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 2018 Seat Leon Diesel 1598cc has had 8 MOT tests on record, passing 6 and failing 2 (75% pass rate). It has 244,904 miles on the clock, averaging 43,579 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 KN18 LLJ
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gaps in MOT history
Mileage Analysis
Above average| Latest reading | 244,904 miles |
| Reading date | |
| Miles last year | 64,132 |
| Average per year | 43,579 |
| Mileage consistency | Variable |
Check KN18 LLJ
- 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 8 tests on record
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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 | KN18 LLJ |
| Make | Seat |
| Model | Leon |
| Colour | White |
| Fuel type | Diesel |
| Engine | 1598cc |
| Year | 2018 |
| First registered | |
| Area code | KN — Luton, Luton and Northampton |
| Age identifier | 18 — March 2018 to August 2018 |
More KN18 L plates
Browse all KN18 L registrations from Luton.
About KN18 LLJ
What car is KN18 LLJ?
KN18 LLJ is a white Seat Leon, diesel (1598cc). First registered in Luton in 2018.
What is the mileage of KN18 LLJ?
The last recorded mileage for KN18 LLJ was 244,904 miles, recorded on 1 Oct 2025 during its most recent MOT test.
Has KN18 LLJ passed its MOT?
KN18 LLJ has had 8 MOT tests with a 75% pass rate (6 passes, 2 failures). It last passed on 1 Oct 2025.
Is KN18 LLJ ULEZ compliant?
Based on its fuel type and registration year, KN18 LLJ 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 KN18 LLJ?
KN18 LLJ is approximately 8 years old. Age identifier 18 means registered between 1 March 2018 and 31 August 2018.