2021 SEAT Arona MOT pass rate: 91.5% (5,485 tests)

2021-registered SEAT Aronas passed 91.5% of 5,485 MOT tests in 2023–2025 — 1.1 points better than all UK cars registered in 2021 (90.4%). This is one of the strongest Arona years in the age-adjusted MOT ranking, although the individual car still matters more.

91.5%Pass rate, 2021 cars

101.1Age-adjusted index (100 = average)

5,485Tests analysed

24,757 miMedian mileage at test

91.5% / 75.0%Petrol vs diesel pass rate

Is the 2021 Arona getting worse?

Pass rate of 2021-registered cars across recent test years:

Test year	Pass rate
2024	92.4% +1.8 vs same-age
2025	90.5% +0.3 vs same-age

The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.

What fails on a 2021 Arona

#	System	Defects recorded	Share
1	Brakes	227	29.2%
2	Tyres	215	27.7%
3	Visibility	106	13.6%
4	Lamps, reflectors and electrical equipment	77	9.9%
5	Seat belts and supplementary restraint systems	54	6.9%
6	Suspension	33	4.2%

All Arona years compared

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2017	1,850	73.9%	-10.1 pts	42,654
2018	35,598	81.5%	-4.9 pts	38,960
2019	43,448	88.1%	-0.2 pts	31,778
2020	31,053	90.3%	+0.3 pts	24,968
2021 (this page)	5,485	91.5%	+1.1 pts	24,757
2022	1,547	93.0%	+1.7 pts	22,217

Weighing up which year to buy? See the full ranking: SEAT Arona years to avoid.

Buying a 2021 Arona? Two checks first

Free MOT history checkThe exact car’s failures, advisories and mileage trail — sellers can’t edit it
Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

FAQs

Is a 2021 SEAT Arona reliable?

2021-registered examples passed 91.5% of their MOT tests (5,485 tests, 2023–2025), +1.1 points versus all UK cars registered in the same year. At roughly 5 years old with a median 24,757 miles, condition now varies car by car — always check the individual MOT history.

What mileage is too high for a 2021 Arona?

The median tested example shows 24,757 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.

Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.