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 8 MOT tests on record, passing 7 and failing once (88% pass rate). It has 109,819 miles on the clock, averaging 9,702 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 KT17 BYB
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failure recorded
Average miles/year
Gaps in MOT history
Mileage Analysis
Above average| Latest reading | 109,819 miles |
| Reading date | |
| Miles last year | 3,497 |
| Average per year | 9,702 |
| Mileage consistency | Variable |
Check KT17 BYB
- Write-off & insurance claims Experian
- Outstanding finance check Experian
- Stolen vehicle check Experian
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- 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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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 | KT17 BYB |
| Make | Seat |
| Model | Leon |
| Colour | Black |
| Fuel type | Diesel |
| Engine | 1598cc |
| Year | 2017 |
| First registered | |
| Area code | KT — Luton, Luton and Northampton |
| Age identifier | 17 — March 2017 to August 2017 |
More KT17 B plates
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About KT17 BYB
What car is KT17 BYB?
KT17 BYB is a black Seat Leon, diesel (1598cc). First registered in Luton in 2017.
What is the mileage of KT17 BYB?
The last recorded mileage for KT17 BYB was 109,819 miles, recorded on 2 Mar 2026 during its most recent MOT test.
Has KT17 BYB passed its MOT?
KT17 BYB has had 8 MOT tests with an 88% pass rate (7 passes, 1 failure). It last passed on 2 Mar 2026.
Is KT17 BYB ULEZ compliant?
Based on its fuel type and registration year, KT17 BYB 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 KT17 BYB?
KT17 BYB is approximately 9 years old. Age identifier 17 means registered between 1 March 2017 and 31 August 2017.