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 2004 Mercedes-Benz Clk Diesel 2685cc has had 34 MOT tests on record, passing 17 and failing 17 (50% pass rate). It has 138,849 miles on the clock, averaging 6,410 miles per year, below the UK average of 7,400.
MOT & Mileage History for GY54 ONX
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
Below average| Latest reading | 138,849 miles |
| Reading date | |
| Average per year | 6,410 |
| Mileage consistency | Variable |
Check GY54 ONX
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- Warranty work logged
Full MOT Test History 34 tests on record
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Vehicle Details
| Registration | GY54 ONX |
| Make | Mercedes-Benz |
| Model | Clk |
| Colour | Black |
| Fuel type | Diesel |
| Engine | 2685cc |
| Year | 2004 |
| First registered | |
| Area code | GY — Brighton, Garden of England |
| Age identifier | 54 — September 2004 to February 2005 |
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About GY54 ONX
What car is GY54 ONX?
GY54 ONX is a black Mercedes-Benz Clk, diesel (2685cc). First registered in Brighton in 2004.
What is the mileage of GY54 ONX?
The last recorded mileage for GY54 ONX was 138,849 miles, recorded on 28 Feb 2026 during its most recent MOT test.
Has GY54 ONX passed its MOT?
GY54 ONX has had 34 MOT tests with a 50% pass rate (17 passes, 17 failures). It last passed on 28 Feb 2026.
Is GY54 ONX ULEZ compliant?
Based on its fuel type and registration year, GY54 ONX is likely not ULEZ compliant. As a diesel vehicle registered in 2004, it typically does not meet the Euro 6 emission standard required. This is an estimate — confirm with TfL's ULEZ checker.
How old is GY54 ONX?
GY54 ONX is approximately 22 years old. Age identifier 54 means registered between 1 September 2004 and 28 February 2005.