiabilité Land Rover Range Rover Sport (2013-2022), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  2. ZF 8HP transmissionWikipedia (en) · Other source · consulted 27 September 2026
  3. Jeep Grand Cherokee (WK2)Wikipedia (en) · Other source · consulted 27 September 2026
  4. Fiabilité BMW Série 3 (2012-2018), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  5. Fiabilité BMW Série 5 (2010-2016), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  6. Fiabilité BMW X3 (2010-2017), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  7. Fiabilité Audi A4 (2015), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  8. Fiabilité Audi Q5 2 (2017-2025), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  9. Fiabilité Jaguar XE, pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  10. Fiabilité Jaguar F-Pace, pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
  11. Fiabilité Alfa Romeo Giulia, pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French