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 Yamaha Tracer 900 Gt Petrol 847cc has had 4 MOT tests on record, passing 3 and failing once (75% pass rate). It has 21,489 miles on the clock, averaging 5,900 miles per year, below the UK average of 7,400.
MOT & Mileage History for ST21 ACU
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
Below average| Latest reading | 21,489 miles |
| Reading date | |
| Average per year | 5,900 |
| Mileage consistency | Consistent |
Check ST21 ACU
- 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 4 tests on record
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Vehicle Details
| Registration | ST21 ACU |
| Make | Yamaha |
| Model | Tracer 900 Gt |
| Colour | Blue |
| Fuel type | Petrol |
| Engine | 847cc |
| Year | 2021 |
| First registered | |
| Area code | ST — Dundee, Scotland |
| Age identifier | 21 — March 2021 to August 2021 |
More ST21 A plates
Browse all ST21 A registrations from Dundee.
About ST21 ACU
What car is ST21 ACU?
ST21 ACU is an blue Yamaha Tracer 900 Gt, petrol (847cc). First registered in Dundee in 2021.
What is the mileage of ST21 ACU?
The last recorded mileage for ST21 ACU was 21,489 miles, recorded on 20 May 2026 during its most recent MOT test.
Has ST21 ACU passed its MOT?
ST21 ACU has had 4 MOT tests with a 75% pass rate (3 passes, 1 failure). It last passed on 20 May 2026.
Is ST21 ACU ULEZ compliant?
Based on its fuel type and registration year, ST21 ACU 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 ST21 ACU?
ST21 ACU is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.