ZF 8HP gearbox: faults and reliability

• 1st generation (2008-2013)

  2008–2013 · 8HP45, 8HP55, 8HP65, 8HP70, 8HP90

  With caution

  Cars with this first generation are now around 13-18 years old in 2026; on the BMW 5 Series (F10) there are documented cases of failed mechatronics and of being unable to engage reverse after 120,000-130,000 km, so it is worth checking the gearbox's service history before buying.^[2]

• 2nd generation (2014-2017)

  2014–2017 · 8HP50, 8HP70, 8HP75, 845RE

  Buy

  It is the most widespread version and the one with the most known mileage: in the analyses of several models (BMW X3, BMW X5, Audi A6) gearbox faults are a minority of the total accounts, although occasional jerking is still documented and, less often, mechatronic faults or leaks. It is worth checking the history, but there is no systemic defect that argues against buying.^[3][6][7]

• 3rd generation, with electrification (from 2018)

  since 2018 · 8HP51, 8HP76, 8HP95, 850RE

  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.^[8]

Buy: No known serious faults, or they have already been corrected, in this version. With caution: Worth buying if something specific is verified: history, a replaced part or a completed campaign. Avoid: High risk of a serious fault that is hard to check for or prevent.

1. 1High severityOccasionalFrequency: 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 severityCommonFrequency: 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 severityOccasionalFrequency: 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

Severity colours: low, medium, high, critical. How we rate them

Manufacturer

ZF Friedrichshafen

Family

ZF 8HP: familia de cajas automáticas longitudinales de convertidor de par y 8 velocidades. No debe confundirse con la ZF 9HP transversal (Jeep Compass, Renegade, Cherokee) ni con el EAT6/EAT8 de Aisin que monta PSA/Stellantis: son diseños y fabricantes distintos.

Type

Torque-converter automatic with planetary gearsets, 8-speed, longitudinal mounting

Production

since 2008

Makes

BMW, Audi, Jaguar, Land Rover, Alfa Romeo and Jeep

Technical data^[1]

1. 2008–2013

   1st generation (2008-2013)

   First generation of the gearbox, with variants for torques from around 450 to around 1,000 Nm (8HP45 to 8HP90). It debuted in 2008 in the BMW 7 Series 760Li and quickly spread to the rest of the BMW rear-wheel-drive and xDrive range, and to the higher-powered quattro versions of Audi.^[1]

2. 2014–2017

   2nd generation (2014-2017)

   Generation with which the gearbox reaches Jaguar, Land Rover, Alfa Romeo (Giulia) and Jeep (Grand Cherokee, as the 845RE under Chrysler licence), while BMW and Audi were already using it across the board. It adds torque variants and software adjustments without changing the gearbox's basic architecture.^[1][9][10]

3. since 2018

   3rd generation, with electrification (from 2018)

   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][8][10]