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 3 MOT tests on record, passing every one. It has 20,334 miles on the clock, averaging 2,855 miles per year, well below the UK average of 7,400.
MOT & Mileage History for BU21 KNM
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
Low mileage| Latest reading | 20,334 miles |
| Reading date | |
| Miles last year | 2,491 |
| Average per year | 2,855 |
| Mileage consistency | Consistent |
Check BU21 KNM
- 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 3 tests on record
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Vehicle Details
| Registration | BU21 KNM |
| Make | Mazda |
| Model | 3 |
| Colour | Red |
| Fuel type | Petrol |
| Engine | 1998cc |
| Year | 2021 |
| First registered | |
| Area code | BU — Birmingham, Birmingham |
| Age identifier | 21 — March 2021 to August 2021 |
More BU21 K plates
Browse all BU21 K registrations from Birmingham.
About BU21 KNM
What car is BU21 KNM?
BU21 KNM is a red Mazda 3, petrol (1998cc). First registered in Birmingham in 2021.
What is the mileage of BU21 KNM?
The last recorded mileage for BU21 KNM was 20,334 miles, recorded on 2 Jul 2026 during its most recent MOT test.
Has BU21 KNM passed its MOT?
BU21 KNM has had 3 MOT tests with an 100% pass rate (3 passes, 0 failures). It last passed on 2 Jul 2026.
Is BU21 KNM ULEZ compliant?
Based on its fuel type and registration year, BU21 KNM 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 BU21 KNM?
BU21 KNM is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.