Aston Martin DB9 (2004)

Estimated running costs and MOT pass rates from 541 MOT tests in 2024.

Annual Cost

£3,003

£250/month

MOT Pass Rate

91%

Excellent

Road Tax

£790

Estimated/year

Est. Insurance

Grp 35-50

5935cc Petrol

Great Choice

91% pass rate, £3,003/year to run. 9 points above average.

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Petrol5935cc22 years old541 tests51k miles avg

Annual Running Costs

Fuel (Petrol, 5935cc)

~30 mpg

£1,958

Road Tax

Estimated CO2 band

£790

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£3,003

Per month£250/mo

Per week£58/wk

Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included.

Reliability Verdict

91% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 9 points above the average of 82% across all models in our data.

91% of MOT tests on Aston Martin DB9s from 2004 ended in a pass in 2024, when they were about 20 years old. That's based on 541 tests across the UK, retests included. The average mileage recorded at those tests was 50,936 miles.

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How Does It Compare?

Rank among 2004 models30th of 470(top 7%)

Rank among Aston Martin models92nd of 114(bottom 21%)

vs average of all models+9%(82% avg)

vs 2004 models average+19%(72% avg)

vs Aston Martin average-3%(94% avg)

Mileage Analysis

50,936

Average miles

148,000

Expected for age

The average 2004 Aston Martin DB9 had 50,936 miles on the clock at its 2024 MOT, which is significantly below the expected 148,000 miles for a 20-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?

Of the years with at least 100 tests, the 2015 model has the highest MOT pass rate at 97%, while the 2004 model has the lowest at 91%. Consider a different year if reliability is a priority. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.

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

Mercedes SL

2004 · 5513cc Petrol

£3,153/year

88%

-3%

Bentley Continental

2006 · 5998cc Petrol

£3,003/year

92%

+1%

Aston Martin DB7

2002 · 5935cc Petrol

£3,003/year

92%

+1%

Mercedes CL

2002 · 5439cc Petrol

£3,153/year

82%

-9%

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About the 2004 Aston Martin DB9

The 2004 Aston Martin DB9 is a luxury car. Our records list a 5935cc petrol engine, though engines vary between versions. 541 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It ranks in the top 7% of all 2004 models for MOT pass rate.

With an average of 50,936 miles recorded at its 2024 MOT tests, 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.

2004 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 £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).

What does it cost to own a 2004 Aston Martin DB9?

Total estimated annual running cost is £3,003 (£250/month), broken down as £1,958 fuel, £790 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% 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 2 percentage points.

Buying a Used 2004 Aston Martin DB9

At 22 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.

Common Issues to Watch For

These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.

Timing Chain / Belt

Watch out

At 22 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 risk

Larger 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 out

At 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 out

Rubber 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 risk

Always 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 2004 Aston Martin DB9 stacks up against similar cars for estimated annual running costs, insurance group, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Est. Ins. Group	Total/yr
Aston Martin DB9(2004)	91%	£1,958	£790	Grp 35-50	£3,003
Mercedes SL(2004)	88%	£1,958	£790	Grp 35-50	£3,153+£150
Bentley Continental(2006)	92%	£1,958	£790	Grp 35-50	£3,003same
Aston Martin DB7(2002)	92%	£1,958	£790	Grp 35-50	£3,003same
Mercedes CL(2002)	82%	£1,958	£790	Grp 35-50	£3,153+£150

Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.

Questions about the 2004 Aston Martin DB9

Is the 2004 Aston Martin DB9 reliable?

Excellent reliability. Very few MOT failures. 91% of MOT tests on 2004 Aston Martin DB9s ended in a pass, from 541 tests (DVSA MOT data for tests in 2024, retests included). That's 9 points above the average of 82% across all models in the same data.

How much does a 2004 Aston Martin DB9 cost to run?

Our estimate is £3,003 a year (£250 a month): £1,958 fuel, £790 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.

What is the MOT pass rate for a 2004 Aston Martin DB9?

91% of 541 MOT tests on the 2004 Aston Martin DB9 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 30th of 470 models first registered in 2004 (top 7%).

Which year Aston Martin DB9 has the best MOT pass rate?

Of the years with at least 100 tests, the 2015 Aston Martin DB9 has the highest MOT pass rate at 97% and the 2004 the lowest at 91%. Newer cars usually pass more often simply because they are younger and have done fewer miles.

What is the average mileage for a 2004 Aston Martin DB9?

The average mileage recorded at MOT tests on the 2004 Aston Martin DB9 is 50,936 miles, which is significantly below the expected 148,000 miles for a 20-year-old car. Low-mileage examples may have spent time sitting unused, so check for issues like corroded brakes or perished rubber seals.