ASTON MARTIN DB9 (2011)
Running costs, reliability data, and common problems from 221 real MOT tests.
Annual Cost
£2,607
£217/month
MOT Pass Rate
93%
Excellent
Road Tax
£760
Based on CC/year
Insurance
Grp 35-50
5935cc Petrol
Great Choice
93% pass rate, £2607/year to run. 11 points above average.
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Annual Running Costs
~30 mpg
Based on 5935cc
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%.
At 15 years old, 93% of ASTON MARTIN DB9s from 2011 passed their MOT first time in 2026. That's based on 221 tests across the UK. The average mileage at this age is 35,071 miles.
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How Does It Compare?
Mileage Analysis
35,071
Average miles
111,000
Expected for age
The average 2011 ASTON MARTIN DB9 has 35,071 miles on the clock, which is significantly below the expected 111,000 miles for a 15-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.
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Best Year to Buy?
The most reliable year is the 2017 model with a 99% MOT pass rate, while the 2004 model has the lowest at 91%. The 2011 sits between the two at 93%.
ASTON MARTIN DB9 by Year
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2017 | 99% | 97 | 14,436 mi | |
| 2016 | 97% | 363 | 21,029 mi | |
| 2015 | 97% | 424 | 22,406 mi | |
| 2014 | 97% | 386 | 27,379 mi | |
| 2013 | 94% | 463 | 32,444 mi | |
| 2012 | 94% | 187 | 38,809 mi | |
| 2011 | 93% | 221 | 35,071 mi | |
| 2010 | 92% | 438 | 40,263 mi | |
| 2009 | 95% | 494 | 36,995 mi | |
| 2008 | 92% | 1,100 | 43,233 mi | |
| 2007 | 94% | 1,286 | 43,791 mi | |
| 2006 | 93% | 1,167 | 41,311 mi | |
| 2005 | 93% | 2,229 | 47,412 mi | |
| 2004 | 91% | 541 | 50,936 mi |
Similar Cars to Consider
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About the 2011 ASTON MARTIN DB9
The 2011 ASTON MARTIN DB9 is a luxury with a 5935cc petrol engine. 221 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It ranks in the top 10% of all 2011 cars for reliability.
With an average of 35,071 miles at 15 years old, ASTON MARTIN DB9 owners tend to use this car less than the typical driver. Very low mileage could mean the car has been garaged or used only for short trips, which can cause its own issues like battery drain and moisture buildup.
2011 ASTON MARTIN DB9 Fuel Costs
The 5935cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2011 ASTON MARTIN DB9?
Total estimated annual running cost is £2,607 (£217/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
ASTON MARTIN DB9 Reliability Trend
The ASTON MARTIN DB9 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2011 ASTON MARTIN DB9
At 15 years old, the ASTON MARTIN DB9 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2017 model has the highest pass rate at 99%.
Common Issues to Watch For
Based on the 2011 ASTON MARTIN DB9's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 15 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
Oil Consumption
Medium riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Rust and Corrosion
Watch outAt 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.
Suspension Bushings
Watch outRubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2011 ASTON MARTIN DB9 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| ASTON MARTIN DB9(2011) | 93% | £1592 | £760 | Grp 35-50 | £2607 |
| MERCEDES SLK(2013) | 85% | £1592 | £250 | Grp 35-50 | £2247-£360 |
| BENTLEY CONTINENTAL(2012) | 95% | £1592 | £250 | Grp 35-50 | £2097-£510 |
| MERCEDES S-CLASS(2011) | 87% | £1592 | £250 | Grp 35-50 | £2247-£360 |
| MERCEDES SL(2009) | 87% | £1592 | £250 | Grp 35-50 | £2247-£360 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
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