How much does a 2008 AUDI S8 cost to run?

Estimated annual running cost is £2,757 (£230/month), including £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs.

What is the MOT pass rate for a 2008 AUDI S8?

The 2008 AUDI S8 has a 89% MOT pass rate based on 37 tests in 2026. This ranks 71 out of 589 cars from 2008.

Which year AUDI S8 is most reliable?

The 2013 AUDI S8 has the highest MOT pass rate at 99%. The least reliable year is 2007 at 78%.

AUDI S8 (2008)

Q: Is the 2008 AUDI S8 reliable?

Good reliability. Occasional issues but generally solid. 89% of AUDI S8s from 2008 passed their MOT first time in 2026, based on 37 tests. That's 7 points above the national average of 82%.

Q: What is the average mileage for a 2008 AUDI S8?

The average mileage for a 2008 AUDI S8 is 95,286 miles, which is below the expected 133,200 miles for a 18-year-old car. This suggests lighter use than average, which generally means less wear on major components.

Running costs, reliability data, and common problems from 37 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

89%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

5204cc Petrol

Solid Option

89% pass rate, £2757/year to run. 7 points above average.

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Petrol5204cc18 years old37 tests95k miles avg

Annual Running Costs

Fuel (Petrol, 5204cc)

~30 mpg

£1,592

Road Tax

Based on 5204cc

£760

MOT Test

£55

Predicted Repairs

£350

Total per year£2,757

Per month£230/mo

Per week£53/wk

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

89% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.

At 18 years old, 89% of AUDI S8s from 2008 passed their MOT first time in 2026. That's based on 37 tests across the UK. The average mileage at this age is 95,286 miles.

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How Does It Compare?

Rank among 2008 cars71th of 589(top 12%)

Rank among AUDI models767th of 1,079(top 71%)

vs national average+7%(82% avg)

vs 2008 cars average+16%(73% avg)

vs AUDI average-1%(90% avg)

Mileage Analysis

95,286

Average miles

133,200

Expected for age

The average 2008 AUDI S8 has 95,286 miles on the clock, which is below the expected 133,200 miles for a 18-year-old car. This suggests lighter use than average, which generally means less wear on major components.

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Best Year to Buy?

The most reliable year is the 2013 model with a 99% MOT pass rate, while the 2007 model has the lowest at 78%. The 2008 sits between the two at 89%.

AUDI S8 by Year

Year	Pass Rate	Tests	Avg Mileage
2013	99%	87	87,380 mi
2008	89%	37	95,286 mi
2007	78%	68	92,767 mi
2002	82%	45	141,981 mi

Similar Cars to Consider

BMW X5

2010 · 4799cc Petrol

£2,247/year

86%

-3%

AUDI A6

2009 · 4991cc Petrol

£2,247/year

81%

-8%

MERCEDES ML

2006 · 4966cc Petrol

£2,247/year

80%

-9%

MERCEDES SL

2008 · 5462cc Petrol

£2,097/year

90%

+1%

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About the 2008 AUDI S8

The 2008 AUDI S8 is a premium performance with a 5204cc petrol engine. 37 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 12% of all 2008 cars for reliability.

With an average of 95,286 miles at 18 years old, AUDI S8 owners tend to use this car less than the typical driver.

2008 AUDI S8 Fuel Costs

The 5204cc 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 2008 AUDI S8?

Total estimated annual running cost is £2,757 (£230/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.

Buying a Used 2008 AUDI S8

At 18 years old, the AUDI S8 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 2013 model has the highest pass rate at 99%. Note: with only 37 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 2008 AUDI S8's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 18 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.

Clutch Wear

Medium risk

With an average of 95k miles, clutch replacement may be due (typical lifespan 60,000-100,000 miles). Budget £400-£800 for a new clutch kit.

Brake Discs and Pads

Medium risk

High-mileage cars often need brake disc replacement, not just pads. A full set of discs and pads costs £200-£500 per axle.

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 2008 AUDI S8 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
AUDI S8(2008)	89%	£1592	£760	Grp 35-50	£2757
BMW X5(2010)	86%	£1592	£250	Grp 35-50	£2247-£510
AUDI A6(2009)	81%	£1592	£250	Grp 35-50	£2247-£510
MERCEDES ML(2006)	80%	£1592	£250	Grp 35-50	£2247-£510
MERCEDES SL(2008)	90%	£1592	£250	Grp 35-50	£2097-£660

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.