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 Mercedes-Benz Cla Petrol 1332cc has had 3 MOT tests on record, passing 2 and failing once (67% pass rate). It has 43,426 miles on the clock, averaging 6,431 miles per year, below the UK average of 7,400.
MOT & Mileage History for KM21 NBJ
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 | 43,426 miles |
| Reading date | |
| Average per year | 6,431 |
| Mileage consistency | Consistent |
Check KM21 NBJ
- Write-off & insurance claims Experian
- Outstanding finance check Experian
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- 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 3 tests on record
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Vehicle Details
| Registration | KM21 NBJ |
| Make | Mercedes-Benz |
| Model | Cla |
| Colour | Grey |
| Fuel type | Petrol |
| Engine | 1332cc |
| Year | 2021 |
| First registered | |
| Area code | KM — Luton, Luton and Northampton |
| Age identifier | 21 — March 2021 to August 2021 |
More KM21 N plates
Browse all KM21 N registrations from Luton.
About KM21 NBJ
What car is KM21 NBJ?
KM21 NBJ is a grey Mercedes-Benz Cla, petrol (1332cc). First registered in Luton in 2021.
What is the mileage of KM21 NBJ?
The last recorded mileage for KM21 NBJ was 43,426 miles, recorded on 11 Sep 2025 during its most recent MOT test.
Has KM21 NBJ passed its MOT?
KM21 NBJ has had 3 MOT tests with a 67% pass rate (2 passes, 1 failure). It last passed on 11 Sep 2025.
Is KM21 NBJ ULEZ compliant?
Based on its fuel type and registration year, KM21 NBJ 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 KM21 NBJ?
KM21 NBJ is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.