How much does a 2003 AUDI S4 AVANT cost to run?

Estimated annual running cost is £2,907 (£242/month), including £1592 fuel, £760 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 2003 AUDI S4 AVANT?

The 2003 AUDI S4 AVANT has a 79% MOT pass rate based on 42 tests in 2026. This ranks 116 out of 445 cars from 2003.

Which year AUDI S4 AVANT is most reliable?

The 2011 AUDI S4 AVANT has the highest MOT pass rate at 100%. The least reliable year is 2006 at 70%.

AUDI S4 AVANT (2003)

Q: Is the 2003 AUDI S4 AVANT reliable?

Average reliability. Expect some repairs as it ages. 79% of AUDI S4 AVANTs from 2003 passed their MOT first time in 2026, based on 42 tests. That's 3 points below the national average of 82%.

Q: What is the average mileage for a 2003 AUDI S4 AVANT?

The average mileage for a 2003 AUDI S4 AVANT is 130,012 miles, which is below the expected 170,200 miles for a 23-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 42 real MOT tests.

Annual Cost

£2,907

£242/month

MOT Pass Rate

79%

Average

Road Tax

£760

Based on CC/year

Insurance

Grp 35-50

4163cc Petrol

Check Carefully

79% pass rate, £2907/year to run. Close to the national average.

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Petrol4163cc23 years old42 tests130k miles avg

Annual Running Costs

Fuel (Petrol, 4163cc)

~30 mpg

£1,592

Road Tax

Based on 4163cc

£760

MOT Test

£55

Predicted Repairs

£500

Total per year£2,907

Per month£242/mo

Per week£56/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

79% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the AUDI brand average of 90%.

At 23 years old, 79% of AUDI S4 AVANTs from 2003 passed their MOT first time in 2026. That's based on 42 tests across the UK. The average mileage at this age is 130,012 miles.

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How Does It Compare?

Rank among 2003 cars116th of 445(top 26%)

Rank among AUDI models985th of 1,079(top 91%)

vs national average-3%(82% avg)

vs 2003 cars average+7%(72% avg)

vs AUDI average-11%(90% avg)

Mileage Analysis

130,012

Average miles

170,200

Expected for age

The average 2003 AUDI S4 AVANT has 130,012 miles on the clock, which is below the expected 170,200 miles for a 23-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 2011 model with a 100% MOT pass rate, while the 2006 model has the lowest at 70%. The 2003 sits between the two at 79%.

AUDI S4 AVANT by Year

Year	Pass Rate	Tests	Avg Mileage
2012	96%	50	96,854 mi
2011	100%	54	94,508 mi
2010	85%	88	101,537 mi
2009	89%	92	100,885 mi
2007	93%	30	122,020 mi
2006	70%	64	113,870 mi
2005	84%	32	136,700 mi
2004	88%	76	117,351 mi
2003	79%	42	130,012 mi

Similar Cars to Consider

LAND ROVER RANGE ROVER SPORT

2005 · 4394cc Petrol

£2,247/year

82%

+3%

PORSCHE 911

2005 · 3824cc Petrol

£2,097/year

90%

+11%

LAND ROVER RANGE ROVER

2003 · 3950cc Petrol

£2,397/year

77%

-2%

ROVER 75

2004 · 4601cc Petrol

£2,597/year

69%

-10%

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About the 2003 AUDI S4 AVANT

The 2003 AUDI S4 AVANT is a premium performance with a 4163cc petrol engine. 42 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 2003, the average MOT pass rate is 72%, and this model beats that benchmark.

With an average of 130,012 miles at 23 years old, AUDI S4 AVANT owners tend to use this car less than the typical driver.

2003 AUDI S4 AVANT Fuel Costs

The 4163cc 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 2003 AUDI S4 AVANT?

Total estimated annual running cost is £2,907 (£242/month), broken down as £1592 fuel, £760 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 79% pass rate. Keeping on top of servicing will help avoid surprises.

AUDI S4 AVANT Reliability Trend

Newer AUDI S4 AVANTs show better MOT pass rates than older ones, with an average improvement of 11 percentage points.

Buying a Used 2003 AUDI S4 AVANT

At 23 years old, the AUDI S4 AVANT 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 2011 model has the highest pass rate at 100%. Note: with only 42 tests in our data, these figures should be treated as indicative rather than definitive.

Common Issues to Watch For

Based on the 2003 AUDI S4 AVANT's fuel type, age, and engine size, these are the most likely problem areas to check.

Timing Chain / Belt

Watch out

At 23 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 130k 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 2003 AUDI S4 AVANT stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
AUDI S4 AVANT(2003)	79%	£1592	£760	Grp 35-50	£2907
LAND ROVER RANGE ROVER SPORT(2005)	82%	£1592	£250	Grp 35-50	£2247-£660
PORSCHE 911(2005)	90%	£1592	£250	Grp 35-50	£2097-£810
LAND ROVER RANGE ROVER(2003)	77%	£1592	£250	Grp 35-50	£2397-£510
ROVER 75(2004)	69%	£1592	£250	Grp 35-50	£2597-£310

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.