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 Diesel 1598cc has had 7 MOT tests on record, passing every one. It has 119,355 miles on the clock, averaging 13,634 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 GY66 XON
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 | 119,355 miles |
| Reading date | |
| Miles last year | 9,159 |
| Average per year | 13,634 |
| Mileage consistency | Consistent |
Check GY66 XON
- 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 7 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.
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Vehicle Details
| Registration | GY66 XON |
| Make | Seat |
| Model | Leon |
| Colour | Grey |
| Fuel type | Diesel |
| Engine | 1598cc |
| Year | 2016 |
| First registered | |
| Area code | GY — Brighton, Garden of England |
| Age identifier | 66 — September 2016 to February 2017 |
More GY66 X plates
Browse all GY66 X registrations from Brighton.
About GY66 XON
What car is GY66 XON?
GY66 XON is a grey Seat Leon, diesel (1598cc). First registered in Brighton in 2016.
What is the mileage of GY66 XON?
The last recorded mileage for GY66 XON was 119,355 miles, recorded on 7 Oct 2025 during its most recent MOT test.
Has GY66 XON passed its MOT?
GY66 XON has had 7 MOT tests with an 100% pass rate (7 passes, 0 failures). It last passed on 7 Oct 2025.
Is GY66 XON ULEZ compliant?
Based on its fuel type and registration year, GY66 XON 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 GY66 XON?
GY66 XON is approximately 10 years old. Age identifier 66 means registered between 1 September 2016 and 28 February 2017.