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 2014 Seat Leon Diesel 1598cc has had 9 MOT tests on record, passing every one. It has 107,390 miles on the clock, averaging 9,519 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 DE14 UNN
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 | 107,390 miles |
| Reading date | |
| Miles last year | 8,962 |
| Average per year | 9,519 |
| Mileage consistency | Consistent |
Check DE14 UNN
- 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 9 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 | DE14 UNN |
| Make | Seat |
| Model | Leon |
| Colour | Red |
| Fuel type | Diesel |
| Engine | 1598cc |
| Year | 2014 |
| First registered | |
| Area code | DE — Chester, Deeside to Shrewsbury |
| Age identifier | 14 — March 2014 to August 2014 |
More DE14 U plates
Browse all DE14 U registrations from Chester.
About DE14 UNN
What car is DE14 UNN?
DE14 UNN is a red Seat Leon, diesel (1598cc). First registered in Chester in 2014.
What is the mileage of DE14 UNN?
The last recorded mileage for DE14 UNN was 107,390 miles, recorded on 24 Oct 2025 during its most recent MOT test.
Has DE14 UNN passed its MOT?
DE14 UNN has had 9 MOT tests with an 100% pass rate (9 passes, 0 failures). It last passed on 24 Oct 2025.
Is DE14 UNN ULEZ compliant?
Based on its fuel type and registration year, DE14 UNN is likely not ULEZ compliant. As a diesel vehicle registered in 2014, it typically does not meet the Euro 6 emission standard required. This is an estimate — confirm with TfL's ULEZ checker.
How old is DE14 UNN?
DE14 UNN is approximately 12 years old. Age identifier 14 means registered between 1 March 2014 and 31 August 2014.