Seat Altea reference tdi vs Seat Arona: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Seat Altea reference tdi
75%
MOT pass rate · 201 vehicles
Seat Arona
87%
MOT pass rate · 42,906 vehicles
More reliable
Verdict: On MOT pass rate, the Seat Arona is the more reliable of the two — 87% pass first time versus 75%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Seat Altea reference tdi | Seat Arona |
|---|---|---|
| MOT pass rate | 75% | 87% ✓ |
| MOT failure rate | 25% | 13% ✓ |
| Faults & advisories per test | 0.1 ✓ | 1.2 |
| Dangerous-fault share | 0% ✓ | 6% |
| Average mileage | 154,857 mi | 43,681 mi |
| Sample size (vehicles) | 201 | 42,906 |
Most common faults
Seat Altea reference tdi
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Child seat fitted not allowing full inspection of adult belt
- Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1)
- both rear tyres on 2-3mm
- both rear tyres perished between the tread
Seat Arona
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
Reliability FAQ
On MOT pass rate, the Seat Arona is the more reliable of the two — 87% pass first time versus 75%. It's one signal among several; check the full breakdown below.
Full Seat Altea reference tdi report Full Seat Arona report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.