Vehicle summary
ULEZ status is estimated based on fuel type and registration year. It may not reflect the actual emission standard of this vehicle. Check with TfL for a definitive answer.
At a glance
This 2017 Seat Leon Diesel 1598cc has had 10 MOT tests on record, passing 7 and failing 3 (70% pass rate). It has 117,921 miles on the clock, averaging 11,604 miles per year, above the UK average of 7,400. The 1.6 TDI engine is known for clha and diesel particulate filter (dpf).
MOT & Mileage History for KO17 YNJ
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gap in MOT history
Mileage Analysis
Above average| Latest reading | 117,921 miles |
| Reading date | |
| Miles last year | 100 |
| Average per year | 11,604 |
| Mileage consistency | Consistent |
Check KO17 YNJ
- Write-off & insurance claims Experian
- Outstanding finance check Experian
- Stolen vehicle check Experian
- Ownership changes Experian
- Mileage discrepancy alerts
- Plate & colour change history
- Franchised dealer records
- Independent garage visits
- Service interval analysis
- Warranty work logged
Full MOT Test History 10 tests on record
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Buyers comparing the Seat Leon often also look at these models. Check their MOT history and reliability before deciding:
Reported issues for this Seat Leon
These are the most commonly reported problems on Seat Leon models (2012–2020), based on owner reports and workshop data across the UK.
CLHA
Diesel Particulate Filter (DPF)
Clogs from poor fuel quality, short journeys, or failed regens, leading to backpressure.
Explore more about the Seat Leon
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Vehicle Details
| Registration | KO17 YNJ |
| Make | Seat |
| Model | Leon |
| Colour | Black |
| Fuel type | Diesel |
| Engine | 1598cc |
| Year | 2017 |
| First registered | |
| Area code | KO — Luton, Luton and Northampton |
| Age identifier | 17 — March 2017 to August 2017 |
More KO17 Y plates
Browse all KO17 Y registrations from Luton.
About KO17 YNJ
What car is KO17 YNJ?
KO17 YNJ is a black Seat Leon, diesel (1598cc). First registered in Luton in 2017.
What is the mileage of KO17 YNJ?
The last recorded mileage for KO17 YNJ was 117,921 miles, recorded on 6 Feb 2026 during its most recent MOT test.
Has KO17 YNJ passed its MOT?
KO17 YNJ has had 10 MOT tests with a 70% pass rate (7 passes, 3 failures). It last passed on 6 Feb 2026.
Is KO17 YNJ ULEZ compliant?
Based on its fuel type and registration year, KO17 YNJ is likely ULEZ compliant. Diesel post-2015 (Euro 6). This is an estimate based on typical emission standards — confirm with TfL's ULEZ checker for a definitive answer.
How old is KO17 YNJ?
KO17 YNJ is approximately 9 years old. Age identifier 17 means registered between 1 March 2017 and 31 August 2017.