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 2021 Mazda 3 Petrol 1998cc has had 4 MOT tests on record, passing 3 and failing once (75% pass rate). It has 59,424 miles on the clock, averaging 5,682 miles per year, below the UK average of 7,400.
MOT & Mileage History for NX21 KGN
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
Below average| Latest reading | 59,424 miles |
| Reading date | |
| Average per year | 5,682 |
| Mileage consistency | Consistent |
Check NX21 KGN
- Write-off & insurance claims Experian
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- Plate & colour change history
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- Independent garage visits
- Service interval analysis
- Warranty work logged
Full MOT Test History 4 tests on record
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Vehicle Details
| Registration | NX21 KGN |
| Make | Mazda |
| Model | 3 |
| Colour | Grey |
| Fuel type | Petrol |
| Engine | 1998cc |
| Year | 2021 |
| First registered | |
| Area code | NX — Stockton, North |
| Age identifier | 21 — March 2021 to August 2021 |
More NX21 K plates
Browse all NX21 K registrations from Stockton.
About NX21 KGN
What car is NX21 KGN?
NX21 KGN is an grey Mazda 3, petrol (1998cc). First registered in Stockton in 2021.
What is the mileage of NX21 KGN?
The last recorded mileage for NX21 KGN was 59,424 miles, recorded on 28 Apr 2026 during its most recent MOT test.
Has NX21 KGN passed its MOT?
NX21 KGN has had 4 MOT tests with a 75% pass rate (3 passes, 1 failure). It last passed on 28 Apr 2026.
Is NX21 KGN ULEZ compliant?
Based on its fuel type and registration year, NX21 KGN 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 NX21 KGN?
NX21 KGN is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.