CarCostCheck

AUDI Q7 S LINE 50 TDI MHEV QUAT A (2021)

Running costs, common problems, and reliability data based on 924 real MOT tests in 2024.

MOT Pass Rate

95%

Total Tests (2024)

924

Avg Mileage

33,757 mi

Est. Annual Cost

£1,690

Is the 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A reliable?

Excellent reliability. Very few MOT failures. That's 13 points above the national average of 82%. It also outperforms the AUDI brand average of 90%.

At 3 years old, 95% of AUDI Q7 S LINE 50 TDI MHEV QUAT As from 2021 passed their MOT first time in 2024. That's based on 924 tests across the UK. The average mileage at this age is 33,757 miles.

How does the 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A compare?

Rank among all 2021 cars827th out of 3,373(top 25%)
Rank among all AUDI models207th out of 1,079(top 19%)
vs national average+13% (82% avg)
vs 2021 cars average+3% (92% avg)
vs AUDI average+5% (90% avg)

Mileage Analysis

The average 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A has 33,757 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.

How much does a 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A cost to run?

Fuel (Diesel, 2967cc)
£1,245
🏛️Road Tax
£190
🔧MOT Test
£55
🛠️Predicted Repairs
£200
Total per year£1,690
Per month£141/mo

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.

AUDI Q7 S LINE 50 TDI MHEV QUAT A by Year

YearPass RateTestsAvg Mileage
202297%3432,031 mi
202195%92433,757 mi
202094%1,67540,891 mi
201994%30446,862 mi

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About the 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A

The 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A is a premium performance with a 2967cc diesel engine. 924 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. It ranks in the top 25% of all 2021 cars for reliability.

With an average of 33,757 miles at 3 years old, AUDI Q7 S LINE 50 TDI MHEV QUAT A owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.

2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A Fuel Costs

The 2967cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year).

What does it cost to own a 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A?

Total estimated annual running cost is £1,690 141/month), broken down as £1245 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 95% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

AUDI Q7 S LINE 50 TDI MHEV QUAT A Reliability Trend

The AUDI Q7 S LINE 50 TDI MHEV QUAT A has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.

Buying a Used 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A

At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet.

Alternatives to the 2021 AUDI Q7 S LINE 50 TDI MHEV QUAT A

The AUDI Q7 S LINE 50 TDI MHEV QUAT A is actually the most reliable option among similar diesel premium performances from this era. Here are comparable diesel cars with similar engines: