Audi A3 S Line 30 TFSI MHEV S A (2020)
2020 Audi A3 S Line 30 TFSI MHEV S A
CarHunch analysed 126 real MOT records for the 2020 Audi A3 S Line 30 TFSI MHEV S A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2020 Audi A3 is a notably reliable proposition, with a 91.6% first-time pass rate that sits well above the UK average of 80%—only 1 in 8 cars have ever recorded a dangerous defect, which is reassuring for a buyer. The petrol engine variant (which makes up virtually all of this cohort) maintains that strong 91.4% pass rate with no meaningful reliability divide.
At 34,080 miles average for a four-year-old car, these examples are running slightly lighter than expected, suggesting either careful ownership or limited annual mileage—either way, a positive sign. The low failure count of 0.29 per vehicle combined with a moderate advisory tally of 2.5 items indicates minor wear items crop up but nothing structural or costly; when shopping, prioritise a full service history and ask specifically about any previous advisories on brakes or suspension to stay ahead of the curve.
What to check before buying a 2020 Audi A3 S Line 30 TFSI MHEV S A
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Audi A3 S Line 30 TFSI MHEV S A
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (98%) | 123 | 91.4% | 0.3 |
| Hybrid Electric (Clean) (2%) | 2 | 100% | 0 |
| Other (1%) | 1 | 100% | 0 |
Mileage Distribution
Most 2020 Audi A3 S Line 30 TFSI MHEV S A vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2020 Audi A3 S Line 30 TFSI MHEV S A vehicles fall between 25,004 and 42,881 miles.
2020 Audi A3 S Line 30 TFSI MHEV S A — Still on the Road
Strong survival — 113 vehicles still getting MOTs in 2025, 97% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2023–2025.
MOT History Averages
Found a specific Audi A3 S Line 30 TFSI MHEV S A?
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