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 2020 Seat Leon Petrol 1498cc has had 4 MOT tests on record, passing every one. It has 44,613 miles on the clock, averaging 10,904 miles per year, above the UK average of 7,400. The 1.5 TSI Evo engine is known for daca.
MOT & Mileage History for DE20 UUN
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 | 44,613 miles |
| Reading date | |
| Miles last year | 18,687 |
| Average per year | 10,904 |
| Mileage consistency | Variable |
Check DE20 UUN
- 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 4 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.
DACA
ECU software mishandles ACT deactivation and turbo spool on cold starts, causing lag/judder (manuals worst).
Explore more about the Seat Leon
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Vehicle Details
| Registration | DE20 UUN |
| Make | Seat |
| Model | Leon |
| Colour | Black |
| Fuel type | Petrol |
| Engine | 1498cc |
| Year | 2020 |
| First registered | |
| Area code | DE — Chester, Deeside to Shrewsbury |
| Age identifier | 20 — March 2020 to August 2020 |
More DE20 U plates
Browse all DE20 U registrations from Chester.
About DE20 UUN
What car is DE20 UUN?
DE20 UUN is a black Seat Leon, petrol (1498cc). First registered in Chester in 2020.
What is the mileage of DE20 UUN?
The last recorded mileage for DE20 UUN was 44,613 miles, recorded on 12 Jun 2026 during its most recent MOT test.
Has DE20 UUN passed its MOT?
DE20 UUN has had 4 MOT tests with an 100% pass rate (4 passes, 0 failures). It last passed on 12 Jun 2026.
Is DE20 UUN ULEZ compliant?
Based on its fuel type and registration year, DE20 UUN 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 DE20 UUN?
DE20 UUN is approximately 6 years old. Age identifier 20 means registered between 1 March 2020 and 31 August 2020.