Pass rate
66.9%
Below average — 6.4 pts behind the 73.3% that cars this age and mileage manage.
Across 272 recorded tests.
Typical repair bill £65–£173
2001 Daihatsu Sirion MOT pass rate
- 2001
- typical 72,338 mi
Most common fault
Suspension
21.7% of faults · 21.0% nationally
mostly worn arm bushes, split ball-joint boots and broken coil springs.
Which year to buy
- Best 2010 78.2% pass
- Avoid 2001 66.9% pass · this year
Across the 11 years on record, a spread of 11.3 points. See every year →
- First-attempt pass
- 57.5%
- Typical mileage
- 72k mi
The 2001 Daihatsu Sirion MOT pass rate is 66.9% of its MOT tests — 6.4 points behind what its age and mileage predict. Suspension is the biggest single reason it fails, at 21.7% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how Daihatsu Sirion does in your corner of the country.
Expert verdict
Body & chassis: 2.3× the national share
Body & chassis accounts for 12.7% of everything recorded on the 2001 Daihatsu Sirion, against 5.6% nationally — 7.1 points above. Suspension is still the single largest share at 21.7%, but at 21.0% nationally that one is ordinary. Look underneath for corrosion near the jacking points and suspension mounts; surface rust is normal, flaking metal is not.
- Falls short of its own age and mileage. Like-for-like, cars this age and mileage expect about 73.3%; this one manages 66.9% — 6.4 points below. Age is a fair excuse; this is not age.
- When it fails, it costs. Only 24% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Daihatsu Sirion? Get an email when these numbers change .
How does the 2001 Daihatsu Sirion compare?
Cars of this age and mileage average 73.3%, so this figure is 6.4 points behind what its age and mileage predict. On a first attempt, before any retests, the figure drops to 57.5%. The median 2001 Daihatsu Sirion in this dataset had covered 72,338 mi.
Pass rates also shift with the test month: tests recorded October–March passed 66.9% of the time, April–September 66.9%.
The single most recorded failure item is "Ball joint dust cover severely deteriorated", noted on 11.76% of tests.
- 272 recorded tests behind this page.
- 66.9% overall pass rate, 57.5% on a first attempt.
- Across every year of the Daihatsu Sirion, the average is 75.0% — best year 2010 (78.2%), worst 2001 (66.9%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 272
- Typical mileage (median)
- 72,338 mi
- Make and model
- Daihatsu Sirion
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Ball Joint
Usually a DIY or independent-garage job.
Does mileage affect the Sirion MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 33% so small gaps stay visible.
Regional pass rates for the Sirion
| Region | Tests | Pass rate |
|---|---|---|
| South East | 120 | 65.0% |
| South West | 48 | 56.3% |
| West Midlands | 23 | 78.3% |
| East of England | 20 | 60.0% |
| London | 16 | 93.8% |
| North West | 16 | 87.5% |
| Yorkshire | 15 | 53.3% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2001 Sirion
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2001 Sirion
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the suspension joints 11.8% of tests
“ball joint dust cover severely deteriorated”
With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.
-
Check corrosion 10.3% of tests
“component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength”
Look under the sills, around the jacking points and where the suspension mounts meet the body. Flaking, holed or crumbly metal fails; a brown stain on sound metal does not.
-
Check the exhaust and emissions 4.8% of tests
“exhaust system has a major leak of exhaust gases”
Listen for a blow at idle and have someone rev it gently. Then look at the tailpipe smoke: blue is oil, white when warm is coolant, black is over-fuelling. Any of those and the emissions test is the least of it.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2001 Sirion through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £65–£173 — and 24% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £65–£173
- Cheapest common item: registration plate lamp(s) inoperative in the…
- £5–£20
- Dearest common item: component mounting prescribed areas…
- £180–£450
- Common items a careful owner can do at home
- 50%
- Repairs that still cost under £30
- 24%
Estimates from typical UK parts prices, weighted by how often each item appears in 272 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the Sirion, side by side
11 model years on record, from 2000 to 2010. Across them the pass rate runs from 66.9% to 78.2% — a spread of 11.3 points. The bar under each year is the item that failed it most often.
- 2000 68.3% ball joint dust cover severely…
- 2001 66.9%ball joint dust cover severely…
- 2002 73.1% ball joint dust cover severely…
- 2003 74.0% ball joint dust cover severely…
- 2004 72.1% ball joint dust cover severely…
- 2005 72.4% ball joint excessively worn
- 2006 73.5% ball joint excessively worn
- 2007 75.4% ball joint excessively worn
- 2008 75.9% ball joint excessively worn
- 2009 77.6% ball joint excessively worn
- 2010 78.2% ball joint excessively worn
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2001 Daihatsu Sirion with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2001 cars with a similar record
- Volkswagen Beetle 67.8%
- Citroen Xsara 68.1%
- MINI Mini 68.2%
- Ford Fiesta 69.0%
- Vauxhall Corsa 69.1%
- Honda Accord 69.5%
Closest pass rates among 2001 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2001 Daihatsu Sirion 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 733 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Suspension | 161 | 21.70% | 20.98% | +0.72 |
| Brakes | 126 | 17.00% | 20.89% | −3.89 |
| Lamps, reflectors and electrical equipment | 99 | 13.30% | 12.21% | +1.09 |
| Body, chassis, structure | 94 | 12.70% | 5.57% | +7.13 |
| Tyres | 74 | 10.00% | 19.76% | −9.76 |
| Noise, emissions and leaks | 72 | 9.70% | 5.52% | +4.18 |
| Identification of the vehicle | 32 | 4.30% | 1.76% | +2.54 |
| Visibility | 31 | 4.20% | 4.97% | −0.77 |
| Non-component advisories | 26 | 3.50% | 4.18% | −0.68 |
| Seat belts and supplementary restraint systems | 18 | 2.40% | 0.82% | +1.58 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Ball joint dust cover severely deteriorated Suspension | Minor | 11.8% | £18–45 |
| Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength Suspension | Major | 10.3% | £180–450 |
| Exhaust system has a major leak of exhaust gases Body, chassis, structure | Major | 4.8% | £45–120 |
| Headlamp lens slightly defective Lamps, reflectors and electrical equipment | Minor | 4.8% | £5–25 |
| Prescribed areas prescribed area strength or continuity significantly reduced Seat belts and supplementary restraint systems | Major | 4.0% | £40–120 |
| Registration plate lamp(s) inoperative in the case of multiple lamps or light sources Lamps, reflectors and electrical equipment | Minor | 4.0% | £5–20 |
| Position lamp not working Lamps, reflectors and electrical equipment | Major | 3.7% | £5–25 |
| Emissions not tested unable to be completed Noise, emissions and leaks | Major | 3.3% | £60–250 |
| Integral vehicle structure condition corroded to the extent that the rigidity of the assembly is significantly reduced Body, chassis, structure | Major | 3.3% | £180–450 |
| Service brake imbalance across an axle Brakes | Major | 2.9% | £45–110 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 14.3% | £45–95 |
| Rigid brake pipes excessively corroded Brakes | Advisory | 13.2% | £80–180 |
| Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength Suspension | Advisory | 12.1% | £180–450 |
| Engine oil leaks leaking excessively from engine Noise, emissions and leaks | Advisory | 10.7% | £200–700 |
| Registration plates inscription illegible Identification of the vehicle | Advisory | 10.3% | £20–80 |
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 7.0% | £45–110 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 27 | 88.9% | 22,084 mi |
| 30-60k | 79 | 73.4% | 51,497 mi |
| 60-90k | 95 | 67.4% | 77,889 mi |
| 90-120k | 54 | 53.7% | 100,660 mi |
| 120k+ | 17 | 41.2% | 128,140 mi |
Source: 272 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2001 Sirion MOT questions
What is the MOT pass rate for a 2001 Daihatsu Sirion?
66.9% of the 272 2001 Daihatsu Sirion tests in this dataset passed, against a national average of 73.3% for cars first used in 2001. First-attempt pass rate: 57.5%.
What are the most common MOT failures on a 2001 Daihatsu Sirion?
The three most recorded items are ball joint dust cover severely deteriorated (11.76%), component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength (10.29%), exhaust system has a major leak of exhaust gases (4.78%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2001 Daihatsu Sirion MOT pass rate?
Yes. Cars under 30,000 miles passed 88.9% of the time, falling to 41.2% for those over 120,000 miles. The median 2001 Daihatsu Sirion in this dataset had covered 72,338 mi.
Does the season affect the 2001 Daihatsu Sirion MOT pass rate?
Tests recorded in the winter months (October–March) passed 66.9% of the time; summer months (April–September) passed 66.9%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.