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 Mini Cooper Petrol 1499cc has had 3 MOT tests on record, passing every one. It has 27,849 miles on the clock, averaging 3,195 miles per year, well below the UK average of 7,400. The 1.5 B38 TwinPower Turbo engine is known for b38a15a and timing chain and guides.
MOT & Mileage History for MJ21 KNB
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 | 27,849 miles |
| Reading date | |
| Miles last year | 2,160 |
| Average per year | 3,195 |
| Mileage consistency | Consistent |
Check MJ21 KNB
- 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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Buyers comparing the Mini Cooper often also look at these models. Check their MOT history and reliability before deciding:
Reported issues for this Mini Cooper
These are the most commonly reported problems on Mini Cooper models (2014–2023), based on owner reports and workshop data across the UK.
B38A15A
Timing Chain and Guides
Chain stretches prematurely; guides can break.
Common faults, what to check, and what to pay
Explore more about the Mini Cooper
Thinking about buying this car? These resources will help you make an informed decision.
Vehicle Details
| Registration | MJ21 KNB |
| Make | Mini |
| Model | Cooper |
| Colour | Grey |
| Fuel type | Petrol |
| Engine | 1499cc |
| Year | 2021 |
| First registered | |
| Area code | MJ — Manchester, Manchester and Merseyside |
| Age identifier | 21 — March 2021 to August 2021 |
More MJ21 K plates
Browse all MJ21 K registrations from Manchester.
About MJ21 KNB
What car is MJ21 KNB?
MJ21 KNB is an grey Mini Cooper, petrol (1499cc). First registered in Manchester in 2021.
What is the mileage of MJ21 KNB?
The last recorded mileage for MJ21 KNB was 27,849 miles, recorded on 23 Mar 2026 during its most recent MOT test.
Has MJ21 KNB passed its MOT?
MJ21 KNB has had 3 MOT tests with an 100% pass rate (3 passes, 0 failures). It last passed on 23 Mar 2026.
Is MJ21 KNB ULEZ compliant?
Based on its fuel type and registration year, MJ21 KNB 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 MJ21 KNB?
MJ21 KNB is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.