Audi A4 S Ln Blk Ed 40tdi MHEV Q SA (2021)
2021 Audi A4 S Ln Blk Ed 40tdi MHEV Q SA
CarHunch analysed 149 real MOT records for the 2021 Audi A4 S Ln Blk Ed 40tdi MHEV Q SA. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2021 A4 S line diesel is outperforming the UK average with an 85.6% first-time pass rate against the national 80%, suggesting these cars are holding up well mechanically. However, 16.8% have recorded a dangerous defect at some point, which is worth noting if you're buying used—get a pre-purchase inspection focused on brake and suspension components.
At 38,900 miles median (42,500 average), these vehicles are running relatively light for their age, which explains the strong pass rate but also means you're not yet seeing long-term wear patterns. Most cars rack up only 0.33 failures per test but average 1.6 advisories each, pointing to minor wear rather than structural problems—typical for a well-built premium diesel that benefits from owner maintenance. When shopping, ask for full service history and a recent MOT printout to check what advisories have been flagged.
What to check before buying a 2021 Audi A4 S Ln Blk Ed 40tdi MHEV Q SA
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 Ln Blk Ed 40tdi MHEV Q SA
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Mileage Distribution
Most 2021 Audi A4 S Ln Blk Ed 40tdi MHEV Q SA 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 2021 Audi A4 S Ln Blk Ed 40tdi MHEV Q SA vehicles fall between 28,781 and 53,344 miles.
MOT History Averages
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