Is the 2020 AUDI A3 reliable?

Excellent reliability. Very few MOT failures. 93% of AUDI A3s from 2020 passed their MOT first time in 2026, based on 10,059 tests. That's 11 points above the national average of 82%.

How much does a 2020 AUDI A3 cost to run?

Estimated annual running cost is £1,405 (£117/month), including £955 fuel, £195 road tax, £55 MOT, and £200 predicted repairs.

What is the MOT pass rate for a 2020 AUDI A3?

The 2020 AUDI A3 has a 93% MOT pass rate based on 10,059 tests in 2026. This ranks 936 out of 2596 cars from 2020.

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%.

AUDI A3 (2020)

Q: What is the average mileage for a 2020 AUDI A3?

The average mileage for a 2020 AUDI A3 is 34,019 miles, which is below the expected 44,400 miles for a 6-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 10,059 real MOT tests.

Annual Cost

£1,405

£117/month

MOT Pass Rate

93%

Excellent

Road Tax

£195

Flat rate/year

Insurance

Grp 1-8

999cc Petrol

Great Choice

93% pass rate, £1405/year to run. 11 points above average.

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Petrol999cc6 years old10,059 tests34k miles avg

Annual Running Costs

Fuel (Petrol, 999cc)

~50 mpg

£955

Road Tax

Flat rate (post-2017)

£195

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£1,405

Per month£117/mo

Per week£27/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

93% MOT pass rate(Excellent)

0%National avg: 82%100%

Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%.

At 6 years old, 93% of AUDI A3s from 2020 passed their MOT first time in 2026. That's based on 10,059 tests across the UK. The average mileage at this age is 34,019 miles.

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How Does It Compare?

Rank among 2020 cars936th of 2,596(top 36%)

Rank among AUDI models404th of 1,079(top 37%)

vs national average+11%(82% avg)

vs 2020 cars average+1%(92% avg)

vs AUDI average+3%(90% avg)

Mileage Analysis

34,019

Average miles

44,400

Expected for age

The average 2020 AUDI A3 has 34,019 miles on the clock, which is below the expected 44,400 miles for a 6-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 2021 model with a 94% MOT pass rate, while the 1997 model has the lowest at 68%. The 2020 sits between the two at 93%.

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

FORD FIESTA

2018 · 998cc Petrol

£1,400/year

90%

-3%

VOLKSWAGEN GOLF

2019 · 1498cc Petrol

£1,582/year

92%

-1%

VAUXHALL CORSA

2018 · 1398cc Petrol

£1,732/year

85%

-8%

NISSAN QASHQAI

2018 · 1200cc Petrol

£1,550/year

87%

-6%

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About the 2020 AUDI A3

The 2020 AUDI A3 is a premium with a 999cc petrol engine. 10,059 of these vehicles were MOT tested in 2026, making it one of the most commonly tested cars on UK roads. Among all cars from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.

With an average of 34,019 miles at 6 years old, AUDI A3 owners tend to use this car less than the typical driver.

2020 AUDI A3 Fuel Costs

The modest 999cc petrol engine keeps fuel costs low, which is a real advantage for a premium. Expect around 50 mpg in mixed driving, which works out to roughly £955 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2020 AUDI A3?

Total estimated annual running cost is £1,405 (£117/month), broken down as £955 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

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 2020 AUDI A3

At 6 years old, the AUDI A3 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2021 model has the highest pass rate at 94%. With 10,059 MOT tests in our data, there's strong statistical confidence in these figures.

Common Issues to Watch For

Based on the 2020 AUDI A3's fuel type, age, and engine size, these are the most likely problem areas to check.

Coil Pack Failure

Medium risk

Smaller petrol engines are prone to ignition coil failures, causing misfires and rough running. Replacement is £50-£150 per coil.

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 2020 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(2020)	93%	£955	£195	Grp 1-8	£1405
FORD FIESTA(2018)	90%	£955	£190	Grp 1-8	£1400-£5
VOLKSWAGEN GOLF(2019)	92%	£1137	£190	Grp 12-25	£1582+£177
VAUXHALL CORSA(2018)	85%	£1137	£190	Grp 8-20	£1732+£327
NISSAN QASHQAI(2018)	87%	£955	£190	Grp 5-15	£1550+£145

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.