Audi Q3 S Line Ed 1 40 TDI Quat Sa (2021)

Estimated running costs and MOT pass rates from 76 MOT tests in 2024.

Annual Cost

£1,852

£154/month

MOT Pass Rate

99%

Excellent

Road Tax

£200

Standard rate/year

Est. Insurance

Grp 18-32

1968cc Diesel

Great Choice

99% pass rate, £1,852/year to run. 17 points above average.

Buying this car? Check for finance, write-offs & theft

£4.99

Check a specific Audi Q3 S Line Ed 1 40 TDI Quat Sa

Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.

Diesel1968cc5 years old76 tests35k miles avg

Annual Running Costs

Fuel (Diesel, 1968cc)

~48 mpg

£1,397

Road Tax

Standard rate (from April 2017)

£200

MOT Test

£55

Predicted Repairs

Low estimate due to excellent reliability

£200

Total per year£1,852

Per month£154/mo

Per week£36/wk

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

99% MOT pass rate(Excellent)

0%All-model avg: 82%100%

Excellent reliability. Very few MOT failures. That's 17 points above the average of 82% across all models in our data. It also outperforms the Audi brand average of 90%.

99% of MOT tests on Audi Q3 S Line Ed 1 40 TDI Quat Sas from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 76 tests across the UK, retests included. The average mileage recorded at those tests was 35,026 miles.

Got a Audi Q3 S Line Ed 1 40 TDI Quat Sa you're looking at?

Enter the reg plate to check its specific MOT history, mileage, and health score.

How Does It Compare?

Rank among 2021 models141st of 3,336(top 5%)

Rank among Audi models49th of 1,066(top 5%)

vs average of all models+17%(82% avg)

vs 2021 models average+7%(92% avg)

vs Audi average+9%(90% avg)

Mileage Analysis

35,026

Average miles

22,200

Expected for age

The average 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa had 35,026 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.

Looking at a specific Audi Q3 S Line Ed 1 40 TDI Quat Sa?

Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.

Audi Q3 S Line Ed 1 40 TDI Quat Sa by Year

Year	Pass Rate	Tests	Avg Mileage
2021	99%	76	35,026 mi
2020	95%	203	34,259 mi

Similar Cars to Consider

Ford Focus

2019 · 1499cc Diesel

£1,824/year

89%

-10%

Ford Kuga

2019 · 1997cc Diesel

£1,852/year

91%

-8%

Volkswagen Polo

2019 · 1598cc Diesel

£1,824/year

89%

-10%

Kia Sportage

2019 · 1598cc Diesel

£1,824/year

89%

-10%

Check a Specific Audi Q3 S Line Ed 1 40 TDI Quat Sa

Enter a reg plate to get the full MOT history, health score, and mileage verification.

Upgrade to Premium (£4.99) for stolen, finance, and write-off checks.

About the 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa

The 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa is a premium car. Our records list a 1968cc diesel engine, though engines vary between versions. 76 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It ranks in the top 5% of all 2021 models for MOT pass rate.

With an average of 35,026 miles recorded at its 2024 MOT tests, Audi Q3 S Line Ed 1 40 TDI Quat Sa 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 S Line Ed 1 40 TDI Quat Sa 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 S Line Ed 1 40 TDI Quat Sa?

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 99% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

Buying a Used 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa

At 5 years old, the Audi Q3 S Line Ed 1 40 TDI Quat Sa offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 76 tests in our data, these figures should be treated as indicative rather than definitive.

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 out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Medium risk

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Low risk

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Service History

Low risk

Always 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 S Line Ed 1 40 TDI Quat Sa 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 S Line Ed 1 40 TDI Quat Sa(2021)	99%	£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 S Line Ed 1 40 TDI Quat Sa

Is the 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa reliable?

Excellent reliability. Very few MOT failures. 99% of MOT tests on 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sas ended in a pass, from 76 tests (DVSA MOT data for tests in 2024, retests included). That's 17 points above the average of 82% across all models in the same data.

How much does a 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa 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 S Line Ed 1 40 TDI Quat Sa?

99% of 76 MOT tests on the 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 141st of 3,336 models first registered in 2021 (top 5%).

What is the average mileage for a 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa?

The average mileage recorded at MOT tests on the 2021 Audi Q3 S Line Ed 1 40 TDI Quat Sa is 35,026 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.