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Audi A8 S Line Blk ED 50 TDI QUAT A Reliability, MOT Pass Rate & Common Faults

Free Audi A8 S Line Blk ED 50 TDI QUAT A car check

Is the Audi A8 S Line Blk ED 50 TDI QUAT A reliable? We analysed 789 real MOT tests across 239 vehicles to find out.

Got a specific Audi A8 S Line Blk ED 50 TDI QUAT A? Enter the reg for a free check:

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Data last updated: · Based on 789 real MOT tests
MOT Pass Rate
91.4%
Typical Mileage
43,046mi
Annual Mileage
10,003mi/yr
Est. Lifespan
yrs

The Audi A8 S Line Blk ED 50 TDI QUAT A is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Audi A8 S Line Blk ED 50 TDI QUAT A.

Audi A8 S Line Blk ED 50 TDI QUAT A Number Plates

Number plates registered to a Audi A8 S Line Blk ED 50 TDI QUAT A. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Audi A8 S Line Blk ED 50 TDI QUAT A MOT Pass Rate by Year

How likely is a Audi A8 S Line Blk ED 50 TDI QUAT A to pass its MOT? Here's the pass rate for each registration year, newest first.

93.9%
2021
90.6%
2020
90.5%
2019

Audi A8 S Line Blk ED 50 TDI QUAT A Common Faults & Problems

These are the most common serious faults found on Audi A8 S Line Blk ED 50 TDI QUAT A models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth below requirements of 1.6mm 16
Tyre has ply or cords exposed 6
Tyre tread pattern not visible over the whole tread area when minimum depth required is 1.0mm 3
Tyre has ply or cords exposed 3

Audi A8 S Line Blk ED 50 TDI QUAT A Mileage — What's Normal?

How many miles does a typical Audi A8 S Line Blk ED 50 TDI QUAT A owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.

Low usage
6,286 mi/yr
Typical
10,003 mi/yr
Average
12,888 mi/yr
Heavy usage
15,223 mi/yr

Audi A8 S Line Blk ED 50 TDI QUAT A MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Audi A8 S Line Blk ED 50 TDI QUAT A year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2021 114 93.9% 22,028 38,330 51,337
2020 577 90.6% 30,254 43,536 59,608
2019 63 90.5% 32,238 45,693 56,361

How Long Does a Audi A8 S Line Blk ED 50 TDI QUAT A Last?

Based on 239 Audi A8 S Line Blk ED 50 TDI QUAT A vehicles on UK roads.

Average
4.5 years
Median
4.0 years

Audi A8 S Line Blk ED 50 TDI QUAT A Mileage Distribution

Total mileage recorded across all Audi A8 S Line Blk ED 50 TDI QUAT A MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
43,046 mi
75th Percentile
59,074 mi
95th Percentile
93,393 mi
Max Recorded
420,297 mi

Best Year to Buy a Used Audi A8 S Line Blk ED 50 TDI QUAT A

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

Best year
2021

93.9% MOT pass rate from 114 tests

Year to avoid
2019

90.5% MOT pass rate from 63 tests

The best year to buy a used Audi A8 S Line Blk ED 50 TDI QUAT A is 2021, which has the highest MOT pass rate at 93.9% across 114 tests. The 2019 model year has the lowest pass rate at 90.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.

How Does the Audi A8 S Line Blk ED 50 TDI QUAT A Compare?

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

Model Pass Rate Tests Typical Mileage Lifespan
Audi A8 S Line Blk ED 50 TDI QUAT A THIS CAR 91.4% 789 43,046 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
Honda Cb 1300 SA-7 93.5% 1,200 14,914 mi 19 yrs

Compared to the Audi A3 (78.0% pass rate) and the Audi A4 (76.1% pass rate), the Audi A8 S Line Blk ED 50 TDI QUAT A outperforms both on MOT reliability.

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Should you buy a used Audi A8 S Line Blk ED 50 TDI QUAT A?

The Audi A8 S Line Blk ED 50 TDI QUAT A has an overall MOT pass rate of 91.4% across 789 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 A8 S Line Blk ED 50 TDI QUAT 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 A8 S Line Blk ED 50 TDI QUAT A owner drives around 10,003 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 A8 S Line Blk ED 50 TDI QUAT A — Frequently Asked Questions

Is the Audi A8 S Line Blk ED 50 TDI QUAT A reliable?
Based on 789 MOT tests, the Audi A8 S Line Blk ED 50 TDI QUAT A has a 91.4% pass rate — above the UK average, suggesting good reliability.
What are the common problems on a Audi A8 S Line Blk ED 50 TDI QUAT A?
The most common failure point is general wear and tear.
How many miles does a Audi A8 S Line Blk ED 50 TDI QUAT A do per year?
The typical Audi A8 S Line Blk ED 50 TDI QUAT A does around 10,003 miles per year. Anything significantly above or below this is worth investigating.
How long does a Audi A8 S Line Blk ED 50 TDI QUAT A last?
Lifespan data is not yet available for this model.
Should I get a vehicle check before buying a Audi A8 S Line Blk ED 50 TDI QUAT 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 A8 S Line Blk ED 50 TDI QUAT A?
Based on MOT pass rates, the best year to buy a used Audi A8 S Line Blk ED 50 TDI QUAT A is 2021 with a 93.9% pass rate across 114 tests.