Audi Q3 S Line 40 TDI Quattro S-A (2020)
Estimated running costs and MOT pass rates from 498 MOT tests in 2024.
Annual Cost
£1,852
£154/month
MOT Pass Rate
95%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 18-32
1968cc Diesel
Great Choice
95% pass rate, £1,852/year to run. 13 points above average.
Check a specific Audi Q3 S Line 40 TDI Quattro S-A
Enter a reg plate for full MOT history, mileage check, health score, running costs, and reliability data. Free, instant, no signup.
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 13 points above the average of 82% across all models in our data. It also outperforms the Audi brand average of 90%.
95% of MOT tests on Audi Q3 S Line 40 TDI Quattro S-As from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 498 tests across the UK, retests included. The average mileage recorded at those tests was 32,450 miles.
Got a Audi Q3 S Line 40 TDI Quattro S-A you're looking at?
Enter the reg plate to check its specific MOT history, mileage, and health score.
How Does It Compare?
Mileage Analysis
32,450
Average miles
29,600
Expected for age
The average 2020 Audi Q3 S Line 40 TDI Quattro S-A had 32,450 miles on the clock at its 2024 MOT, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
Looking at a specific Audi Q3 S Line 40 TDI Quattro S-A?
Enter its reg plate for a free check with full MOT history, mileage verification, and predicted costs.
Best Year to Buy?
Of the years with at least 100 tests, the 2021 model has the highest MOT pass rate at 96%, while the 2020 model has the lowest at 95%. 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 Q3 S Line 40 TDI Quattro S-A by Year
Similar Cars to Consider
Check a Specific Audi Q3 S Line 40 TDI Quattro S-A
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 2020 Audi Q3 S Line 40 TDI Quattro S-A
The 2020 Audi Q3 S Line 40 TDI Quattro S-A is a premium car. Our records list a 1968cc diesel engine, though engines vary between versions. 498 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It ranks in the top 20% of all 2020 models for MOT pass rate.
With an average of 32,450 miles recorded at its 2024 MOT tests, Audi Q3 S Line 40 TDI Quattro S-A owners drive about as much as the UK average.
2020 Audi Q3 S Line 40 TDI Quattro S-A 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 2020 Audi Q3 S Line 40 TDI Quattro S-A?
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 95% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2020 Audi Q3 S Line 40 TDI Quattro S-A
At 6 years old, the Audi Q3 S Line 40 TDI Quattro S-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.
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
Watch outExhaust 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 2020 Audi Q3 S Line 40 TDI Quattro S-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 Q3 S Line 40 TDI Quattro S-A(2020) | 95% | £1,397 | £200 | Grp 18-32 | £1,852 |
| Volkswagen Golf(2018) | 92% | £1,397 | £200 | Grp 18-32 | £1,852same |
| Ford Focus(2019) | 89% | £1,219 | £200 | Grp 12-25 | £1,824-£28 |
| Volkswagen Polo(2018) | 84% | £1,219 | £200 | Grp 12-25 | £1,824-£28 |
| Ford Kuga(2019) | 91% | £1,397 | £200 | Grp 18-32 | £1,852same |
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 2020 Audi Q3 S Line 40 TDI Quattro S-A
Is the 2020 Audi Q3 S Line 40 TDI Quattro S-A reliable?
Excellent reliability. Very few MOT failures. 95% of MOT tests on 2020 Audi Q3 S Line 40 TDI Quattro S-As ended in a pass, from 498 tests (DVSA MOT data for tests in 2024, retests included). That's 13 points above the average of 82% across all models in the same data.
How much does a 2020 Audi Q3 S Line 40 TDI Quattro S-A 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 2020 Audi Q3 S Line 40 TDI Quattro S-A?
95% of 498 MOT tests on the 2020 Audi Q3 S Line 40 TDI Quattro S-A ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 498th of 2,554 models first registered in 2020 (top 20%).
Which year Audi Q3 S Line 40 TDI Quattro S-A has the best MOT pass rate?
Of the years with at least 100 tests, the 2021 Audi Q3 S Line 40 TDI Quattro S-A has the highest MOT pass rate at 96% and the 2020 the lowest at 95%. Newer cars usually pass more often simply because they are younger and have done fewer miles.
What is the average mileage for a 2020 Audi Q3 S Line 40 TDI Quattro S-A?
The average mileage recorded at MOT tests on the 2020 Audi Q3 S Line 40 TDI Quattro S-A is 32,450 miles, which is in line with the expected 29,600 miles for a 4-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
Volkswagen Golf
2018 · 1968cc Diesel
Ford Focus
2019 · 1499cc Diesel
Volkswagen Polo
2018 · 1598cc Diesel
Related Guides
In-depth articles relevant to the Audi Q3 S Line 40 TDI Quattro S-A.
Petrol vs Diesel in 2026: Which Actually Costs Less to Own?
8 min read
Buying GuideCars That Lose Value Fastest: Models to Avoid for Depreciation
8 min read
Buying GuideIs an Extended Car Warranty Worth It? UK Guide for 2026
8 min read
Buying GuideFord Fiesta Common Problems (2026): What to Check Before Buying
13 min read
ReliabilityFord Puma Common Problems: 7 Issues That Could Cost £1,500+ (2026)
13 min read
Check a specific Audi Q3 S Line 40 TDI Quattro S-A
Enter the reg to see its MOT history, mileage check, and predicted costs.
Premium History Check
Buying a Audi Q3 S Line 40 TDI Quattro S-A? Our premium check covers:
- Stolen check (PNC)
- Outstanding finance
- Write-off history (Cat A/B/N/S)
- Previous owners count
With outstanding finance included