Aston Martin DB9 reliability, MPG and running costs
Figures updated
The Aston Martin DB9 is a car. In 2024 MOT tests it scored 286 for reliability (100 is average), ranking 5 of 442, and 9.8% failed first time against a UK average of 28.5%. Its most common MOT failure is position lamp (1.4% of tests).
Ranked 5 of 442 cars in the 2024 MOT Reliability League
In 2024, 4,289 Aston Martin DB9s aged 3 to 20 had an MOT and 9.8% failed first time (UK average 28.5%). Taking age and mileage into account, the Aston Martin DB9 is 65% less likely to fail than the average car of the same age and mileage.
First-time fail rate
9.8%
UK 28.5%
Fail rate at 3 years
–
UK 12.7%
Average miles a year
2,600
Typical age at test: 17 years
Aston Martin DB9 MOT failure rate by age
Most common Aston Martin DB9 MOT faults
- Position lamp: not working1.4% of tests
- Malfunction indicator lamp: inoperative or indicates a malfunction1.4% of tests
- Coil spring: fractured or broken1.1% of tests
- Wipers: does not clear the windscreen effectively1.0% of tests
- Headlamp aim: too low0.8% of tests
- Stop lamp: not working0.6% of tests
What the Aston Martin DB9 fails on
| Area | Tests failing | vs similar cars |
|---|---|---|
| Lights and electrics | 4.2% | ▼ 63% less often |
| Visibility | 1.9% | ▼ 65% less often |
| Brakes | 1.8% | ▼ 72% less often |
| Exhaust and emissions | 1.5% | ▼ 47% less often |
| Suspension | 1.5% | ▼ 83% less often |
| Tyres | 1.2% | ▼ 73% less often |
| Body and structure | 0.5% | ▼ 88% less often |
| Wheels | 0.4% | ▲ 1.7× as often |
| Seat belts and airbags | 0.3% | ▼ 75% less often |
| Steering | 0.1% | ▼ 91% less often |
What MPG does the Aston Martin DB9 do?
Official economy for the Aston Martin DB9 ranges from 15.8 to 20.2mpg across the 9 versions listed by the Vehicle Certification Agency (2004–2017). A typical petrol version manages 17.2mpg. Expect 10–15% less in real-world driving.
Work out a journey's fuel costHow much is road tax on a Aston Martin DB9?
Any Aston Martin DB9 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A Aston Martin DB9 registered between March 2001 and March 2017 is taxed on its CO2: £790 a year.
Work out tax for a specific carAston Martin DB9 specs and running costs
Official figures for 9 versions sold in the UK between 2004 and 2017.
Fuel types
Petrol
Official economy
15.8–20.2 mpg
CO2
325–421 g/km
| Version | Fuel | Economy | CO2 | Car tax |
|---|---|---|---|---|
| DB9 GT, MY2016 Coupé and VolanteA6 · listed 2017 | Petrol | 20.2 mpg | 325g | £200 |
| DB9 MY2015, from May 2014 Coupé and ConvertibleA6 · listed 2016 | Petrol | 20.2 mpg | 325g | £790 |
| DB9 Coupé & Convertible March 2010 onwardsAutomatic · listed 2013 | Petrol | 19.3 mpg | 345g | £790 |
| DB9 Coupé & Convertible March 2010 onwardsManual · listed 2013 | Petrol | 17.2 mpg | 389g | £790 |
| DB9 Coupé & Convertible March 2010 onwardsA6 · listed 2012 | Petrol | 19.3 mpg | 345g | £790 |
| DB9 Coupé & Convertible March 2010 onwardsM6 · listed 2012 | Petrol | 17.2 mpg | 389g | £790 |
| DB9 Coupé & ConvertibleA6 · listed 2008 | Petrol | 17.1 mpg | 394g | £790 |
| DB9 Coupé & ConvertibleM6 · listed 2008 | Petrol | 15.8 mpg | 421g | £790 |
| DB9 Coupe & ConvertibleA6 · listed 2004 | Petrol | 17.1 mpg | 394g | £445 |
Economy and CO2 are official NEDC (before 2018) or WLTP figures. Car tax is the yearly rate at current rates for a car first registered in the year listed, before any expensive car supplement.
What a Aston Martin DB9 costs to fuel
- petrol, typical official 17.2mpg…
Official figures are usually 10–15% better than real-world driving.
Work out a journey in a Aston Martin DB9Buying a used Aston Martin DB9?
Check the MOT history of the exact car: every result, advisory and mileage reading, free.
Other Aston Martin models
Frequently asked questions
›Is the Aston Martin DB9 reliable?
Its MOT record is better than average: the Aston Martin DB9 is 65% less likely to fail than the average car of the same age and mileage, with a reliability score of 286 in our 2024 league (100 is average).
›What are common problems with the Aston Martin DB9?
The most common MOT fault is “Position lamp: not working”, found in 1.4% of tests.
›What MPG does the Aston Martin DB9 do?
Official economy for the Aston Martin DB9 ranges from 15.8 to 20.2mpg across the 9 versions listed by the Vehicle Certification Agency (2004–2017). A typical petrol version manages 17.2mpg. Expect 10–15% less in real-world driving.
›How much is road tax on a Aston Martin DB9?
Any Aston Martin DB9 first registered from April 2017 pays the standard rate of £200 a year after its first year (2026/27 rates). A Aston Martin DB9 registered between March 2001 and March 2017 is taxed on its CO2: £790 a year.
›How many Aston Martin DB9s fail their MOT?
9.8% of Aston Martin DB9s aged 3 to 20 failed their MOT first time in 2024.
Sources: DVSA anonymised MOT tests 2024, all versions of the Aston Martin DB9 combined (Open Government Licence v3.0); official economy and CO2 from Vehicle Certification Agency data, © Crown copyright. VCA cannot accept liability for its accuracy. How we calculate the league.