2014 Fiat 500L diesel: common problems and MOT failures
What MOT testers find on the diesel Fiat 500L first registered in 2014 (diesel cars only): we looked at the 16,191 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.
What goes wrong more than usual on a 2014 Fiat 500L diesel?
Parts flagged at MOT more often on the 2014 Fiat 500L diesel than on all cars registered in 2014.
- Suspension arm bushes and joints1.6× usualFiat 500L11.2% All 2014 cars7%
Failed outright at MOT: 5.5%, against 1.5% of all 2014 cars. The rest were advisories or minor defects.
Rough price £120–£180 (one arm) ClickMechanicAt the viewing: Listen for clunks over bumps and feel for the steering wandering. Worn arm bushes show as cracked rubber near the wheels.
- Track rod ends1.9× usualFiat 500L7.5% All 2014 cars3.9%
Failed outright at MOT: 4.5%, against 2% of all 2014 cars. The rest were advisories or minor defects.
Rough price £50–£150 (one end, plus about £30–£50 if it needs a wheel alignment) ClickMechanicAt the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.
- Engine oil leaks2× usualFiat 500L6.4% All 2014 cars3.2%
Failed outright at MOT: 0.2%, against 0.1% of all 2014 cars. The rest were advisories or minor defects.
Rough price £80–£600 our estimateAt the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.
- Steering rack inner joints3.2× usualFiat 500L4.2% All 2014 cars1.3%
Failed outright at MOT: 0%, against 0% of all 2014 cars. The rest were advisories or minor defects.
Rough price £100–£450 our estimateAt the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.
Common 2014 Fiat 500L diesel MOT failures and advisories
The share of 2014 Fiat 500L diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres34% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Brakes32% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Suspension32% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Lights and electrics16% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Wipers, windscreen and mirrors8% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Oil and fluid leaks7% of testsRough price £80–£600
At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.
Questions to ask the seller before buying a 2014 Fiat 500L diesel
Ask before you travel to see it. A seller who knows the car will have answers, and receipts.
- Any recent work on the suspension arm bushes and joints? (Flagged at MOT 1.6× as often on the 2014 Fiat 500L diesel as on other cars the same age.)
- Any recent work on the track rod ends? (Flagged at MOT 1.9× as often on the 2014 Fiat 500L diesel as on other cars the same age.)
- Any recent work on the engine oil leaks? (Flagged at MOT 2× as often on the 2014 Fiat 500L diesel as on other cars the same age.)
- Can I see the service history and receipts for any big jobs?
Looking at a Fiat 500L?
Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.
Other years
Every year of the Fiat 500L compared
| Year | MOT tests | Most flagged |
|---|---|---|
| 2021 | 369 | Tyres 22% |
| 2020 | 192 | Tyres 24% |
| 2019 | 484 | Tyres 25% |
| 2018 | 1,784 | Tyres 29% |
| 2017 | 2,616 | Tyres 32% |
| 2016 | 4,831 | Tyres 31% |
| 2015 | 8,853 | Tyres 33% |
| 2013 | 12,338 | Tyres 34% |
Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Fiat 500L cars first registered in 2014. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score