2015 SEAT Mii · 8,863 MOT tests
2015 SEAT Mii reliability
2015 SEAT Miis fail 20.5% of first MOT tests, about average for its age and mileage, ranking 4 of 8 Mii years (8,863 DVSA tests, 2022 to 2024).
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- first-time fail rate (all SEAT Miis: 21.4%)
- 20.5%
- first-time fail rate (all SEAT Miis: 21.4%)
- fails than cars of the same age and mileage
- 1% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 8
- 43,539
- typical miles at its MOT, aged about 8
- MOT tests, 2022 to 2024
- 8,863
- MOT tests, 2022 to 2024
Year on year
2015 against the years either side
- 2014 cars: 11% fewer MOT fails than the average car its age (the 2015 car does worse)
- 2016 cars: 21% more MOT fails than the average car its age (the 2015 car does better)
- Weak spot: body, chassis and structure, 2.6% of tests fail here (84% above cars of the same age and mileage).
- Strong point: suspension, 61% fewer fails than comparable cars.
- Plates: a 2015 car carries a 64 plate (January–February 2015), or a 15 plate (March–August 2015), or a 65 plate (September–December 2015).
Common problems
What fails on a 2015 SEAT Mii
Fail rate by area
- Lights and electrics7.5%
- Brakes5.2%
- Windscreen, wipers and mirrors3.9%
- Tyres3.5%
- Exhaust, emissions and leaks2.6%
- Body, chassis and structure2.6%
- Suspension2%
Average for cars of the same age and mileage
Top failures
Position lamp not working 2.52%
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
Wiper blade not clearing windscreen 2.16%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Fuel filler cap ineffective 1.7%
A faulty fuel cap can let fuel vapour escape and may trigger warning lights, so a replacement is usually simple.
Tyre tread below 1.6mm 1.53%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Service brake excessively binding 1.4%
A brake that drags when released can overheat, wear quickly and waste fuel, so it needs prompt inspection.
Lambda reading outside specified limits 1.25%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
Common advisories
Tyre slightly damaged or cracking (12.41%) · Tyre worn close to legal limit (11.07%) · Brake disc pitted or scored (6.41%) · Brake pads wearing thin (4.52%) · Suspension arm pin/bush showing wear (3.42%) · Brake discs showing some wear (2.53%)
Is a 2015 SEAT Mii reliable?
2015 SEAT Miis fail 20.5% of first MOT tests, about average for its age and mileage, ranking 4 of 8 Mii years (8,863 DVSA tests, 2022 to 2024).
What fails on a 2015 SEAT Mii MOT?
Most often position lamp not working (2.52% of tests), wiper blade not clearing windscreen (2.16% of tests), fuel filler cap ineffective (1.7% of tests).
How many miles should a 2015 SEAT Mii have done?
At its MOT aged about 8, a typical 2015 SEAT Mii shows 43,539 miles. Much higher or lower is worth asking about.
What plate is a 2015 car?
A car first registered in 2015 carries a 64 plate (January–February 2015), or a 15 plate (March–August 2015), or a 65 plate (September–December 2015).
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