How much does a 2006 AUDI S6 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 2006 AUDI S6?

The 2006 AUDI S6 has a 87% MOT pass rate based on 63 tests in 2026. This ranks 71 out of 575 cars from 2006.

Which year AUDI S6 is most reliable?

The 2013 AUDI S6 has the highest MOT pass rate at 96%. The least reliable year is 2007 at 84%.

What is the average mileage for a 2006 AUDI S6?

The average mileage for a 2006 AUDI S6 is 126,176 miles, which is in line with the expected 148,000 miles for a 20-year-old car, suggesting normal everyday use.

AUDI S6 (2006)

Q: Is the 2006 AUDI S6 reliable?

Good reliability. Occasional issues but generally solid. 87% of AUDI S6s from 2006 passed their MOT first time in 2026, based on 63 tests. That's 5 points above the national average of 82%.

Running costs, reliability data, and common problems from 63 real MOT tests.

Annual Cost

£2,757

£230/month

MOT Pass Rate

87%

Good

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

5204cc Petrol

Solid Option

87% pass rate, £2757/year to run. 5 points above average.

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Petrol5204cc20 years old63 tests126k 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

87% MOT pass rate(Good)

0%National avg: 82%100%

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.

At 20 years old, 87% of AUDI S6s from 2006 passed their MOT first time in 2026. That's based on 63 tests across the UK. The average mileage at this age is 126,176 miles.

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How Does It Compare?

Rank among 2006 cars71th of 575(top 12%)

Rank among AUDI models836th of 1,079(top 77%)

vs national average+5%(82% avg)

vs 2006 cars average+14%(73% avg)

vs AUDI average-3%(90% avg)

Mileage Analysis

126,176

Average miles

148,000

Expected for age

The average 2006 AUDI S6 has 126,176 miles on the clock, which is in line with the expected 148,000 miles for a 20-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2013 model with a 96% MOT pass rate, while the 2007 model has the lowest at 84%. The 2006 sits between the two at 87%.

AUDI S6 by Year

Year	Pass Rate	Tests	Avg Mileage
2014	89%	36	78,960 mi
2013	96%	79	93,087 mi
2008	83%	41	101,397 mi
2007	84%	51	109,485 mi
2006	87%	63	126,176 mi

Similar Cars to Consider

BMW X5

2005 · 4799cc Petrol

£2,397/year

77%

-10%

MERCEDES CLK

2004 · 4966cc Petrol

£2,397/year

76%

-11%

MERCEDES SL

2004 · 5513cc Petrol

£2,247/year

88%

+1%

MERCEDES ML

2006 · 4966cc Petrol

£2,247/year

80%

-7%

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About the 2006 AUDI S6

The 2006 AUDI S6 is a premium performance with a 5204cc petrol engine. 63 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 12% of all 2006 cars for reliability.

With an average of 126,176 miles at 20 years old, AUDI S6 owners drive about as much as the UK average.

2006 AUDI S6 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 2006 AUDI S6?

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 87% pass rate. Keeping on top of servicing will help avoid surprises.

AUDI S6 Reliability Trend

The AUDI S6 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Buying a Used 2006 AUDI S6

At 20 years old, the AUDI S6 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 96%. Note: with only 63 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 2006 AUDI S6's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 20 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

Watch out

With an average of 126k 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.

Engine Mounts

Medium risk

Worn engine mounts cause excessive vibration and movement. Replacement costs £150-£400 per mount. Check for vibration at idle with the bonnet open.

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 2006 AUDI S6 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
AUDI S6(2006)	87%	£1592	£760	Grp 35-50	£2757
BMW X5(2005)	77%	£1592	£250	Grp 35-50	£2397-£360
MERCEDES CLK(2004)	76%	£1592	£250	Grp 35-50	£2397-£360
MERCEDES SL(2004)	88%	£1592	£250	Grp 35-50	£2247-£510
MERCEDES ML(2006)	80%	£1592	£250	Grp 35-50	£2247-£510

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.