Audi Q3 (2021)
Estimated running costs and MOT pass rates from 210 MOT tests in 2024.
Annual Cost
£1,852
£154/month
MOT Pass Rate
92%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 18-32
1968cc Diesel
Great Choice
92% pass rate, £1,852/year to run. 10 points above average.
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Annual Running Costs
~48 mpg
Standard rate (from April 2017)
Low estimate due to excellent reliability
Estimates based on 7,400 miles/year (UK average), diesel at 199.33p 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 10 points above the average of 82% across all models in our data.
92% of MOT tests on Audi Q3s from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 210 tests across the UK, retests included. The average mileage recorded at those tests was 34,642 miles.
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How Does It Compare?
Mileage Analysis
34,642
Average miles
22,200
Expected for age
The average 2021 Audi Q3 had 34,642 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 94%, while the 2011 model has the lowest at 81%. The 2021 scores 92%. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
Audi Q3 by Year
Similar Cars to Consider
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About the 2021 Audi Q3
The 2021 Audi Q3 is a premium car. Our records list a 1968cc diesel engine, though engines vary between versions. 210 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. Among all models from 2021, the average MOT pass rate is 92%, and this model matches that benchmark.
With an average of 34,642 miles recorded at its 2024 MOT tests, Audi Q3 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 Q3 Fuel Costs
The 1968cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,397 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2021 Audi Q3?
Total estimated annual running cost is £1,852 (£154/month), broken down as £1,397 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Audi Q3 Reliability Trend
Newer Audi Q3s pass their MOT more often than older ones, by 7 percentage points on average, which is mostly down to age and wear.
Buying a Used 2021 Audi Q3
At 5 years old, the Audi Q3 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2020 model has the highest pass rate at 94%.
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.
DPF (Diesel Particulate Filter)
Watch outShort journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.
Turbo Wear
Medium riskDiesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.
AdBlue System
Medium riskPost-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.
EGR Valve
Low riskExhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.
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 Q3 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 Q3(2021) | 92% | £1,397 | £200 | Grp 18-32 | £1,852 |
| Ford Focus(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£28 |
| Ford Kuga(2019) | 91% | £1,397 | £200 | Grp 18-32 | £1,852same |
| Volkswagen Polo(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£28 |
| Kia Sportage(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£28 |
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 Q3
Is the 2021 Audi Q3 reliable?
Excellent reliability. Very few MOT failures. 92% of MOT tests on 2021 Audi Q3s ended in a pass, from 210 tests (DVSA MOT data for tests in 2024, retests included). That's 10 points above the average of 82% across all models in the same data.
How much does a 2021 Audi Q3 cost to run?
Our estimate is £1,852 a year (£154 a month): £1,397 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 Q3?
92% of 210 MOT tests on the 2021 Audi Q3 ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2005th of 3,336 models first registered in 2021 (bottom half).
Which year Audi Q3 has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 Audi Q3 has the highest MOT pass rate at 94% and the 2011 the lowest at 81%. 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 Q3?
The average mileage recorded at MOT tests on the 2021 Audi Q3 is 34,642 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.
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
Ford Focus
2019 · 1499cc Diesel
Ford Kuga
2019 · 1997cc Diesel
Volkswagen Polo
2019 · 1598cc Diesel
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