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 Slk Petrol 3199cc has had 18 MOT tests on record, passing 17 and failing once (94% pass rate). It has 51,767 miles on the clock, averaging 1,057 miles per year, well below the UK average of 7,400.
MOT & Mileage History for EX51 NAO
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failure recorded
Average miles/year
Gaps in MOT history
Mileage Analysis
Low mileage| Latest reading | 51,767 miles |
| Reading date | |
| Miles last year | 123 |
| Average per year | 1,057 |
| Mileage consistency | Variable |
Check EX51 NAO
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- Plate & colour change history
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- Independent garage visits
- Service interval analysis
- Warranty work logged
Full MOT Test History 18 tests on record
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Vehicle Details
| Registration | EX51 NAO |
| Make | Mercedes-Benz |
| Model | Slk |
| Colour | Silver |
| Fuel type | Petrol |
| Engine | 3199cc |
| Year | 2001 |
| First registered | |
| Area code | EX — Chelmsford, Essex |
| Age identifier | 51 — September 2001 to February 2002 |
More EX51 N plates
Browse all EX51 N registrations from Chelmsford.
About EX51 NAO
What car is EX51 NAO?
EX51 NAO is an silver Mercedes-Benz Slk, petrol (3199cc). First registered in Chelmsford in 2001.
What is the mileage of EX51 NAO?
The last recorded mileage for EX51 NAO was 51,767 miles, recorded on 14 Aug 2025 during its most recent MOT test.
Has EX51 NAO passed its MOT?
EX51 NAO has had 18 MOT tests with an 94% pass rate (17 passes, 1 failure). It last passed on 14 Aug 2025.
Is EX51 NAO ULEZ compliant?
Based on its fuel type and registration year, EX51 NAO 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 EX51 NAO?
EX51 NAO is approximately 25 years old. Age identifier 51 means registered between 1 September 2001 and 28 February 2002.