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 1968cc has had 8 MOT tests on record, passing 7 and failing once (88% pass rate). It has 67,744 miles on the clock, averaging 8,859 miles per year, around the UK average of 7,400. The 2.0 TDI engine is known for crlb and egr valve.
MOT & Mileage History for MM17 ONX
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
About average| Latest reading | 67,744 miles |
| Reading date | |
| Average per year | 8,859 |
| Mileage consistency | Consistent |
Check MM17 ONX
- 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 8 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.
CRLB
EGR Valve
Clogs quickly with soot/carbon deposits.
Explore more about the Seat Leon
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Vehicle Details
| Registration | MM17 ONX |
| Make | Seat |
| Model | Leon |
| Colour | Purple |
| Fuel type | Diesel |
| Engine | 1968cc |
| Year | 2017 |
| First registered | |
| Area code | MM — Manchester, Manchester and Merseyside |
| Age identifier | 17 — March 2017 to August 2017 |
More MM17 O plates
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About MM17 ONX
What car is MM17 ONX?
MM17 ONX is an purple Seat Leon, diesel (1968cc). First registered in Manchester in 2017.
What is the mileage of MM17 ONX?
The last recorded mileage for MM17 ONX was 67,744 miles, recorded on 11 Feb 2026 during its most recent MOT test.
Has MM17 ONX passed its MOT?
MM17 ONX has had 8 MOT tests with an 88% pass rate (7 passes, 1 failure). It last passed on 11 Feb 2026.
Is MM17 ONX ULEZ compliant?
Based on its fuel type and registration year, MM17 ONX 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 MM17 ONX?
MM17 ONX is approximately 9 years old. Age identifier 17 means registered between 1 March 2017 and 31 August 2017.