Used car guide

2009 Fiat 500 diesel: common problems and MOT failures

What MOT testers find on the diesel Fiat 500 first registered in 2009 (diesel cars only): we looked at the 2,790 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

2,790MOTs of 2009 diesel cars, done in 2023–2025
53%pass first time (all 2009 cars: 59%)
6,400typical miles a year
2.5×the usual rate for engine oil leaks

What goes wrong more than usual on a 2009 Fiat 500 diesel?

Parts flagged at MOT more often on the 2009 Fiat 500 diesel than on all cars registered in 2009.

  • Engine oil leaks2.5× usual
    Fiat 500
    22.9% All 2009 cars
    9%

    Failed outright at MOT: 0.8%, against 0.3% of all 2009 cars. The rest were advisories or minor defects.

    Rough price £80–£600 our estimate

    At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

  • Shock absorbers2.9× usual
    Fiat 500
    20.8% All 2009 cars
    7.1%

    Failed outright at MOT: 7.2%, against 2% of all 2009 cars. The rest were advisories or minor defects.

    Rough price £200–£300 (pair, average rear to front) ClickMechanic

    At the viewing: Push down hard on each corner. It should bounce once and settle. Look for oil on the shock absorber body.

  • Coil springs1.7× usual
    Fiat 500
    19.3% All 2009 cars
    11.4%

    Failed outright at MOT: 1%, against 4.2% of all 2009 cars. The rest were advisories or minor defects.

    Rough price £175–£400 (pair, one axle) ClickMechanic

    At the viewing: Look behind each wheel for a snapped spring coil, and listen for a clunk or twang when turning the wheel lock to lock with the car stopped.

  • Exhaust system1.8× usual
    Fiat 500
    13.9% All 2009 cars
    7.9%

    Failed outright at MOT: 4.7%, against 2.2% of all 2009 cars. The rest were advisories or minor defects.

    Rough price £100–£500 (pipe or section) ClickMechanic

    At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

Better than most

Rigid brake pipes: 1.6% here, against 7.1% of all 2009 cars. Brake pads: 3.9% here, against 8.9% of all 2009 cars.

Common 2009 Fiat 500 diesel MOT failures and advisories

The share of 2009 Fiat 500 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    56% 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.

  • Tyres
    35% 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.

  • Brakes
    34% 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.

  • Lights and electrics
    32% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Oil and fluid leaks
    26% 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.

  • Exhaust and emissions
    16% of testsRough price £100–£1,200

    At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

Known faults on the 2009 Fiat 500 diesel

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

  • Worn clutch (ex-learner cars)

    Manual gearbox

    Lots of 500s were driving school cars, which can wear the clutch early. Owners also report costly gearbox faults.

    At the viewing: On the test drive, accelerate hard in a high gear. If the revs rise without the car speeding up, the clutch is slipping. Notchy changes are another warning sign.

    If it needs doing: Clutch replacement, about £250–£600. ClickMechanic

    Source: What Car?: used Fiat 500 advice

  • Several recalls by build date

    All engines

    There have been recalls for driveshafts, brakes, steering and lights, plus a fuel leak that could stall early cars built in autumn 2008.

    At the viewing: Ask a Fiat dealer to check the VIN for outstanding recalls.

    Source: What Car?: used Fiat 500 advice

  • Warning lights and electrical faults

    All engines

    Owners often report dashboard warning lights and electrical gremlins.

    At the viewing: Make sure every warning light comes on and then goes out at start-up, and test the air con and electrics.

    Source: What Car?: used Fiat 500 advice

Questions to ask the seller before buying a 2009 Fiat 500 diesel

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. Has the clutch been replaced, and was it ever a driving school car?
  2. Has all the recall work been done?
  3. Have there been any electrical faults?
  4. Any recent work on the engine oil leaks? (Flagged at MOT 2.5× as often on the 2009 Fiat 500 diesel as on other cars the same age.)
  5. Any recent work on the shock absorbers? (Flagged at MOT 2.9× as often on the 2009 Fiat 500 diesel as on other cars the same age.)
  6. Any recent work on the coil springs? (Flagged at MOT 1.7× as often on the 2009 Fiat 500 diesel as on other cars the same age.)

Looking at a Fiat 500?

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 500 compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023736Tyres 14%
202212,661Tyres 23%
202124,941Tyres 26%
202041,358Tyres 26%
201963,151Tyres 28%
201869,716Tyres 32%
201767,138Tyres 33%
201692,729Suspension 35%
2015109,474Suspension 42%
2014120,269Suspension 43%
2013103,909Suspension 44%
201282,129Suspension 49%
201160,514Suspension 49%
201060,893Suspension 51%
200832,374Suspension 53%
2007373Suspension 51%
1973–Too few tests
1972–Too few tests
1971–Too few tests
1970–Too few tests
1969–Too few tests
1968–Too few tests
1967–Too few tests
1966–Too few tests
1965–Too few tests
1964–Too few tests
1963–Too few tests
1938–Too few tests
1937–Too few tests

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 500 cars first registered in 2009. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score