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 2016 Seat Leon Petrol 1798cc has had 10 MOT tests on record, passing 8 and failing 2 (80% pass rate). It has 50,373 miles on the clock, averaging 4,396 miles per year, well below the UK average of 7,400. The 1.8 TSI engine is known for cjsa and piston rings.
MOT & Mileage History for KV66 EFN
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
Low mileage| Latest reading | 50,373 miles |
| Reading date | |
| Miles last year | 16 |
| Average per year | 4,396 |
| Mileage consistency | Variable |
Check KV66 EFN
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- Plate & colour change history
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- Service interval analysis
- Warranty work logged
Full MOT Test History 10 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.
CJSA
Piston rings (faulty design leading to excessive oil consumption)
Premature wear on thin piston rings causes high oil burn-off, often 1 quart per 1,000-2,000 miles.[1][6]
Explore more about the Seat Leon
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Vehicle Details
| Registration | KV66 EFN |
| Make | Seat |
| Model | Leon |
| Colour | Silver |
| Fuel type | Petrol |
| Engine | 1798cc |
| Year | 2016 |
| First registered | |
| Area code | KV — Luton, Luton and Northampton |
| Age identifier | 66 — September 2016 to February 2017 |
More KV66 E plates
Browse all KV66 E registrations from Luton.
About KV66 EFN
What car is KV66 EFN?
KV66 EFN is a silver Seat Leon, petrol (1798cc). First registered in Luton in 2016.
What is the mileage of KV66 EFN?
The last recorded mileage for KV66 EFN was 50,373 miles, recorded on 2 Jul 2026 during its most recent MOT test.
Has KV66 EFN passed its MOT?
KV66 EFN has had 10 MOT tests with an 80% pass rate (8 passes, 2 failures). It last passed on 2 Jul 2026.
Is KV66 EFN ULEZ compliant?
Based on its fuel type and registration year, KV66 EFN is likely ULEZ compliant. Petrol post-2005 (Euro 4). This is an estimate based on typical emission standards — confirm with TfL's ULEZ checker for a definitive answer.
How old is KV66 EFN?
KV66 EFN is approximately 10 years old. Age identifier 66 means registered between 1 September 2016 and 28 February 2017.