Audi A4 S Line 40 TFSI MHEV S A (2020)
2020 Audi A4 S Line 40 TFSI MHEV S A
CarHunch analysed 116 real MOT records for the 2020 Audi A4 S Line 40 TFSI MHEV S A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2020 A4 S Line 40 TFSI hybrid is significantly more reliable than the typical UK car, with a first-time pass rate of 91.7% against the national average of 80%—and dangerous defects are relatively uncommon, affecting only 12.1% of the cohort. You're looking at a genuinely dependable car that passes its MOT cleanly the vast majority of the time.
At 35,010 miles on average, these cars have seen moderate use for their age, which explains why they rack up an average of 2.6 advisories per test—mostly minor wear items rather than serious faults. Average failures sit at just 0.31 per vehicle, so if you're buying one, have a pre-purchase inspection done to confirm service history, but you're not inheriting a car with widespread mechanical problems.
What to check before buying a 2020 Audi A4 S Line 40 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 A4 S Line 40 TFSI MHEV S A
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Mileage Distribution
Most 2020 Audi A4 S Line 40 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 A4 S Line 40 TFSI MHEV S A vehicles fall between 25,234 and 42,022 miles.
2020 Audi A4 S Line 40 TFSI MHEV S A — Still on the Road
Strong survival — 112 vehicles still getting MOTs in 2025, 100% 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 A4 S Line 40 TFSI MHEV S A?
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