Audi RS 6 Crbn BLK TFSI MHEV Quat A (2021)
Estimated running costs and MOT pass rates from 507 MOT tests in 2024.
Annual Cost
£2,563
£214/month
MOT Pass Rate
89%
Good
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 35-50
3996cc Petrol
Solid Option
89% pass rate, £2,563/year to run. 7 points above average.
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Annual Running Costs
~30 mpg
Standard rate (from April 2017)
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
Good reliability. Occasional issues but generally solid. That's 7 points above the average of 82% across all models in our data.
89% of MOT tests on Audi RS 6 Crbn BLK TFSI MHEV Quat As from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 507 tests across the UK, retests included. The average mileage recorded at those tests was 24,668 miles.
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How Does It Compare?
Mileage Analysis
24,668
Average miles
22,200
Expected for age
The average 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A had 24,668 miles on the clock at its 2024 MOT, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
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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 97%, while the 2021 model has the lowest at 89%. 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 RS 6 Crbn BLK TFSI MHEV Quat A by Year
Similar Cars to Consider
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About the 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A
The 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A is a premium performance car. Our records list a 3996cc petrol engine, though engines vary between versions. 507 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It sits in the bottom 21% of 2021 models for MOT pass rate.
With an average of 24,668 miles recorded at its 2024 MOT tests, Audi RS 6 Crbn BLK TFSI MHEV Quat A owners drive about as much as the UK average.
2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A Fuel Costs
The 3996cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, 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).
What does it cost to own a 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A?
Total estimated annual running cost is £2,563 (£214/month), broken down as £1,958 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A
At 5 years old, the Audi RS 6 Crbn BLK TFSI MHEV Quat 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.
Oil Consumption
Low riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
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 RS 6 Crbn BLK TFSI MHEV Quat 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 RS 6 Crbn BLK TFSI MHEV Quat A(2021) | 89% | £1,958 | £200 | Grp 35-50 | £2,563 |
| Mercedes C(2019) | 91% | £1,958 | £200 | Grp 35-50 | £2,413-£150 |
| Porsche Cayenne(2019) | 95% | £1,958 | £200 | Grp 35-50 | £2,413-£150 |
| Porsche 911(2019) | 97% | £1,958 | £200 | Grp 35-50 | £2,413-£150 |
| Audi A6(2020) | 94% | £1,958 | £200 | Grp 35-50 | £2,413-£150 |
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 RS 6 Crbn BLK TFSI MHEV Quat A
Is the 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A reliable?
Good reliability. Occasional issues but generally solid. 89% of MOT tests on 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat As ended in a pass, from 507 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points above the average of 82% across all models in the same data.
How much does a 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A cost to run?
Our estimate is £2,563 a year (£214 a month): £1,958 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A?
89% of 507 MOT tests on the 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2660th of 3,336 models first registered in 2021 (bottom 21%).
Which year Audi RS 6 Crbn BLK TFSI MHEV Quat A has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 Audi RS 6 Crbn BLK TFSI MHEV Quat A has the highest MOT pass rate at 97% and the 2021 the lowest at 89%. 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 RS 6 Crbn BLK TFSI MHEV Quat A?
The average mileage recorded at MOT tests on the 2021 Audi RS 6 Crbn BLK TFSI MHEV Quat A is 24,668 miles, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
Related Audi Models
Explore other Audi cars or similar models in the same category.
Audi A3
2015 · 1598cc Diesel
Audi A1
2016 · 1395cc Petrol
Audi A4
2017 · 1968cc Diesel
Mercedes C
2019 · 3982cc Petrol
Porsche Cayenne
2019 · 3996cc Petrol
Porsche 911
2019 · 3996cc Petrol
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