IsItAGoodCar
Reliability Guide

Common Problems with the
2016–2021 Fiat 500 Facelift / Hybrid

We've identified 4 known issues that can affect the 2016–2021 Fiat 500 Facelift / Hybrid. 1 of these are serious faults that could be expensive to repair.

4
Known Issues
1
Serious
3
Moderate
0
Minor

All Known Issues

MultiAir / TwinAir Actuator Failure

SeriousEngine

The hydraulic valve control system is sensitive to oil quality. Sludge build-up causes the unit to fail, requiring full replacement.

Est. Repair Cost: £600–£1,200
Warning Signs:

Rough running/misfire, Check Engine light, Loss of power

What to Inspect:
  • Check for annual oil changes using correct spec oil
  • Listen for "tappety" noises from the top of the engine
Verified by IsItAGoodCar Research Team

Tailgate Wiring Loom Damage

ModerateElectrics & Electronics

Wires inside the rubber boot between the body and tailgate snap over time due to repeated opening.

Est. Repair Cost: £100–£250
Warning Signs:

Rear wiper working on its own, Number plate lights fail, Boot won't unlock

What to Inspect:
  • Test every rear electrical component while moving the tailgate
Verified by IsItAGoodCar Research Team

Front suspension bush and ball-joint wear

ModerateSuspension & Chassis

Front suspension bushes and ball joints wear prematurely on the facelifted 500, causing knocking over bumps and vague steering. The bumper often needs removing to access the bushes, pushing up labour costs.

Est. Repair Cost: £180–£450
Warning Signs:

Knocking over speed bumps, Vague or loose steering feel, Uneven front tyre wear

What to Inspect:
  • Inspect front tyres for inner-edge wear
  • Drive over rough surfaces at low speed
  • Check MOT history for front suspension advisories
Verified by IsItAGoodCar Research Team

Coolant reservoir cracking and TwinAir oil weep

ModerateEngine

The plastic coolant reservoir can crack and cause slow coolant loss, while the 0.9 TwinAir engine is prone to oil seeping from the timing cover area due to sealing issues. Both are easy to miss but can cause serious damage if ignored.

Est. Repair Cost: £100–£600
Warning Signs:

Low coolant warning, Sweet smell from engine bay, Oily patches under the front of the car, Burning oil smell when driving

What to Inspect:
  • Inspect coolant reservoir for hairline cracks
  • Check the front of the engine for oil residue
  • Ask about coolant top-up history
Verified by IsItAGoodCar Research Team

Buying Tips for 2016–2021 Fiat 500 Facelift / Hybrid

  • Check the tailgate wiring loom; it often frays in the rubber gaiter causing electrical chaos with rear wipers and number plate lights.
  • On TwinAir models, check for high-quality oil service history to protect the turbo and MultiAir actuator.
  • Test the Uconnect screen for "ghost touching" or unresponsive areas; software updates may be needed.
  • Inspect front suspension bushes and ball joints—they wear prematurely and cause knocking over speed bumps.
  • Check the coolant reservoir for cracks—slow coolant loss is a common issue on the 1.2 and TwinAir engines.
  • Verify the stop-start system operates correctly; it is often the first thing to fail when the battery weakens.
2022–2024
Check a 2016–2021 Fiat 500 Facelift / Hybrid by Registration