Audi Tt (2018)
2018 Audi Tt
CarHunch analysed 4,128 real MOT records for the 2018 Audi Tt. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2018 Audi TT is significantly more reliable than the UK average, with a 91.9% first-time MOT pass rate against the national 80% benchmark—petrol models edge out diesel at 92.1% versus 89.7%, though both are well above average. However, nearly one in five of these cars have recorded a dangerous defect at some point, which is a meaningful concern for safety-conscious buyers.
At just over 30,000 miles median, these TTs are lightly driven for their age, which partly explains the strong pass rates. The typical car racks up 0.48 failures and 4.2 advisories per test, suggesting minor maintenance niggles rather than structural problems—so if you're buying one, get a pre-purchase inspection focused on suspension, brakes, and electrics rather than expecting major works.
What to check before buying a 2018 Audi Tt
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 Tt
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 |
|---|---|---|---|
| Petrol (93%) | 3,842 | 92.1% | 0.47 |
| Diesel (7%) | 286 | 89.7% | 0.6 |
Mileage Distribution
Most 2018 Audi Tt 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 Tt vehicles fall between 22,124 and 39,715 miles.
2018 Audi Tt — Still on the Road
Strong survival — 3,932 vehicles still getting MOTs in 2025, 98% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2020–2025.
MOT History Averages
Most Common MOT Issues — 2018 Audi Tt
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
38.7%
Nearside Front Tyre worn close to legal limit/worn on edge
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38.4%
Offside Front Tyre worn close to legal limit/worn on edge
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26.5%
Nearside Rear Tyre worn close to legal limit/worn on edge
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23.7%
Offside Rear Tyre worn close to legal limit/worn on edge
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21.3%
Rear Brake pad(s) wearing thin
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18.9%
Rear Brake disc worn, pitted or scored, but not seriously weakened
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12.9%
Offside Rear Brake disc worn, pitted or scored, but not seriously weakened
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12.5%
Nearside Rear Brake disc worn, pitted or scored, but not seriously weakened
Data covers a 3-year window centred on 2018. Counts include advisories and failures.
Found a specific Audi Tt?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.