73.8%
Toyota iQ
Toyota iQ MOT pass rate and common problems
The Toyota iQ passed 73.8% of its initial MOT tests in 2025, 1.5 percentage points above the 72.3% UK average. The item testers recorded most often was wipers does not clear the windscreen effectively.
Checking a specific car? Its own results, advisories and recorded mileages are in a free MOT history check.
How the iQ compares
Initial MOT tests in 2025, retests excluded. A car that failed and was repaired at the test station counts as a fail.
75.1%
Toyota average
72.3%
UK average, all cars
The iQ runs 1.3 points behind the Toyota average. It is 18th of the 32 Toyota models in the data. The average iQ arrived at its test 14.5 years old with 72,901 miles recorded.
A pass rate records whether cars met the roadworthiness standard on test day. It is not a reliability score, and part of any gap reflects how old the tested cars were.
iQ MOT pass rate by age
The same 2025 tests split by the car's age at test.
Toyota iQ cars aged 6 to 10 years passed 86.3% of MOT tests. For cars aged 11 years and over that fell to 73.5%, a drop of 12.8 percentage points.
| Age at test | Tests | Pass rate | vs UK average |
|---|---|---|---|
| 3 to 5 years (small sample) | 6 | 83.3% | 11 pts above |
| 6 to 10 years | 466 | 86.3% | 14 pts above |
| 11 years and over | 16,151 | 73.5% | 1.2 pts above |
That is a steep decline with age, so the headline rate flatters older examples. The UK average of 72.3% covers cars of every age, so compare like with like.
Where iQ failures cluster
Every failure item recorded on Toyota iQ cars in 2025, grouped into the DVSA's test areas.
Lamps, reflectors and electrical equipment and suspension together account for 48.7% of recorded failure items. These are recorded failures across the model, not faults every car has.
The 10 most common iQ MOT failures
Specific items recorded on Toyota iQ cars that failed their 2025 MOT, as a share of all recorded failure items.
Together these 10 items make up 45.8% of everything testers recorded against failed Toyota iQ cars. The rest is spread across many smaller items, and one failed test often records several at once.
What to look at on a iQ
The recorded failures above, grouped by area, biggest first.
1
Lamps, reflectors and electrical equipment
Recorded most often: position lamp not working, headlamp aim projected beam image is obviously incorrect and stop lamp not working. 14.7% of failure items.
2
Visibility
Recorded most often: wipers does not clear the windscreen effectively and washers provides insufficient washer liquid. 11% of failure items.
3
Suspension
Recorded most often: linkage ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt and ball joint dust cover no longer prevents the ingress of dirt. 8.9% of failure items.
4
Brakes
Recorded most often: rigid brake pipes excessively corroded and brake pads less than 1.5 mm thick. 7.5% of failure items.
The car's own MOT history matters more than any model average. A free MOT history check shows whether a specific iQ has failed on these items before, or had them noted as advisories. Buying one? See the used Toyota iQ buying guide.
Already found one?
Check its finance, write-off, theft, mileage and keeper history with a £15 vehicle history report.
Toyota iQ MOT FAQs
What is the Toyota iQ MOT pass rate?
73.8% of Toyota iQ cars passed their initial MOT first time in 2025, from 16,623 tests. That is 1.5 percentage points above the 72.3% average for all cars, and ranks 284th of 575 models.
What does a Toyota iQ most commonly fail its MOT on?
The item testers recorded most often on Toyota iQ cars failing their 2025 MOT was wipers does not clear the windscreen effectively, on 7.4% of failure items. Next were position lamp not working (7.2%) and linkage ball joint dust cover ball joint dust cover no longer prevents the ingress of dirt (5.9%).
Which area causes the most Toyota iQ MOT failures?
Across every recorded failure item, the largest area was lamps, reflectors and electrical equipment at 31.3%, followed by suspension at 17.5%.
Do older Toyota iQ cars fail their MOT more often?
Toyota iQ cars aged 6 to 10 years passed 86.3% of MOT tests in 2025, against 73.5% for cars aged 11 years and over.
Does this mean every Toyota iQ has these problems?
No. These are the items testers recorded across every Toyota iQ that failed in 2025. They show where the model most often needs attention, not the condition of any individual car.
How do I see a specific Toyota iQ's MOT history?
Enter its registration on the free Carpeep MOT history check to see that car's own test results, failures, advisories and recorded mileages.
MOT figures are aggregated from the DVSA MOT Anonymised data set for 2025: class 4 initial tests, retests excluded, with failure items from failed tests (advisories and minor defects excluded), licensed under the Open Government Licence v3.0. MOT results describe roadworthiness at test, not mechanical reliability.