Performance by cohort

3 year bands · 71,073 tests

Pass rate climbs 9.3 points across the cohorts — newer Arona examples clear the test more reliably than the early cars.

Pre-2018 cohort 6,957

Pass

81.4%

Fail

16.1%

PRS

2.1%

Avg mileage at test

43,094 mi

2018–2020 cohort 58,019

Pass

87.0%

Fail

10.6%

PRS

2.1%

Avg mileage at test

34,027 mi

2021+ cohort 6,097

Pass

90.7%

Fail

6.5%

PRS

2.5%

Avg mileage at test

24,050 mi

Cohort = vehicle's first-registration year band. Same model, different generations of build.

Generations on file · 2

SEAT Arona · UK market

Photos: Wikimedia Commons · CC BY-SA / CC BY / public domain.

The picture

SEAT Arona at 87.1%: near the top of the fleet on a young MQB-A0 compact SUV

The SEAT Arona posts 87.1% first-time pass from 42,841 tests — well above the UK fleet average at an average presenting mileage of 25,624. At under 26,000 average miles, this is a very young fleet. Top failures are tyre tread, windscreen chips and brake pads. The Arona's MQB-A0 platform, shared with the VW Polo and Skoda Kamiq, shows no mechanical failures at this mileage — entirely maintenance items. At 87.1%, the Arona is a strong performer. Pre-test: verify tyre depths and brake pad condition.

ABI Insurance Group

Group 10–20

Below the fleet average — generally reasonable to insure. Lower groups cost less to insure; UK fleet average is around Group 22.

Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →

10–20

out of 50

Compare quotes →

Top ten reasons for rejection.

Filter failures:

Hide wear items to see the model's real defects.

01

Steering rack gaiter or ball joint dust cover damaged or deteriorated

2,962 occurrences · 4.2% of tests
02

Steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc

1,560 occurrences · 2.2% of tests
03

a brake lining or pad worn below 1.5mm

1,371 occurrences · 1.9% of tests
04

A tyre seriously damaged

825 occurrences · 1.2% of tests
05

Tyre tread depth not in accordance with the requirements

817 occurrences · 1.1% of tests
06

Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view

711 occurrences · 1.0% of tests
07

A tyre cords visible or damaged

591 occurrences · 0.8% of tests
08

A tyre seriously damaged

583 occurrences · 0.8% of tests
09

Brake disc or drum significantly and obviously worn

490 occurrences · 0.7% of tests
10

Excessive fluctuation in brake effort through each wheel revolution.

423 occurrences · 0.6% of tests

Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.

Worst-case fix budget · top 4 failures

£300–£735

If every one of this Arona's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →

Try the calculator

Build your own retest budget.

Year-band analysis

Best year to buy. Worst to avoid.

First-time MOT pass rate split by registration band. A 9.3-point gap between bands means the year you buy SEAT Arona has a real effect on what turns up at the garage.

Best band to buy

90.7%

2021+ registration

the 2021-on band climbs to 90.7% — a 9.3-point improvement. Tests in this band average 24,050 miles — roughly 19K miles fewer on the clock than the older band. Failures here are mostly wear items: damaged but not adversely affecting driver's view, less than 1.5 mm thick — the structural issues that drag down older examples don't appear in the top-10 for this band. Post-2020 examples are early in their MOT life and generally show the cleanest records.

Band to be cautious about

81.4%

Pre-2018 registration

On the older band (pre-2018), the data shows a 81.4% pass rate against a fleet average of 90.7% on the newer band. The main culprits logged at test: ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt, ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt, and less than 1.5 mm thick. Average mileage on test for this band is 43,094 miles — high-mileage wear items are a recurring theme.

Best band to buy: 2021+ (90.7% first-time pass). Worst band to avoid: pre-2018 (81.4% pass). That's a 9.3-point spread across 6,957 older tests and 6,097 newer ones — year of build makes a material difference on this model.

Year-spread leaderboard →

Tools that pre-empt a retest.

Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.

Item 01 · Amazon UK

Brake pad measurement gauge

Testers fail pads under 1.5mm. A wear gauge tells you if you've got two months left or two weeks.

Search Amazon UK

Item 02 · Amazon UK

Digital tyre-tread depth gauge

Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.

Search Amazon UK

My Motor World · affiliate

Parts & supplies for this fix

Affiliate links — small commission, no extra cost to you.

Hycote

Hycote Touch Up Colour Paint Brush Seat Flash Red 12.5ml

£6.59

View at My Motor World →

Hycote

Hycote Seat Black Magic Double Acrylic Spray Paint 150ml

£6.59

View at My Motor World →

Hycote

Hycote Seat Candy White Double Acrylic Spray Paint 150ml

£6.59

View at My Motor World →

Hycote

Hycote Seat Emocion Red Double Acrylic Spray Paint 150ml

£6.59

View at My Motor World →

Click Mechanic · affiliate

Book a mobile mechanic

Affiliate links — small commission, no extra cost to you.

Mobile mechanic · UK-wide

Book a mechanic at your door.

Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.

Get a quote →

Owner reports · Honest John

What owners actually report.

Verbatim faults logged by owners on honestjohn.co.uk over recent years. We didn't summarise — these are the words people typed in.

What's good

The SEAT Arona is a stylish compact SUV on the MQB-A0 platform, offering good value against VW T-Cross and Skoda Kamiq equivalents. The 1.0-litre TSI engine is efficient and reliable.

Recall history

5 UK recalls on record.

The Arona has 5 official UK vehicle recalls covering defect details, remedies, and affected build dates.

See all recalls

Buying or keeping an Arona?

Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.

If you own an Arona and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.