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 Audi Tt Petrol 1984cc has had 3 MOT tests on record, passing every one. It has 23,944 miles on the clock, averaging 4,804 miles per year, well below the UK average of 7,400.
MOT & Mileage History for KF21 BYB
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 | 23,944 miles |
| Reading date | |
| Miles last year | 5,165 |
| Average per year | 4,804 |
| Mileage consistency | Consistent |
Check KF21 BYB
- 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 | KF21 BYB |
| Make | Audi |
| Model | Tt |
| Colour | Black |
| Fuel type | Petrol |
| Engine | 1984cc |
| Year | 2021 |
| First registered | |
| Area code | KF — Northampton, Luton and Northampton |
| Age identifier | 21 — March 2021 to August 2021 |
More KF21 B plates
Browse all KF21 B registrations from Northampton.
About KF21 BYB
What car is KF21 BYB?
KF21 BYB is a black Audi Tt, petrol (1984cc). First registered in Northampton in 2021.
What is the mileage of KF21 BYB?
The last recorded mileage for KF21 BYB was 23,944 miles, recorded on 16 Jul 2026 during its most recent MOT test.
Has KF21 BYB passed its MOT?
KF21 BYB has had 3 MOT tests with an 100% pass rate (3 passes, 0 failures). It last passed on 16 Jul 2026.
Is KF21 BYB ULEZ compliant?
Based on its fuel type and registration year, KF21 BYB 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 KF21 BYB?
KF21 BYB is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.