Is the 2003 AUDI S3 reliable?

Average reliability. Expect some repairs as it ages. 72% of AUDI S3s from 2003 passed their MOT first time in 2026, based on 235 tests. That's 10 points below the national average of 82%.

How much does a 2003 AUDI S3 cost to run?

Estimated annual running cost is £2,197 (£183/month), including £1327 fuel, £315 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 2003 AUDI S3?

The 2003 AUDI S3 has a 72% MOT pass rate based on 235 tests in 2026. This ranks 253 out of 445 cars from 2003.

Which year AUDI S3 is most reliable?

The 2017 AUDI S3 has the highest MOT pass rate at 96%. The least reliable year is 2003 at 72%.

What is the average mileage for a 2003 AUDI S3?

The average mileage for a 2003 AUDI S3 is 137,030 miles, which is in line with the expected 170,200 miles for a 23-year-old car, suggesting normal everyday use.

AUDI S3 (2003)

Running costs, reliability data, and common problems from 235 real MOT tests.

Annual Cost

£2,197

£183/month

MOT Pass Rate

72%

Average

Road Tax

£315

Based on CC/year

Insurance

Grp 18-32

1781cc Petrol

Check Carefully

72% pass rate, £2197/year to run. 10 points below average.

Buying this car? Check for finance, write-offs & theft

£4.99

Check a specific AUDI S3

Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.

Petrol1781cc23 years old235 tests137k miles avg

Annual Running Costs

Fuel (Petrol, 1781cc)

~36 mpg

£1,327

Road Tax

Based on 1781cc

£315

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£500

Total per year£2,197

Per month£183/mo

Per week£42/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

🛡️

Get an insurance quote for this AUDI S3

Compare quotes and find the best deal

Reliability Verdict

72% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's 10 points below the national average of 82%. It falls below the AUDI brand average of 90%.

At 23 years old, 72% of AUDI S3s from 2003 passed their MOT first time in 2026. That's based on 235 tests across the UK. The average mileage at this age is 137,030 miles.

Got a AUDI S3 you're looking at?

Enter the reg plate to check its specific MOT history, mileage, and health score.

How Does It Compare?

Rank among 2003 cars253th of 445(top 57%)

Rank among AUDI models1062th of 1,079(top 98%)

vs national average-10%(82% avg)

vs 2003 cars average+0%(72% avg)

vs AUDI average-18%(90% avg)

Mileage Analysis

137,030

Average miles

170,200

Expected for age

The average 2003 AUDI S3 has 137,030 miles on the clock, which is in line with the expected 170,200 miles for a 23-year-old car, suggesting normal everyday use.

Looking at a specific AUDI S3?

Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.

Best Year to Buy?

The most reliable year is the 2017 model with a 96% MOT pass rate, while the 2003 model has the lowest at 72%. Consider a different year if reliability is a priority.

AUDI S3 by Year

Year	Pass Rate	Tests	Avg Mileage
2019	96%	49	32,831 mi
2018	93%	100	48,229 mi
2017	96%	135	60,095 mi
2016	93%	190	61,138 mi
2015	94%	537	70,456 mi
2014	91%	1,975	75,271 mi
2013	92%	616	80,060 mi
2012	87%	341	88,186 mi
2011	87%	835	89,620 mi
2010	85%	1,034	96,246 mi
2009	88%	643	100,681 mi
2008	85%	620	114,238 mi
2007	84%	671	117,265 mi
2006	81%	54	112,877 mi
2003	72%	235	137,030 mi
2002	80%	362	128,988 mi
2001	80%	237	123,516 mi
2000	79%	141	132,942 mi
1999	76%	132	143,273 mi

Similar Cars to Consider

MINI MINI

2005 · 1598cc Petrol

£1,827/year

71%

-1%

FORD FOCUS

2005 · 1596cc Petrol

£1,827/year

71%

-1%

FORD FIESTA

2003 · 1388cc Petrol

£1,722/year

71%

-1%

TOYOTA YARIS

2005 · 1299cc Petrol

£1,722/year

73%

+1%

Check a Specific Audi S3

Enter a reg plate to get the full MOT history, health score, and mileage verification.

Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.

About the 2003 AUDI S3

The 2003 AUDI S3 is a premium with a 1781cc petrol engine. 235 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2003, the average MOT pass rate is 72%, and this model falls short of that benchmark.

With an average of 137,030 miles at 23 years old, AUDI S3 owners drive about as much as the UK average.

2003 AUDI S3 Fuel Costs

The 1781cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 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 S3?

Total estimated annual running cost is £2,197 (£183/month), broken down as £1327 fuel, £315 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 72% pass rate. Keeping on top of servicing will help avoid surprises.

AUDI S3 Reliability Trend

Newer AUDI S3s show better MOT pass rates than older ones, with an average improvement of 10 percentage points.

Buying a Used 2003 AUDI S3

At 23 years old, the AUDI S3 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

Based on the 2003 AUDI S3'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.

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 137k 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 S3 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
AUDI S3(2003)	72%	£1327	£315	Grp 18-32	£2197
MINI MINI(2005)	71%	£1137	£135	Grp 12-25	£1827-£370
FORD FOCUS(2005)	71%	£1137	£135	Grp 12-25	£1827-£370
FORD FIESTA(2003)	71%	£1137	£30	Grp 8-20	£1722-£475
TOYOTA YARIS(2005)	73%	£1137	£30	Grp 8-20	£1722-£475

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.