2003 · 21 years old at test · Petrol mostly

2003 Daihatsu Sirion MOT pass rate and common faults

122 MOT tests in 2024. 55.7% passed first time, compared with 57.3% for all cars the same age.

97Below average
Passed first time55.7%
Failed or needed repairs44.3%
Typical mileage at test68,000

Most common reasons for failing

Share of all 122 tests where this item caused a failure.

  1. Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength12.3%
  2. Exhaust system: has a major leak of exhaust gases7.4%
  3. Malfunction indicator lamp: inoperative or indicates a malfunction5.7%
  4. Service brake imbalance: across an axle4.9%
  5. Position lamp: not working4.9%
  6. Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits4.9%
  7. Catalyst emissions: emissions likely to be affected by an exhaust leak3.3%
  8. Component mounting prescribed areas: prescribed area is corroded to the extent that control of the vehicle is likely to be adversely affected3.3%
    8 marked dangerous
  9. Emissions not tested: unable to be completed3.3%
  10. Catalyst emissions: carbon monoxide content after 2nd fast idle exceeds default limits2.5%

Problem areas

Failure items found per 100 tests, by part of the car.

  1. Emissions & leaks26.2%
  2. Lights & electrics22.1%
  3. Suspension21.3%
  4. Brakes18.0%
  5. Body & chassis16.4%
  6. Visibility (wipers, screen, mirrors)9.8%
  7. Tyres5.7%
  8. Seat belts & airbags2.5%

Most common advisories

Not failures yet, but things the tester warned about.

  1. Tyres - condition: has a tear, caused by separation or partial failure of its structure17.2%
  2. Tread depth below requirements of 1.6mm15.6%
  3. Rigid brake pipes: excessively corroded13.9%
  4. Coil spring: corroded so that its cross sectional area is reduced and seriously weakened10.7%
  5. Registration plates: inscription illegible9.0%

What this means if you are buying one

This model year fails more often than most cars its age, so budget for repairs and check the history carefully. Before buying, check the area that fails most: component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength. Then look up the car's own MOT history on GOV.UK with its number plate, and look for repeat advisories.

← 2002 SirionAll Sirion years2005 Sirion →

Questions

What is the MOT pass rate for a 2003 Daihatsu Sirion?

In 2024, 55.7% of 2003 Daihatsu Sirion cars passed their MOT first time, across 122 tests. The average for all 21-year-old cars was 57.3%.

What are the most common MOT failures on a 2003 Daihatsu Sirion?

The most common failure reasons were component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength; exhaust system: has a major leak of exhaust gases; malfunction indicator lamp: inoperative or indicates a malfunction. The biggest problem area was emissions & leaks.

Is the 2003 Daihatsu Sirion reliable at MOT time?

Its MOT Rank score is 97, which is below average for a car of its age (100 means exactly average).