Hybrid system Fiat: problems by model and engine

Documented faults, from most to least important

Severity × frequency. Below each one, the Fiat models it appears in.

- High severityFrequency: OccasionalFiat 600Jerking, lock-ups and risk of early failure in the e-DCS6 hybrid gearboxYes: fiches-auto.fr documents that the e-DCS6 hybrid dual-clutch gearbox in the Fiat 600 can produce jerking and lock-ups, with cases of early failure, and several owners have reported transmission faults; the source itself notes that this recently introduced gearbox 'has yet to prove its reliability'.
- Critical severityFrequency: RareFiat 500Risk of the auxiliary battery overheating on mild-hybrid versions (October 2022 campaign)In October 2022 Fiat opened a safety campaign for the mild-hybrid versions of the 500 over a hybrid system deficiency with a risk of the auxiliary battery overheating. The source consulted does not detail the production period or the number of units affected.
- Critical severityFrequency: RareFiat TipoRisk of overheating of the MHEV system battery (2023 campaign)Fiat opened a campaign for the mild-hybrid (MHEV) versions of the Tipo built between 18 November 2022 and 12 May 2023, over a defect in the battery's pressure-relief valve, with a risk of loss of function and overheating.

By Fiat model

Open yours to see only the faults that affect it, by engine and by year.

Frequently asked questions

What faults with the hybrid system do Fiat cars have?

In 3 models from Fiat there are 3 documented faults with the hybrid system. The most important: jerking, lock-ups and risk of early failure in the e-DCS6 hybrid gearbox, risk of the auxiliary battery overheating on mild-hybrid versions (October 2022 campaign) and risk of overheating of the MHEV system battery (2023 campaign). Each fault has its own page with the affected years and versions, the symptoms and the repair cost.

Which Fiat models have the most problems with the hybrid system?

Fiat 500 (1 fault), Fiat Tipo (1 fault) and Fiat 600 (1 fault).