60.4%
Daihatsu Sirion
Daihatsu Sirion MOT pass rate and common problems
The Daihatsu Sirion passed 60.4% of its initial MOT tests in 2025, 11.9 percentage points below the 72.3% UK average. The item testers recorded most often was ball joint excessively worn.
Checking a specific car? Its own results, advisories and recorded mileages are in a free MOT history check.
How the Sirion compares
Initial MOT tests in 2025, retests excluded. A car that failed and was repaired at the test station counts as a fail.
61.5%
Daihatsu average
72.3%
UK average, all cars
The Sirion runs 1.1 points behind the Daihatsu average. It is 1st of the 2 Daihatsu models in the data. The average Sirion arrived at its test 18.1 years old with 73,721 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.
Sirion MOT pass rate by age
The same 2025 tests split by the car's age at test.
| Age at test | Tests | Pass rate | vs UK average |
|---|---|---|---|
| 11 years and over | 5,416 | 60.4% | 11.9 pts below |
Every Daihatsu Sirion tested in 2025 was aged 11 years and over, so there is no other age group to compare with. The UK average of 72.3% covers cars of every age, so compare like with like.
Where Sirion failures cluster
Every failure item recorded on Daihatsu Sirion cars in 2025, grouped into the DVSA's test areas.
Suspension and lamps, reflectors and electrical equipment together account for 49.1% of recorded failure items. These are recorded failures across the model, not faults every car has.
The 10 most common Sirion MOT failures
Specific items recorded on Daihatsu Sirion cars that failed their 2025 MOT, as a share of all recorded failure items.
Together these 10 items make up 42.7% of everything testers recorded against failed Daihatsu Sirion cars. The rest is spread across many smaller items, and one failed test often records several at once.
What to look at on a Sirion
The recorded failures above, grouped by area, biggest first.
1
Suspension
Recorded most often: ball joint excessively worn, component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength and linkage ball joints ball joint excessively worn. 17.7% of failure items.
2
Lamps, reflectors and electrical equipment
Recorded most often: headlamp aim projected beam image is obviously incorrect, stop lamp not working and position lamp not working. 12.3% of failure items.
3
Visibility
Recorded most often: wipers does not clear the windscreen effectively. 5.3% of failure items.
4
Brakes
Recorded most often: rigid brake pipes excessively corroded. 2.9% of failure items.
The car's own MOT history matters more than any model average. A free MOT history check shows whether a specific Sirion has failed on these items before, or had them noted as advisories. Buying one? See the used Daihatsu Sirion buying guide.
Already found one?
Check its finance, write-off, theft, mileage and keeper history with a £15 vehicle history report.
Daihatsu Sirion MOT FAQs
What is the Daihatsu Sirion MOT pass rate?
60.4% of Daihatsu Sirion cars passed their initial MOT first time in 2025, from 5,416 tests. That is 11.9 percentage points below the 72.3% average for all cars, and ranks 491st of 575 models.
What does a Daihatsu Sirion most commonly fail its MOT on?
The item testers recorded most often on Daihatsu Sirion cars failing their 2025 MOT was ball joint excessively worn, on 10.3% of failure items. Next were wipers does not clear the windscreen effectively (5.3%) and headlamp aim projected beam image is obviously incorrect (4.9%).
Which area causes the most Daihatsu Sirion MOT failures?
Across every recorded failure item, the largest area was suspension at 25.9%, followed by lamps, reflectors and electrical equipment at 23.2%.
Does this mean every Daihatsu Sirion has these problems?
No. These are the items testers recorded across every Daihatsu Sirion 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 Daihatsu Sirion'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.