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Audi A3 S Line 40 TFSI E S-a Reliability, MOT Pass Rate & Common Faults

Free Audi A3 S Line 40 TFSI E S-a car check

Is the Audi A3 S Line 40 TFSI E S-a reliable? We analysed 11,746 real MOT tests across 5,134 vehicles to find out.

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Data last updated: · Based on 11,746 real MOT tests
MOT Pass Rate
88.2%
Typical Mileage
35,906mi
Annual Mileage
8,140mi/yr
Est. Lifespan
yrs

The Audi A3 S Line 40 TFSI E S-a is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Audi A3 S Line 40 TFSI E S-a.

Audi A3 S Line 40 TFSI E S-a Number Plates

Number plates registered to a Audi A3 S Line 40 TFSI E S-a. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Audi A3 S Line 40 TFSI E S-a MOT Pass Rate by Year

How likely is a Audi A3 S Line 40 TFSI E S-a to pass its MOT? Here's the pass rate for each registration year, newest first.

87.6%
2023
88.4%
2022
88.2%
2021
88.4%
2020

Audi A3 S Line 40 TFSI E S-a Common Faults & Problems

These are the most common serious faults found on Audi A3 S Line 40 TFSI E S-a models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth below requirements of 1.6mm 181
Tyre has ply or cords exposed 95
Tyre has ply or cords exposed 67
Tyre has ply or cords exposed 62
Tyre has a bulge, caused by separation or partial failure of its structure 43

Audi A3 S Line 40 TFSI E S-a Mileage — What's Normal?

How many miles does a typical Audi A3 S Line 40 TFSI E S-a owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.

Low usage
5,342 mi/yr
Typical
8,140 mi/yr
Average
9,806 mi/yr
Heavy usage
12,075 mi/yr

Audi A3 S Line 40 TFSI E S-a MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Audi A3 S Line 40 TFSI E S-a year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2023 517 87.6% 24,334 37,387 53,583
2022 1,672 88.4% 24,438 36,232 50,397
2021 8,586 88.2% 25,172 35,747 51,079
2020 580 88.4% 20,713 30,372 43,345

How Long Does a Audi A3 S Line 40 TFSI E S-a Last?

Based on 5,134 Audi A3 S Line 40 TFSI E S-a vehicles on UK roads.

Average
3.2 years
Median
3.0 years

Audi A3 S Line 40 TFSI E S-a Mileage Distribution

Total mileage recorded across all Audi A3 S Line 40 TFSI E S-a MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
35,906 mi
75th Percentile
50,939 mi
95th Percentile
81,839 mi
Max Recorded
247,772 mi

Best Year to Buy a Used Audi A3 S Line 40 TFSI E S-a

Based on MOT pass rates across all registration years with sufficient test data.

Best year
2020

88.4% MOT pass rate from 580 tests

Year to avoid
2023

87.6% MOT pass rate from 517 tests

The best year to buy a used Audi A3 S Line 40 TFSI E S-a is 2020, which has the highest MOT pass rate at 88.4% across 580 tests. The 2023 model year has the lowest pass rate at 87.6% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.

How Does the Audi A3 S Line 40 TFSI E S-a Compare?

MOT pass rates compared to similar models. Click any model for the full breakdown.

Model Pass Rate Tests Typical Mileage Lifespan
Audi A3 S Line 40 TFSI E S-a THIS CAR 88.2% 11,746 35,906 mi — yrs
Audi A3 78% 7,415,025 78,776 mi 29 yrs
Audi A4 76.1% 7,096,957 96,834 mi 31 yrs
Audi A6 78.4% 2,724,792 98,890 mi 31 yrs
BMW F 650 Gs 91.6% 7,836 16,588 mi 22 yrs

Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi A3 S Line 40 TFSI E S-a outperforms both on MOT reliability.

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Should you buy a used Audi A3 S Line 40 TFSI E S-a?

The Audi A3 S Line 40 TFSI E S-a has an overall MOT pass rate of 88.2% across 11,746 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.

On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Audi A3 S Line 40 TFSI E S-a with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.

A typical Audi A3 S Line 40 TFSI E S-a owner drives around 8,140 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.

Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.

Audi A3 S Line 40 TFSI E S-a — Frequently Asked Questions

Is the Audi A3 S Line 40 TFSI E S-a reliable?
Based on 11,746 MOT tests, the Audi A3 S Line 40 TFSI E S-a has a 88.2% pass rate — above the UK average, suggesting good reliability.
What are the common problems on a Audi A3 S Line 40 TFSI E S-a?
The most common failure point is general wear and tear.
How many miles does a Audi A3 S Line 40 TFSI E S-a do per year?
The typical Audi A3 S Line 40 TFSI E S-a does around 8,140 miles per year. Anything significantly above or below this is worth investigating.
How long does a Audi A3 S Line 40 TFSI E S-a last?
Lifespan data is not yet available for this model.
Should I get a vehicle check before buying a Audi A3 S Line 40 TFSI E S-a?
Yes. An MOT pass rate tells you about the model in general, but a vehicle history check reveals the specific car's finance, stolen, write-off and mileage history — things the seller may not disclose.
What is the best year to buy a Audi A3 S Line 40 TFSI E S-a?
Based on MOT pass rates, the best year to buy a used Audi A3 S Line 40 TFSI E S-a is 2020 with a 88.4% pass rate across 580 tests.