BMW i4 MOT pass rates & common failures

Every completed first-attempt MOT on a BMW i4 in Great Britain in 2025 — 6,958 tests. Figures cover every i4 first-tested in 2025, all trims grouped. How the i4 ages, what it fails on, and what mileage is normal, computed directly from the official DVSA record of every test.

Pass rate 2025
84.0%
11.7 points above the class-4 average (72.3%); unadjusted for age — the age-matched comparison is below
Tests analysed
6,958
first tests, 2025
Arrived with a dangerous fault
8.1%
of i4 first tests; national 7.3%

How many BMW i4 cars are still on the road?

At the end of 2025, DVLA's register held 39,705 BMW i4 cars that were taxed or on SORN: 39,488 taxed and 217 on SORN (Statutory Off Road Notification — kept, but declared off the road by the keeper). The MOT figures above count tests; these count cars, across the whole United Kingdom, cars only. BMW i4 vans, where they exist, are counted by DVLA as goods vehicles and are not in these figures.

Still taxed, end of 2025
39,488
99.5% of the 39,705 i4 cars taxed or on SORN; 7 model variants grouped
On SORN, end of 2025
217
declared off the road by their keepers — 0.5% of that total

How the numbers are moving

The number of taxed i4 cars is still rising: 39,488 at the end of 2025, up 11,376 (40.5%) on the end of 2024, and the highest in the years shown. Cars on SORN went from 18 at the end of 2022 to 217 at the end of 2025, up 1105.6%. A car leaves the taxed count when it is scrapped, exported or declared off the road; the year-end counts do not say which.

Taxed i4 cars, year by year

Cars of this model taxed and on the road at the end of each year, 2014–2025.

010k20k30k40k2014201620182020202220242025Year (count at the end of the year)Taxed i4 cars, year 2014: 0Taxed i4 cars, year 2015: 0Taxed i4 cars, year 2016: 0Taxed i4 cars, year 2017: 0Taxed i4 cars, year 2018: 0Taxed i4 cars, year 2019: 0Taxed i4 cars, year 2020: 0Taxed i4 cars, year 2021: 94Taxed i4 cars, year 2022: 7kTaxed i4 cars, year 2023: 15kTaxed i4 cars, year 2024: 28kTaxed i4 cars, year 2025: 39k39k
View this chart as a table
YearTaxed i4 cars
20140
20150
20160
20170
20180
20190
20200
202194
20226,591
202315,445
202428,112
202539,488

i4 cars on SORN, year by year

Cars of this model declared off the road at the end of each year, 2014–2025. Its own scale — SORN counts are a fraction of the taxed count.

0501001502002502014201620182020202220242025Year (count at the end of the year)i4 cars on SORN, year 2014: 0i4 cars on SORN, year 2015: 0i4 cars on SORN, year 2016: 0i4 cars on SORN, year 2017: 0i4 cars on SORN, year 2018: 0i4 cars on SORN, year 2019: 0i4 cars on SORN, year 2020: 0i4 cars on SORN, year 2021: 0i4 cars on SORN, year 2022: 18i4 cars on SORN, year 2023: 48i4 cars on SORN, year 2024: 115i4 cars on SORN, year 2025: 217217
View this chart as a table
Yeari4 cars on SORN
20140
20150
20160
20170
20180
20190
20200
20210
202218
202348
2024115
2025217

Which model years survive

Taxed i4 cars at the end of 2025 by year of manufacture, and each year's share of the 39,488 taxed in all. Every build year holding at least 1% has its own row; the rest share one. A build year's count depends on how many were sold that year as well as how many have lasted.

Year of manufacture Taxed, end of 2025Share of taxed i4 cars
202511,88330.1%
202412,74932.3%
20238,65721.9%
20226,10815.5%
All other build years (one year, each under 1%)910.2%

Population source: Department for Transport / DVLA vehicle licensing statistics, table VEH0124, updated 15 July 2026; counts of the cars on DVLA's register that were taxed or on SORN at the end of each year shown, United Kingdom, cars only, excluding cars recorded with no model name. SortedCars groups DVLA's model name I4 under this model. Contains public sector information licensed under the Open Government Licence v3.0. SortedCars is not affiliated with, or endorsed by, DVLA or the Department for Transport.

How the i4 ages

First-time pass rate by vehicle age, i4 vs all cars, 2025.

BMW i4All cars
50%60%70%80%90%100%3579111315171920Vehicle age (years)BMW i4, vehicle age 3: 83.6%All cars, vehicle age 3: 88.5%All cars, vehicle age 4: 87.2%All cars, vehicle age 5: 86%All cars, vehicle age 6: 83.5%All cars, vehicle age 7: 80.9%All cars, vehicle age 8: 78.2%All cars, vehicle age 9: 74.9%All cars, vehicle age 10: 71.9%All cars, vehicle age 11: 68.6%All cars, vehicle age 12: 65.8%All cars, vehicle age 13: 63.5%All cars, vehicle age 14: 61.2%All cars, vehicle age 15: 59.3%All cars, vehicle age 16: 58.3%All cars, vehicle age 17: 57.2%All cars, vehicle age 18: 57.4%All cars, vehicle age 19: 57%All cars, vehicle age 20: 57.6%BMW i4 83.6%All cars 57.6%
View this chart as a table
Age (years)i4 testsi4 pass rateAll cars
36,44283.6%88.5%

Better or worse than the average car?

The i4's pass rate minus the all-cars pass rate at each age, in percentage points. Bars above zero: the i4 beats the average car of that age. Below zero: it trails.

i4 behind
-6-3+0+3+6Age 3: -4.9 points vs the average car3Vehicle age (years)
View this chart as a table
Age (years)Gap (points)
3-4.9

The i4 fleet on the road, by age

How many took a first MOT in 2025 at each age — the shape of the i4 fleet still in use.

01k3k5k7kAge 3: 6k3Vehicle age (years)
View this chart as a table
Age (years)First tests
36,442

What an i4 fails on

Where the failure items land when an i4 fails or needs a fix at test, 2025. Use it as a pre-purchase checklist: these are the areas to look at first.

Tyres73.2%
Lamps, reflectors and electrical equipment11.1%
Visibility8.2%
Identification of the vehicle3.7%
Seat belts and supplementary restraint systems1.0%
Brakes0.8%
Road Wheels0.7%
Steering0.7%

Share of all failure items, 2025 — the 8 biggest categories shown (99.5% of the items); smaller categories are not listed.

The advisories to watch

Where testers most often write "keep an eye on this" for a i4, 2025 — the faults in the post.

Tyres: 86.7% of advisories86.7%Non-component advisories: 9.3% of advisories9.3%Brakes: 1.9% of advisoriesRoad Wheels: 0.8% of advisoriesIdentification of the vehicle: 0.7% of advisoriesSuspension: 0.4% of advisories
TyresNon-component advisoriesBrakesRoad WheelsIdentification of the vehicleSuspension
View this chart as a table
CategoryShare of advisories
Tyres86.7%
Non-component advisories9.3%
Brakes1.9%
Road Wheels0.8%
Identification of the vehicle0.7%
Suspension0.4%

More vehicles we've checked

How these figures are computed. Every number on this page is calculated by SortedCars from the DVSA anonymised MOT results dataset (every MOT test in Great Britain — 2025 for single-year figures; trend figures state their span, currently 2023–2025). Where a figure comes from a sample or uses banded values (mileage is banded to 2,500 miles), the page says so beside the figure. Test class 4 only, first tests only — retests are excluded. Class 4 is the car MOT class and also covers car-derived vans, pickups and motorhomes tested to the same standard; where this page says "cars" it means class 4. Pass rate = passes ÷ (passes + failures + pass-after-rectification): a vehicle that failed and was fixed during the visit counts as a fail. Pass rates describe fleets, not individual machines: they reflect how cars were driven, maintained and used as well as how they were built, and beyond recorded mileage none of that is in the data. A well-kept example of a model with a weak average can still pass; a neglected example of a strong one can still fail. No figure is shown for any group with fewer than 500 tests. Alias spellings of a make in the DVSA file are counted under one make name, and all trims and variants of a model are grouped under one model name, using SortedCars' grouping tables. The taxed and SORN counts on this page are the one exception: they are not computed from MOT records but taken from the Department for Transport's vehicle licensing statistics (DfT/DVLA table VEH0124, updated 15 July 2026, Open Government Licence v3.0), which count the cars on DVLA's register that were taxed or on SORN at the end of each year shown, UK-wide, cars only. They describe a model as a whole, grouped under SortedCars' model names, and say nothing about any one car. “Dangerous” is DVSA's statutory defect category (in force since May 2018): a defect posing an immediate risk to road safety — driving the vehicle before repair is an offence. What these figures are for. These statistics are general information about groups of vehicles. They are not advice, a valuation or a recommendation to buy, avoid or price any particular vehicle, and no decision about one car should rest on them alone — check the car itself and its own records. We take care over the calculations, but we cannot guarantee they are complete, current or free of error, and we accept no liability for loss arising from reliance on them. This does not limit any liability that cannot lawfully be limited — see our Terms & Conditions. If you believe any figure on this page is inaccurate, contact us. SortedCars is not affiliated with, or endorsed by, the DVSA or DVLA. DVSA publishes the raw test records; the statistics on this page are SortedCars' own calculations from them. Contains public sector information licensed under the Open Government Licence v3.0.