Used car guide

2021 SEAT Arona: common problems and MOT failures

What MOT testers find on the SEAT Arona first registered in 2021: we looked at the 23,652 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

23,652MOTs of 2021 cars, done in 2023–2025
88%pass first time (all 2021 cars: 87%)
7,000typical miles a year
2.7×the usual rate for brake discs

What goes wrong more than usual on a 2021 SEAT Arona?

Parts flagged at MOT more often on the 2021 SEAT Arona than on all cars registered in 2021.

  • Brake discs2.7× usual
    SEAT Arona
    16.6% All 2021 cars
    6.1%

    Failed outright at MOT: 1.7%, against 0.3% of all 2021 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.

  • Brake pads2× usual
    SEAT Arona
    12.2% All 2021 cars
    6.1%

    Failed outright at MOT: 2.6%, against 1.1% of all 2021 cars. The rest were advisories or minor defects.

    Rough price £75–£175 (one axle) ClickMechanic

    At the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.

  • Braking performance3.1× usual
    SEAT Arona
    2.2% All 2021 cars
    0.7%

    Failed outright at MOT: 1.3%, against 0.2% of all 2021 cars. The rest were advisories or minor defects.

    Rough price £100–£350 our estimate

    At the viewing: On a quiet road, brake firmly from about 30mph. The car should stop straight without pulling.

Common 2021 SEAT Arona MOT failures and advisories

The share of 2021 SEAT Arona MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Brakes
    23% 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.

  • Tyres
    21% 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.

  • Wipers, windscreen and mirrors
    4% of testsRough price £15–£250

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

  • Seats and seatbelts
    4% of testsRough price £80–£250

    At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.

  • Lights and electrics
    3% of testsRough price £10–£80

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

  • Suspension
    2% 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.

Known faults on the 2021 SEAT Arona

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 2021 SEAT Arona

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

  1. Any recent work on the brake discs? (Flagged at MOT 2.7× as often on the 2021 SEAT Arona as on other cars the same age.)
  2. Any recent work on the brake pads? (Flagged at MOT 2× as often on the 2021 SEAT Arona as on other cars the same age.)
  3. Any recent work on the braking performance? (Flagged at MOT 3.1× as often on the 2021 SEAT Arona as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a SEAT Arona?

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 SEAT Arona compared

YearMOT testsMost flagged
2026–Too new for MOT data
2025–Too new for MOT data
2024–Too new for MOT data
2023766Tyres 16%
20227,070Tyres 18%
202031,932Tyres 24%
201943,606Tyres 29%
201835,709Tyres 29%
20171,846Suspension 30%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of SEAT Arona cars first registered in 2021. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score