Used car guide

2018 Peugeot 208 diesel: common problems and MOT failures

What MOT testers find on the diesel Peugeot 208 first registered in 2018 (diesel cars only): we looked at the 3,972 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

3,972MOTs of 2018 diesel cars, done in 2023–2025
73%pass first time (all 2018 cars: 83%)
9,600typical miles a year
10.6×the usual rate for number plate lights

What goes wrong more than usual on a 2018 Peugeot 208 diesel?

Parts flagged at MOT more often on the 2018 Peugeot 208 diesel than on all cars registered in 2018.

  • Number plate lights10.6× usual
    Peugeot 208
    14.9% All 2018 cars
    1.4%

    Failed outright at MOT: 6.1%, against 0.5% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £5–£40 our estimate

    At the viewing: Check the number plate lights work and the plates are clean and legal.

  • Exhaust system16.9× usual
    Peugeot 208
    13.5% All 2018 cars
    0.8%

    Failed outright at MOT: 2.3%, against 0.2% of all 2018 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.

  • Brake discs2× usual
    Peugeot 208
    19.9% All 2018 cars
    9.8%

    Failed outright at MOT: 2.2%, against 0.5% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £150–£350 our estimate

    At the viewing: Look through the wheel at the brake disc: a deep lip at the edge or heavy scoring means they're worn. Feel for judder when braking.

  • Headlights5× usual
    Peugeot 208
    5% All 2018 cars
    1%

    Failed outright at MOT: 4.8%, against 0.9% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £40–£400 our estimate

    At the viewing: Check both headlights on dipped and full beam, and look for cloudy or cracked lenses.

  • Suspension arm bushes and joints2.8× usual
    Peugeot 208
    6.4% All 2018 cars
    2.3%

    Failed outright at MOT: 0.8%, against 0.4% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £120–£180 (one arm) ClickMechanic

    At the viewing: Listen for clunks over bumps and feel for the steering wandering. Worn arm bushes show as cracked rubber near the wheels.

Common 2018 Peugeot 208 diesel MOT failures and advisories

The share of 2018 Peugeot 208 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    29% 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
    26% 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
    25% of testsRough price £10–£80

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

  • Exhaust and emissions
    13% 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.

  • Suspension
    11% 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.

  • Wipers, windscreen and mirrors
    5% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

Known faults on the 2018 Peugeot 208 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.

Questions to ask the seller before buying a 2018 Peugeot 208 diesel

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

  1. Any recent work on the number plate lights? (Flagged at MOT 10.6× as often on the 2018 Peugeot 208 diesel as on other cars the same age.)
  2. Any recent work on the exhaust system? (Flagged at MOT 16.9× as often on the 2018 Peugeot 208 diesel as on other cars the same age.)
  3. Any recent work on the brake discs? (Flagged at MOT 2× as often on the 2018 Peugeot 208 diesel as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a Peugeot 208?

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 Peugeot 208 compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023850Tyres 9%
202218,021Tyres 23%
202129,015Tyres 25%
202039,222Tyres 26%
201950,430Tyres 29%
201752,183Tyres 30%
201676,412Tyres 30%
201581,378Tyres 30%
201485,336Tyres 32%
201396,916Tyres 33%
201242,121Tyres 33%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Peugeot 208 cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score