Car statistics
How many SEAT Miis are still on the road in Great Britain, how many are declared off the road, how new registrations have changed and which fuels they use. Built from DVLA licensing records and 18,638 DVSA MOT tests.
There were 17,852 SEAT Miis licensed in Great Britain at the end of March 2026, and a further 256 declared off the road (SORN). That is 3.6% fewer than the peak of 18,528 in 2021.
Numbers peaked in 2021 and have fallen every year since, as older cars are scrapped faster than new ones are registered.
| Year | Licensed |
|---|---|
| 2012 | 1,882 |
| 2013 | 5,382 |
| 2014 | 8,642 |
| 2015 | 11,213 |
| 2016 | 13,421 |
| 2017 | 14,771 |
| 2018 | 15,920 |
| 2019 | 17,194 |
| 2020 | 17,303 |
| 2021 | 18,528 |
| 2022 | 18,369 |
| 2023 | 18,251 |
| 2024 | 18,057 |
| 2025 | 17,879 |
| 2026 | 17,852 |
Source:DfT / DVLA End of March 2026 Updated
Source:DfT / DVLA End of March 2026 Updated
In 2025, 75.9% of SEAT Mii MOT tests were passed first time, against 72.8% for all cars. Cars of the same ages as the SEAT Miis tested pass 73.1% of the time, so the SEAT Mii does better than average for its age, by 2.8 points. In 2024 its pass rate was 77.7%.
Comparing like with like: each bar pair covers cars of the same age, so an older average age does not count against a model.
| Vehicle age | SEAT Mii | All cars |
|---|---|---|
| 4–5 years | 87.1% | 87.6% |
| 6–7 years | 83.3% | 83.0% |
| 8–10 years | 75.4% | 75.7% |
| 11–14 years | 72.1% | 65.5% |
Source:DVSA,UK Motoring analysis 2025 Updated
Lamps, reflectors and electrical equipment is the most common reason a SEAT Mii fails its MOT, appearing on 37.0% of failed tests. A failed test can have defects in more than one category, so shares add up to more than 100%. 4.8% of SEAT Mii tests found at least one dangerous defect, against 7.3% for all cars.
| Defect category | Share of failed tests |
|---|---|
| Lamps, reflectors and electrical equipment | 37.0% |
| Brakes | 24.3% |
| Suspension | 19.6% |
| Tyres | 18.1% |
| Visibility | 13.5% |
| Noise, emissions and leaks | 11.1% |
| Body, chassis, structure | 10.9% |
| Seat belts and supplementary restraint systems | 6.8% |
Source:DVSA,UK Motoring analysis 2025 Updated
The single most common reason a SEAT Mii failed its MOT in 2025 was “Position lamp: not working”, on 8.6% of 4,489 failed tests. 44.4% of tests ended with at least one advisory, a problem to watch that did not fail the test; the most common was “Tyres: slightly damaged or cracking or perishing”. The same fault on any wheel or side counts once.
Share of failed tests with each defect. A test can fail for more than one.
| Defect | Share of failed tests |
|---|---|
| Position lamp: not working Lamps, reflectors and electrical equipment | 8.6% |
| Service brake performance: excessively binding Brakes | 8.1% |
| Registration plate lamp(s): inoperative in the case of a single lamp or all lamps Lamps, reflectors and electrical equipment | 7.8% |
| Headlamp aim: too low Lamps, reflectors and electrical equipment | 7.1% |
| Suspension arms: pin or bush excessively worn Suspension | 6.8% |
| Tyres: tread depth below requirements of 1.6mm Tyres | 6.7% |
| Wipers: does not clear the windscreen effectively Visibility | 6.2% |
| Fuel cap or sealing device: ineffective Body, chassis, structure | 5.8% |
| Catalyst emissions: lambda reading after 2nd fast idle outside specified limits Noise, emissions and leaks | 5.8% |
| SRS malfunction indicator lamp: warning lamp indicates a fault Seat belts and supplementary restraint systems | 5.7% |
Source:DVSA,UK Motoring analysis 2025 Updated
Share of all tests with each advisory: worth checking on a car you are buying.
| Advisory | Share of tests |
|---|---|
| Tyres: slightly damaged or cracking or perishing Tyres | 14.0% |
| Tread depth: worn close to legal limit or worn on edge Tyres | 13.4% |
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 6.7% |
| Suspension arms: pin or bush worn but not resulting in excessive movement Suspension | 6.2% |
| Brake pads: wearing thin Brakes | 3.7% |
| Service brake performance: binding but not excessively Brakes | 3.4% |
| Brake discs: worn, but not excessively Brakes | 2.9% |
| Play in steering rack inner joint(s) Non-component advisories | 2.2% |
| Rigid brake pipes: corroded, covered in grease or other material Brakes | 1.9% |
| Registration plates: deteriorated but not likely to be misread Identification of the vehicle | 1.8% |
Source:DVSA,UK Motoring analysis 2025 Updated
9 years of the SEAT Mii, by year of first registration, have their own page with MOT results, common faults, mileage and how many are left. Against all cars of the same age, the 2012 cars did best at their 2025 MOT (70.2% passed first time) and the 2016 cars worst (74.1%).
| Year | Registered | Left | Pass rate |
|---|---|---|---|
| 2012 | – | 1,724 | 70.2% |
| 2013 | – | 3,439 | 70.4% |
| 2014 | 3,276 | 3,109 | 75.3% |
| 2015 | 2,736 | 2,627 | 73.8% |
| 2016 | 2,269 | 2,190 | 74.1% |
| 2017 | 1,489 | 1,458 | 80.1% |
| 2018 | 1,279 | 1,255 | 82.6% |
| 2019 | 1,310 | 1,280 | 84.0% |
| 2021 | 1,175 | 1,040 | 87.3% |
Registered: cars on the DVLA record at the end of the year they were first registered (these counts start in 2014, so older years show a dash). Left: licensed or declared SORN at the end of 2025. Both cover the United Kingdom. Pass rate: first-time passes at normal MOT tests in Great Britain in 2025; all cars: every car first registered the same year.
The average SEAT Mii covers 5,389 miles a year, worked out from odometer readings at consecutive MOT tests.
| Vehicle age | Miles a year |
|---|---|
| 4–5 years | 5,518 |
| 6–7 years | 5,551 |
| 8–10 years | 5,421 |
| 11–14 years | 5,293 |
Source:DVSA,UK Motoring analysis 2025 Updated
Registrations of SEAT Miis for the first time in Great Britain peaked at 3,691 in 2013. In 2025, 1 were registered. With almost none registered new, the number on the road is likely to keep falling.
| Year | First registrations |
|---|---|
| ’01 | 0 |
| ’02 | 0 |
| ’03 | 0 |
| ’04 | 0 |
| ’05 | 0 |
| ’06 | 0 |
| ’07 | 0 |
| ’08 | 0 |
| ’09 | 0 |
| ’10 | 0 |
| ’11 | 0 |
| ’12 | 1,908 |
| ’13 | 3,691 |
| ’14 | 3,296 |
| ’15 | 2,755 |
| ’16 | 2,291 |
| ’17 | 1,519 |
| ’18 | 1,288 |
| ’19 | 1,311 |
| ’20 | 305 |
| ’21 | 1,176 |
| ’22 | 1 |
| ’23 | 1 |
| ’24 | 0 |
| ’25 | 1 |
Source:DfT / DVLA 2001 to 2025 Updated
Of the 18,199 SEAT Miis licensed in the UK at the end of 2025, 92.8% have an engine of 901cc to 1,000cc. The share with an engine of 901cc to 1,000cc has fallen from 100.0% in 2014 to 92.8%. Petrols made up 100.0% of those licensed in 2014 and 92.8% in 2025.
DVLA records engine size in 100cc bands.
| Engine size | Share of those licensed |
|---|---|
| 901cc to 1,000cc 16,888 licensed | 92.8% |
| No engine (electric) 1,310 licensed | 7.2% |
| Other sizes 1 licensed | 0.0% |
Source:DfT / DVLA End of 2014 to end of 2025 Updated
| Engine size | Fuel | Licensed | Share |
|---|---|---|---|
| 901–1,000cc | Petrol | 16,887 | 92.8% |
| Electric | Electric | 1,310 | 7.2% |
Share of those licensed at the end of each year.
| Year | Petrol | Electric |
|---|---|---|
| 2014 | 100.0% | 0.0% |
| 2015 | 100.0% | 0.0% |
| 2016 | 100.0% | 0.0% |
| 2017 | 100.0% | 0.0% |
| 2018 | 100.0% | 0.0% |
| 2019 | 100.0% | 0.0% |
| 2020 | 98.3% | 1.7% |
| 2021 | 92.2% | 7.8% |
| 2022 | 92.6% | 7.4% |
| 2023 | 92.6% | 7.4% |
| 2024 | 92.8% | 7.2% |
| 2025 | 92.8% | 7.2% |
Source:DfT / DVLA End of 2014 to end of 2025 Updated
United Kingdom figures from DfT table VEH0220 (licensed cars at the end of each year, SORN excluded), so they differ slightly from the Great Britain counts elsewhere on this page. How we use engine sizes.
The Vehicle Certification Agency’s new car data lists the SEAT Mii from 2013 to 2020. On the WLTP test (listings 2019 to 2020), official combined fuel economy for its petrol versions ranges from 51.4 to 53.3 mpg, with CO2 of 119 to 124 g/km. On the older NEDC test (listings 2013 to 2018), official combined fuel economy for its petrol versions ranges from 60.1 to 68.9 mpg, with CO2 of 95 to 108 g/km.
| Engine and fuel | Combined mpg | CO2 g/km | Listed | Euro standard | Versions |
|---|---|---|---|---|---|
| 1.0 petrol | 51.4–53.3 | 119–124 | 2019–2020 | Euro 6d‑TEMP | 3 |
| Engine and fuel | Combined mpg | CO2 g/km | Listed | Euro standard | Versions |
|---|---|---|---|---|---|
| 1.0 petrol | 60.1–68.9 | 95–108 | 2013–2018 | Euro 5 to Euro 6 | 7 |
Source:VCA July 2000 to 15 September 2026 Updated
DVSA lists 4 safety recalls for the SEAT Mii since 1992, the first in 2013. The most recent was launched on 27 December 2017.
All 4 SEAT Mii recalls, with defects, remedies and build dates
A recall applies to cars built on particular dates or with particular VINs, not to every SEAT Mii. The details come from manufacturers through DVSA, which says they may be delayed or incomplete. To check a specific car, use GOV.UK’s vehicle recall check or ask the manufacturer or a dealer. How we match recalls to models.
Source:DVSA,UK Motoring analysis January 1992 to September 2026 Updated
| Model | Licensed | Change on a year | SORN | Rank | Main fuel |
|---|---|---|---|---|---|
| SEAT Mii | 17,852 | −1.1% | 256 | 259 | Petrol |
| SEAT Ibiza | 203,938 | −0.4% | 14,733 | 38 | Petrol |
| SEAT Leon | 176,216 | −3.3% | 12,898 | 44 | Petrol |
| SEAT Arona | 79,665 | +7.4% | 315 | 111 | Petrol |
| SEAT Ateca | 70,273 | +1.1% | 246 | 119 | Petrol |
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| Licensed and SORN counts | Vehicle licensing statistics Department for Transport | End of March 2026 | 18,108 Mii records (licensed and SORN) | 15 September 2026 |
| Registered for the first time | Vehicle licensing statistics Department for Transport | 2001 to 2025 | – | 15 September 2026 |
| MOT results and mileage | Anonymised MOT tests and results Driver and Vehicle Standards Agency Derived statistics UK Motoring | 2025 | 18,638 MOT tests | 15 September 2026 |
Contains public sector information licensed under the Open Government Licence v3.0.
