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Audi A6 Sport 40 TDI MHEV QUAT S-a Reliability, MOT Pass Rate & Common Faults

Free Audi A6 Sport 40 TDI MHEV QUAT S-a car check

Is the Audi A6 Sport 40 TDI MHEV QUAT S-a reliable? We analysed 408 real MOT tests across 223 vehicles to find out.

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Data last updated: · Based on 408 real MOT tests
MOT Pass Rate
93.4%
Typical Mileage
28,996mi
Annual Mileage
16,786mi/yr
Est. Lifespan
yrs

The Audi A6 Sport 40 TDI MHEV QUAT 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 A6 Sport 40 TDI MHEV QUAT S-a.

Audi A6 Sport 40 TDI MHEV QUAT S-a Number Plates

Number plates registered to a Audi A6 Sport 40 TDI MHEV QUAT S-a. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Audi A6 Sport 40 TDI MHEV QUAT S-a MOT Pass Rate by Year

How likely is a Audi A6 Sport 40 TDI MHEV QUAT S-a to pass its MOT? Here's the pass rate for each registration year, newest first.

93.7%
2024
90.6%
2023
94.3%
2022

Audi A6 Sport 40 TDI MHEV QUAT S-a Common Faults & Problems

These are the most common serious faults found on Audi A6 Sport 40 TDI MHEV QUAT S-a models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth below requirements of 1.6mm 5
Tyre tread depth below requirements of 1.6mm 225/55/18 2
Brake pad(s) less than 1.5 mm thick 1
Brake pad(s) less than 1.5 mm thick 1

Audi A6 Sport 40 TDI MHEV QUAT S-a Mileage — What's Normal?

How many miles does a typical Audi A6 Sport 40 TDI MHEV QUAT 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
9,909 mi/yr
Typical
16,786 mi/yr
Average
19,128 mi/yr
Heavy usage
26,135 mi/yr

Audi A6 Sport 40 TDI MHEV QUAT S-a MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Audi A6 Sport 40 TDI MHEV QUAT S-a year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2024 111 93.7% 5,230 14,659 29,252
2023 53 90.6% 13,270 28,345 39,051
2022 227 94.3% 24,294 32,391 44,907

How Long Does a Audi A6 Sport 40 TDI MHEV QUAT S-a Last?

Based on 223 Audi A6 Sport 40 TDI MHEV QUAT S-a vehicles on UK roads.

Average
2.2 years
Median
2.0 years

Audi A6 Sport 40 TDI MHEV QUAT S-a Mileage Distribution

Total mileage recorded across all Audi A6 Sport 40 TDI MHEV QUAT S-a MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
28,996 mi
75th Percentile
41,211 mi
95th Percentile
66,076 mi
Max Recorded
182,742 mi

Best Year to Buy a Used Audi A6 Sport 40 TDI MHEV QUAT S-a

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

Best year
2022

94.3% MOT pass rate from 227 tests

Year to avoid
2023

90.6% MOT pass rate from 53 tests

The best year to buy a used Audi A6 Sport 40 TDI MHEV QUAT S-a is 2022, which has the highest MOT pass rate at 94.3% across 227 tests. The 2023 model year has the lowest pass rate at 90.6% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.

How Does the Audi A6 Sport 40 TDI MHEV QUAT 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 A6 Sport 40 TDI MHEV QUAT S-a THIS CAR 93.4% 408 28,996 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
Mercedes-benz Glc 250 D 4M AMG Line Prem + A 91.6% 346 56,040 mi — yrs

Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi A6 Sport 40 TDI MHEV QUAT S-a outperforms both on MOT reliability.

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Should you buy a used Audi A6 Sport 40 TDI MHEV QUAT S-a?

The Audi A6 Sport 40 TDI MHEV QUAT S-a has an overall MOT pass rate of 93.4% across 408 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 A6 Sport 40 TDI MHEV QUAT 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 A6 Sport 40 TDI MHEV QUAT S-a owner drives around 16,786 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 A6 Sport 40 TDI MHEV QUAT S-a — Frequently Asked Questions

Is the Audi A6 Sport 40 TDI MHEV QUAT S-a reliable?
Based on 408 MOT tests, the Audi A6 Sport 40 TDI MHEV QUAT S-a has a 93.4% pass rate — above the UK average, suggesting good reliability.
What are the common problems on a Audi A6 Sport 40 TDI MHEV QUAT S-a?
The most common failure point is general wear and tear.
How many miles does a Audi A6 Sport 40 TDI MHEV QUAT S-a do per year?
The typical Audi A6 Sport 40 TDI MHEV QUAT S-a does around 16,786 miles per year. Anything significantly above or below this is worth investigating.
How long does a Audi A6 Sport 40 TDI MHEV QUAT S-a last?
Lifespan data is not yet available for this model.
Should I get a vehicle check before buying a Audi A6 Sport 40 TDI MHEV QUAT 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 A6 Sport 40 TDI MHEV QUAT S-a?
Based on MOT pass rates, the best year to buy a used Audi A6 Sport 40 TDI MHEV QUAT S-a is 2022 with a 94.3% pass rate across 227 tests.