Seat Unknown Reliability, MOT Pass Rate & Common Faults
Free Seat Unknown car check
Is the Seat Unknown reliable? We analysed 216 real MOT tests across 104 vehicles to find out.
Got a specific Seat Unknown? Enter the reg for a free check:
The Seat Unknown is above average for reliability based on real UK MOT data. Common problems include brakes imbalanced across an axle axle 2, parking brake: efficiency below requirements and exhaust has a major leak of exhaust gases. Here's everything you need to know before buying a used Seat Unknown.
Seat Unknown Number Plates
Number plates registered to a Seat Unknown. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Seat Unknown Problems — What Goes Wrong?
The most common reasons a Seat Unknown fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Seat Unknown Mileage — What's Normal?
How many miles does a typical Seat Unknown owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Seat Unknown Mileage Distribution
Total mileage recorded across all Seat Unknown MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
How Does the Seat Unknown Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Seat Unknown THIS CAR | 75.9% | 216 | 139,630 mi | — yrs |
| Seat Ibiza | 73.7% | 3,964,856 | 60,259 mi | 31 yrs |
| Seat Leon | 78% | 3,000,659 | 70,859 mi | 26 yrs |
| Seat Alhambra | 72.5% | 690,916 | 95,606 mi | 30 yrs |
| Peugeot Boxer 335 Pro L3H2 Bhdi | 86.3% | 313 | 62,876 mi | — yrs |
Compared to the Seat Ibiza (73.7% pass rate) and the Seat Leon (78.0% pass rate), the Seat Unknown sits in the middle of the pack on MOT reliability.
Found a Seat Unknown you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Seat UnknownShould you buy a used Seat Unknown?
The Seat Unknown has an overall MOT pass rate of 75.9% across 216 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Seat Unknown are brakes imbalanced across an axle axle 2 (2 recorded failures), parking brake: efficiency below requirements (2), and exhaust has a major leak of exhaust gases (2). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
A typical Seat Unknown owner drives around 7,903 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.