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 A3 S Line 35 Tdi S-A Diesel 1968cc has had 3 MOT tests on record, passing every one. It has 49,352 miles on the clock, averaging 10,732 miles per year, above the UK average of 7,400.
MOT & Mileage History for KN21 THX
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
Above average| Latest reading | 49,352 miles |
| Reading date | |
| Miles last year | 12,605 |
| Average per year | 10,732 |
| Mileage consistency | Consistent |
Check KN21 THX
- Write-off & insurance claims Experian
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- Plate & colour change history
- Franchised dealer records
- Independent garage visits
- Service interval analysis
- Warranty work logged
Full MOT Test History 3 tests on record
Common faults, what to check, and what to pay
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Vehicle Details
| Registration | KN21 THX |
| Make | Audi |
| Model | A3 S Line 35 Tdi S-A |
| Colour | Grey |
| Fuel type | Diesel |
| Engine | 1968cc |
| Year | 2021 |
| First registered | |
| Area code | KN — Luton, Luton and Northampton |
| Age identifier | 21 — March 2021 to August 2021 |
More KN21 T plates
Browse all KN21 T registrations from Luton.
About KN21 THX
What car is KN21 THX?
KN21 THX is a grey Audi A3 S Line 35 Tdi S-A, diesel (1968cc). First registered in Luton in 2021.
What is the mileage of KN21 THX?
The last recorded mileage for KN21 THX was 49,352 miles, recorded on 5 Sep 2025 during its most recent MOT test.
Has KN21 THX passed its MOT?
KN21 THX has had 3 MOT tests with an 100% pass rate (3 passes, 0 failures). It last passed on 5 Sep 2025.
Is KN21 THX ULEZ compliant?
Based on its fuel type and registration year, KN21 THX is likely ULEZ compliant. Diesel post-2015 (Euro 6). This is an estimate based on typical emission standards — confirm with TfL's ULEZ checker for a definitive answer.
How old is KN21 THX?
KN21 THX is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.