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 2001 Mercedes-Benz S-Class Petrol 3199cc has had 20 MOT tests on record, passing 14 and failing 6 (70% pass rate). It has 115,904 miles on the clock, averaging 4,961 miles per year, well below the UK average of 7,400.
MOT & Mileage History for HN51 BYZ
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gap in MOT history
Mileage Analysis
Low mileage| Latest reading | 115,904 miles |
| Reading date | |
| Average per year | 4,961 |
| Mileage consistency | Variable |
Check HN51 BYZ
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- Service interval analysis
- Warranty work logged
Full MOT Test History 20 tests on record
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Vehicle Details
| Registration | HN51 BYZ |
| Make | Mercedes-Benz |
| Model | S-Class |
| Colour | Silver |
| Fuel type | Petrol |
| Engine | 3199cc |
| Year | 2001 |
| First registered | |
| Area code | HN — Portsmouth, Hampshire and Dorset |
| Age identifier | 51 — September 2001 to February 2002 |
More HN51 B plates
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About HN51 BYZ
What car is HN51 BYZ?
HN51 BYZ is an silver Mercedes-Benz S-Class, petrol (3199cc). First registered in Portsmouth in 2001.
What is the mileage of HN51 BYZ?
The last recorded mileage for HN51 BYZ was 115,904 miles, recorded on 16 Jun 2020 during its most recent MOT test.
Has HN51 BYZ passed its MOT?
HN51 BYZ has had 20 MOT tests with a 70% pass rate (14 passes, 6 failures). It last passed on 16 Jun 2020.
Is HN51 BYZ ULEZ compliant?
Based on its fuel type and registration year, HN51 BYZ is likely not ULEZ compliant. As a petrol vehicle registered in 2001, it typically does not meet the Euro 4 emission standard required. This is an estimate — confirm with TfL's ULEZ checker.
How old is HN51 BYZ?
HN51 BYZ is approximately 25 years old. Age identifier 51 means registered between 1 September 2001 and 28 February 2002.