2017 SEAT Mii: MOT pass rate and reliability
84.9% of 2017 SEAT Miis pass the MOT first time, measured across 1,493 DVSA tests on that model year alone. The average one had covered 39,427 miles.
How the 2017 compares
- Against all SEAT Miis (82.4%, 17,470 tests): +2.5 points
- Against all 2017 cars (83.5%): +1.4 points
- National first-time pass rate, all cars and years: 77%
Every SEAT Mii model year
Pass rates fall as cars age, so the only fair comparison for a 2017 car is other cars of the same age. The full run for the SEAT Mii:
| Year | Pass rate | Tests | Avg mileage |
|---|---|---|---|
| 2012 | 77.6% | 1,774 | 70,375 |
| 2013 | 78.5% | 3,523 | 65,457 |
| 2014 | 80.9% | 3,135 | 59,002 |
| 2015 | 82.5% | 2,703 | 52,593 |
| 2016 | 82.8% | 2,239 | 46,355 |
| 2017 | 84.9% | 1,493 | 39,427 |
| 2018 | 88.2% | 1,275 | 33,528 |
| 2019 | 92.8% | 1,327 | 26,695 |
What this means if you are buying a 2017 Mii
The 2017 is one of the stronger years for this model, passing 2.5 points more often than the SEAT Mii average. That is a point in its favour, though condition and service history still matter more than the model year. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.
What a 9-year-old car fails on
A 2017 car is 9 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:
- Lights and electrical: 10.36% of all cars tested
- Suspension: 8.65% of all cars tested
- Tyres: 6.23% of all cars tested
- Brakes: 6.1% of all cars tested
- Visibility: wipers, washers, glass: 4.65% of all cars tested
- Body, chassis and structure: 3.18% of all cars tested
That is below average for a car this age, worth a mileage-consistency check since an unusually low reading is sometimes clocking rather than luck. On a 2017 SEAT Mii the average at test was 39,427 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.
The strongest year for this model is 2019 at 92.8%, and the weakest in our data is 2012 at 77.6%. That 15.2 point spread across the model's life is why comparing a 2017 car against a newer one tells you very little.
Nearby model years
- 2014 SEAT Mii - 80.9%
- 2015 SEAT Mii - 82.5%
- 2016 SEAT Mii - 82.8%
- 2018 SEAT Mii - 88.2%
- 2019 SEAT Mii - 92.8%