Audi Q7 S Line 55 TFSI E Quattro A (2021)
Estimated running costs and MOT pass rates from 179 MOT tests in 2024.
Annual Cost
£2,413
£201/month
MOT Pass Rate
94%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 30-42
2995cc Hybrid
Great Choice
94% pass rate, £2,413/year to run. 12 points above average.
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Annual Running Costs
~30 mpg (petrol-engine estimate; hybrids usually use less)
Standard rate (from April 2017)
Low estimate due to excellent reliability
Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Excellent reliability. Very few MOT failures. That's 12 points above the average of 82% across all models in our data. It also outperforms the Audi brand average of 90%.
94% of MOT tests on Audi Q7 S Line 55 TFSI E Quattro As from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 179 tests across the UK, retests included. The average mileage recorded at those tests was 39,191 miles.
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How Does It Compare?
Mileage Analysis
39,191
Average miles
22,200
Expected for age
The average 2021 Audi Q7 S Line 55 TFSI E Quattro A had 39,191 miles on the clock at its 2024 MOT, 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.
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Best Year to Buy?
Of the years with at least 100 tests, the 2020 model has the highest MOT pass rate at 96%, while the 2021 model has the lowest at 94%. Consider a different year if reliability is a priority. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
Audi Q7 S Line 55 TFSI E Quattro A by Year
Similar Cars to Consider
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About the 2021 Audi Q7 S Line 55 TFSI E Quattro A
The 2021 Audi Q7 S Line 55 TFSI E Quattro A is a premium performance car. Our records list a 2995cc hybrid engine, though engines vary between versions. 179 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. Among all models from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 39,191 miles recorded at its 2024 MOT tests, Audi Q7 S Line 55 TFSI E Quattro 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 55 TFSI E Quattro A Fuel Costs
The 2995cc hybrid engine is on the larger side, so fuel won't be this car's strong point. Our estimate uses around 30 mpg, the figure for a petrol engine of this size, which works out to roughly £1,958 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). As a hybrid it should use less than that, and real-world fuel costs depend a lot on how much electric-only driving you do.
What does it cost to own a 2021 Audi Q7 S Line 55 TFSI E Quattro A?
Total estimated annual running cost is £2,413 (£201/month), broken down as £1,958 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 Audi Q7 S Line 55 TFSI E Quattro A
At 5 years old, the Audi Q7 S Line 55 TFSI E Quattro A offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
Hybrid Battery Health
Medium riskAfter 5 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.
Inverter and Power Electronics
Low riskThe inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.
Regenerative Braking
Medium riskBrake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.
Service History
Low riskAlways 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 2021 Audi Q7 S Line 55 TFSI E Quattro A stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Audi Q7 S Line 55 TFSI E Quattro A(2021) | 94% | £1,958 | £200 | Grp 30-42 | £2,413 |
| Toyota RAV4(2020) | 95% | £1,958 | £200 | Grp 25-38 | £2,413same |
| BMW X5 XDRIVE45E M Sport Auto(2021) | 88% | £1,958 | £200 | Grp 30-42 | £2,563+£150 |
| BMW M340I Xdrive MHEV Auto(2021) | 93% | £1,958 | £200 | Grp 30-42 | £2,413same |
| Lexus RX(2019) | 96% | £1,958 | £200 | Grp 35-50 | £2,413same |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2021 Audi Q7 S Line 55 TFSI E Quattro A
Is the 2021 Audi Q7 S Line 55 TFSI E Quattro A reliable?
Excellent reliability. Very few MOT failures. 94% of MOT tests on 2021 Audi Q7 S Line 55 TFSI E Quattro As ended in a pass, from 179 tests (DVSA MOT data for tests in 2024, retests included). That's 12 points above the average of 82% across all models in the same data.
How much does a 2021 Audi Q7 S Line 55 TFSI E Quattro A cost to run?
Our estimate is £2,413 a year (£201 a month): £1,958 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2021 Audi Q7 S Line 55 TFSI E Quattro A?
94% of 179 MOT tests on the 2021 Audi Q7 S Line 55 TFSI E Quattro A ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 1292nd of 3,336 models first registered in 2021 (top half).
Which year Audi Q7 S Line 55 TFSI E Quattro A has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 Audi Q7 S Line 55 TFSI E Quattro A has the highest MOT pass rate at 96% and the 2021 the lowest at 94%. Newer cars usually pass more often simply because they are younger and have done fewer miles.
What is the average mileage for a 2021 Audi Q7 S Line 55 TFSI E Quattro A?
The average mileage recorded at MOT tests on the 2021 Audi Q7 S Line 55 TFSI E Quattro A is 39,191 miles, 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.
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