The Aston Martin DB9 does 14.3 mpg combined (12.3 city, 18.9 highway), which works out to about $2,685 a year in fuel at $3.20 a gallon and 12,000 miles. Against other V8 cars it sits below the average of 16.1 mpg.
Every Aston Martin DB9 engine, compared
The Aston Martin DB9 was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 5.9L 12-cyl | 12.3 / 18.9 | 2005–2016 | $2,685 |
What that actually costs
The Aston Martin DB9 burns a gallon every 14.3 miles, so 12,000 miles takes about 839 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.224 |
| Fuel per year | $2,685 |
| Fuel over five years | $13,425 |
| Against other V8 cars | +$300 a year |
| EPA's own estimate | $5,446 a year |
City or highway — who is this car for
The Aston Martin DB9 gives up 6.6 mpg the moment you leave the motorway — 18.9 out there against 12.3 in town, a 54% drop worth $1,090 a year. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 12.3 mpg | $3,122 a year if you only drive in town |
| Highway | 18.9 mpg | $2,032 a year if you mostly commute |
| Gap | +6.6 mpg (54%) | Wide — this car dislikes traffic |
How the DB9 changed over the years
The DB9 peaked in 2016 at 15 mpg (13 city, 19 highway) and was at its thirstiest in 2008 at 13 — 2 mpg apart, or $394 a year in fuel between buying one year and the other. The 2016 car does 15. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2016 | 13 / 19 | 1 | $2,560 | |
| 2015 | 13 / 19 | 1 | $2,560 | |
| 2014 | 13 / 19 | 1 | $2,560 | |
| 2013 | 13 / 19 | 1 | $2,560 | |
| 2012 | 13 / 20 | 1 | $2,560 | |
| 2011 | 13 / 20 | 1 | $2,560 | |
| 2010 | 13 / 20 | 1 | $2,560 | |
| 2009 | 12 / 19 | 1 | $2,743 | |
| 2008 | 11 / 18 | 1 | $2,954 | |
| 2007 | 11 / 18 | 1 | $2,954 | |
| 2006 | 11 / 18 | 1 | $2,954 | |
| 2005 | 11 / 18 | 1 | $2,954 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 12 EPA ratings of the Aston Martin DB9 — 1 engine across 2005–2016. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $5,446. Full method.
Frequently asked questions
What mpg does the Aston Martin DB9 get?
14.3 mpg combined on average — 12.3 in the city and 18.9 on the highway, per EPA ratings across 2005–2016.
How much does a Aston Martin DB9 cost in fuel per year?
About $2,685 at 12,000 miles and $3.20 a gallon — roughly $13,425 over five years, or 0.224 dollars a mile.
Which DB9 engine is the most economical?
The 5.9L 12-cyl at 14.3 mpg.
Is the DB9 good on fuel compared with similar cars?
Against other V8 cars it sits below the average of 16.1 mpg, computed across 3323 ratings.
Are these real-world DB9 figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Aston Martin DB9 is $5,446 against the $2,685 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
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