Audi Q5 S Line TDI Quattro S A (2018)
2018 Audi Q5 S Line TDI Quattro S A
CarHunch analysed 686 real MOT records for the 2018 Audi Q5 S Line TDI Quattro S A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2018 Q5 S Line TDI Quattro achieves an 83.6% first-time pass rate, which sits comfortably above the UK average of 80%, and notably zero vehicles in this cohort have ever recorded a dangerous defect—a genuinely reassuring safety picture. The diesel engine delivers consistent reliability, with an extremely low average of just 0.11 failures per vehicle and virtually no advisory issues flagged by testers.
At 64,611 miles median mileage, these cars are running well within expected wear for their age, which helps explain the strong MOT performance. If you're viewing one of these, the data suggests you're looking at a fundamentally sound car; focus your inspection on service history and any accident damage, rather than worrying about hidden mechanical gremlins.
What to check before buying a 2018 Audi Q5 S Line TDI Quattro 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 Q5 S Line TDI Quattro S A
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (100%) | 683 | 83.6% | 0.11 |
| Other (0%) | 1 | 100% | 0 |
| Gas Bi-Fuel (0%) | 1 | 100% | 0 |
| Diesel (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2018 Audi Q5 S Line TDI Quattro 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 2018 Audi Q5 S Line TDI Quattro S A vehicles fall between 53,800 and 79,101 miles.
2018 Audi Q5 S Line TDI Quattro S A — Still on the Road
Strong survival — 320 vehicles still getting MOTs in 2025, 84% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2022–2025.
MOT History Averages
Found a specific Audi Q5 S Line TDI Quattro S A?
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