Is the 2003 AUDI A3 reliable?

Average reliability. Expect some repairs as it ages. 74% of AUDI A3s from 2003 passed their MOT first time in 2026, based on 3,274 tests. That's 8 points below the national average of 82%.

How much does a 2003 AUDI A3 cost to run?

Estimated annual running cost is £1,857 (£155/month), including £1037 fuel, £265 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 2003 AUDI A3?

The 2003 AUDI A3 has a 74% MOT pass rate based on 3,274 tests in 2026. This ranks 189 out of 445 cars from 2003.

Which year AUDI A3 is most reliable?

The 2021 AUDI A3 has the highest MOT pass rate at 94%. The least reliable year is 1997 at 68%.

What is the average mileage for a 2003 AUDI A3?

The average mileage for a 2003 AUDI A3 is 137,992 miles, which is in line with the expected 170,200 miles for a 23-year-old car, suggesting normal everyday use.

AUDI A3 (2003)

Running costs, reliability data, and common problems from 3,274 real MOT tests.

Annual Cost

£1,857

£155/month

MOT Pass Rate

74%

Average

Road Tax

£265

Based on CC/year

Insurance

Grp 18-32

1968cc Diesel

Check Carefully

74% pass rate, £1857/year to run. 8 points below average.

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Diesel1968cc23 years old3,274 tests138k miles avg

Annual Running Costs

Fuel (Diesel, 1968cc)

~48 mpg

£1,037

Road Tax

Based on 1968cc

£265

MOT Test

£55

Predicted Repairs

Higher estimate due to low pass rate

£500

Total per year£1,857

Per month£155/mo

Per week£36/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

74% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's 8 points below the national average of 82%. It falls below the AUDI brand average of 90%.

At 23 years old, 74% of AUDI A3s from 2003 passed their MOT first time in 2026. That's based on 3,274 tests across the UK. The average mileage at this age is 137,992 miles.

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How Does It Compare?

Rank among 2003 cars189th of 445(top 42%)

Rank among AUDI models1037th of 1,079(top 96%)

vs national average-8%(82% avg)

vs 2003 cars average+2%(72% avg)

vs AUDI average-16%(90% avg)

Mileage Analysis

137,992

Average miles

170,200

Expected for age

The average 2003 AUDI A3 has 137,992 miles on the clock, which is in line with the expected 170,200 miles for a 23-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2021 model with a 94% MOT pass rate, while the 1997 model has the lowest at 68%. The 2003 sits between the two at 74%.

AUDI A3 by Year

Year	Pass Rate	Tests	Avg Mileage
2021	94%	547	26,069 mi
2020	93%	10,059	34,019 mi
2019	92%	41,215	42,207 mi
2018	92%	54,110	49,870 mi
2017	91%	68,023	59,583 mi
2016	90%	75,823	68,522 mi
2015	88%	80,797	78,897 mi
2014	86%	77,639	89,137 mi
2013	84%	55,981	99,882 mi
2012	80%	52,278	108,680 mi
2011	79%	44,226	116,751 mi
2010	77%	50,328	117,064 mi
2009	77%	46,405	123,921 mi
2008	76%	39,032	129,049 mi
2007	75%	30,361	136,508 mi
2006	73%	24,088	138,100 mi
2005	72%	15,865	139,734 mi
2004	72%	7,027	137,597 mi
2003	74%	3,274	137,992 mi
2002	72%	2,361	141,296 mi
2001	74%	1,685	130,310 mi
2000	71%	1,019	128,899 mi
1999	72%	888	127,410 mi
1998	70%	872	125,923 mi
1997	68%	385	128,771 mi

Similar Cars to Consider

VOLKSWAGEN GOLF

2005 · 1896cc Diesel

£1,727/year

72%

-2%

VAUXHALL ASTRA

2005 · 1598cc Diesel

£1,795/year

69%

-5%

HONDA CIVIC

2005 · 2204cc Diesel

£2,050/year

73%

-1%

VOLKSWAGEN TRANSPORTER

2005 · 2460cc Diesel

£2,050/year

72%

-2%

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About the 2003 AUDI A3

The 2003 AUDI A3 is a premium with a 1968cc diesel engine. 3,274 of these vehicles were MOT tested in 2026, making it a reasonably common sight 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 137,992 miles at 23 years old, AUDI A3 owners drive about as much as the UK average.

2003 AUDI A3 Fuel Costs

The 1968cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.

What does it cost to own a 2003 AUDI A3?

Total estimated annual running cost is £1,857 (£155/month), broken down as £1037 fuel, £265 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 74% pass rate. Keeping on top of servicing will help avoid surprises.

AUDI A3 Reliability Trend

Newer AUDI A3s show better MOT pass rates than older ones, with an average improvement of 14 percentage points.

Buying a Used 2003 AUDI A3

At 23 years old, the AUDI A3 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 2021 model has the highest pass rate at 94%.

Common Issues to Watch For

Based on the 2003 AUDI A3's fuel type, age, and engine size, these are the most likely problem areas to check.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Watch out

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

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 138k 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 A3 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
AUDI A3(2003)	74%	£1037	£265	Grp 18-32	£1857
VOLKSWAGEN GOLF(2005)	72%	£1037	£135	Grp 18-32	£1727-£130
VAUXHALL ASTRA(2005)	69%	£905	£135	Grp 12-25	£1795-£62
HONDA CIVIC(2005)	73%	£1245	£250	Grp 25-38	£2050+£193
VOLKSWAGEN TRANSPORTER(2005)	72%	£1245	£250	Grp 25-38	£2050+£193

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.