Pass rate
99.0%
Above average — 13.0 pts ahead of the 86.0% that cars this age and mileage manage.
Across 97 recorded tests.
Typical repair bill £29–£88
2017 Aston Martin DB9 MOT pass rate
- 2017
- typical 11,201 mi
Only 97 tests of this exact model and year are in the DVSA data, below the 100 we ask for before a page goes in the index. The figures are still shown, because they are the only ones there are.
Most common fault
Brakes
27.3% of faults · 20.9% nationally
mostly worn pads and discs, corroded pipes and a handbrake that will not hold.
Which year to buy
- Best 2017 99.0% pass · this year
- Avoid 2006 90.3% pass
Across the 14 years on record, a spread of 8.7 points. See every year →
- First-attempt pass
- 99.0%
- Typical mileage
- 11k mi
The 2017 Aston Martin DB9 MOT pass rate is 99.0% of its MOT tests — 13.0 points ahead of what its age and mileage predict. Brakes is the biggest single reason it fails, at 27.3% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how Aston Martin DB9 does in your corner of the country.
Expert verdict
Lamps & electrics: 2.2× the national share
Lamps & electrics make up 27.3% of everything recorded on the 2017 Aston Martin Db9, against 12.2% nationally — 15.1 points above. Brakes are still the single largest share at 27.3%, but at 20.9% nationally that one is ordinary. Walk round the car with the lights on before the test: bulbs, indicators and number-plate lamps are the cheapest failures to prevent and among the most common.
- Beats its own age and mileage. Once you allow for how old and how far these cars have been driven, the expected pass rate is 86.0% and this one manages 99.0% — 13.0 points ahead of what its age and mileage predict.
- Based on a small sample. 97 tests back this page. That is enough to publish and to index, not enough to treat the decimal places as precise — read the pattern, not the second digit.
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 Aston Martin DB9? Get an email when these numbers change .
How does the 2017 Aston Martin DB9 compare?
Cars of this age and mileage average 86.0%, so this figure is 13.0 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 99.0%. The median 2017 Aston Martin DB9 in this dataset had covered 11,201 mi.
Pass rates also shift with the test month: tests recorded October–March passed 100.0% of the time, April–September 97.8%.
The single most recorded failure item is "Headlamp aim too high", noted on 1.03% of tests.
- 97 recorded tests behind this page.
- 99.0% overall pass rate, 99.0% on a first attempt.
- Across every year of the Aston Martin DB9, the average is 91.9% — best year 2017 (99.0%), worst 2006 (90.3%).
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
- 97
- Typical mileage (median)
- 11,201 mi
- Make and model
- Aston Martin DB9
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Headlight Alignment
Typically a garage job — get quotes before committing.
Does mileage affect the DB9 MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 90% so small gaps stay visible.
Regional pass rates for the DB9
| Region | Tests | Pass rate |
|---|---|---|
| South East | 29 | 100.0% |
| South West | 18 | 100.0% |
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 2017 DB9
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 2017 DB9
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 lights 1.0% of tests
“headlamp aim too high”
Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.
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 2017 DB9 through its MOT
Across the 4 items that are recorded most often on this model, the average repair comes to £29–£88 — and 50% of those repairs are parts that cost under £30.
- Average repair across the 4 common items
- £29–£88
- Cheapest common item: individual direction indicators lens defective
- £3–£12
- Dearest common item: passenger's seat backrest cannot be secured…
- £80–£250
- Common items a careful owner can do at home
- 50%
- Repairs that still cost under £30
- 50%
Estimates from typical UK parts prices, weighted by how often each item appears in 97 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 DB9, side by side
14 model years on record, from 2004 to 2017. Across them the pass rate runs from 90.3% to 99.0% — a spread of 8.7 points. The bar under each year is the item that failed it most often.
- 2004 90.3% malfunction indicator lamp…
- 2005 91.3% malfunction indicator lamp…
- 2006 90.3% malfunction indicator lamp…
- 2007 91.4% coil spring fractured or broken
- 2008 91.4% windscreen damaged but not…
- 2009 93.3% position lamp not working
- 2010 90.6% windscreen damaged but not…
- 2011 90.7% position lamp not working
- 2012 90.7% windscreen damaged but not…
- 2013 93.7% windscreen damaged but not…
- 2014 94.4% windscreen damaged but not…
- 2015 96.2% malfunction indicator lamp…
- 2016 97.6% has a cut in excess of the…
- 2017 99.0%headlamp aim too high
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 2017 Aston Martin DB9 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 2017 cars with a similar record
- Porsche 911 95.2%
- Lexus Rx 94.9%
- Porsche Cayman 94.6%
- Porsche Boxster 94.3%
- Audi A8 93.8%
- Lexus Nx 93.5%
Closest pass rates among 2017 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 2017 Aston Martin DB9 4 failure items · 5 advisories · 6 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 11 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 |
|---|---|---|---|---|
| Brakes | 3 | 27.30% | 20.89% | +6.41 |
| Lamps, reflectors and electrical equipment | 3 | 27.30% | 12.21% | +15.09 |
| Tyres | 2 | 18.20% | 19.76% | −1.56 |
| Suspension | 1 | 9.10% | 20.98% | −11.88 |
| Body, chassis, structure | 1 | 9.10% | 5.57% | +3.53 |
| Identification of the vehicle | 1 | 9.10% | 1.76% | +7.34 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Headlamp aim too high Lamps, reflectors and electrical equipment | Major | 1.0% | £30–80 |
| Individual direction indicators lens defective which has no effect on emitted light Lamps, reflectors and electrical equipment | Minor | 1.0% | £3–12 |
| Passenger's seat backrest cannot be secured in the upright position. Body, chassis, structure | Major | 1.0% | £80–250 |
| Stop lamp lens defective which has no effect on emitted light Lamps, reflectors and electrical equipment | Minor | 1.0% | £3–12 |
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 |
|---|---|---|---|
| Service brake performance excessively binding Brakes | Advisory | 3.1% | £60–150 |
| Has a bulge, caused by separation or partial failure of its structure Tyres | Advisory | 1.0% | £45–95 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 1.0% | £45–95 |
| Registration plates insecure Identification of the vehicle | Advisory | 1.0% | £20–80 |
| Shock absorbers has a serious fluid leak Suspension | Advisory | 1.0% | £30–75 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 94 | 98.9% | 11,093 mi |
| 30-60k | 3 | 100.0% | 41,763 mi |
Source: 97 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.
2017 DB9 MOT questions
What is the MOT pass rate for a 2017 Aston Martin DB9?
99.0% of the 97 2017 Aston Martin DB9 tests in this dataset passed, against a national average of 86.0% for cars first used in 2017. First-attempt pass rate: 99.0%.
What are the most common MOT failures on a 2017 Aston Martin DB9?
The three most recorded items are headlamp aim too high (1.03%), individual direction indicators lens defective which has no effect on emitted light (1.03%), passenger's seat backrest cannot be secured in the upright position. (1.03%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2017 Aston Martin DB9 MOT pass rate?
Yes. Cars under 30,000 miles passed 98.9% of the time, falling to 100.0% for those over 120,000 miles. The median 2017 Aston Martin DB9 in this dataset had covered 11,201 mi.
Does the season affect the 2017 Aston Martin DB9 MOT pass rate?
Tests recorded in the winter months (October–March) passed 100.0% of the time; summer months (April–September) passed 97.8%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.