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 Volkswagen Polo Petrol 999cc has had 3 MOT tests on record, passing every one. It has 20,816 miles on the clock, averaging 2,679 miles per year, well below the UK average of 7,400. The 1.0 TSI engine is known for 1. carbon buildup on intake valves and 2. turbocharger actuator/wastegate linkage failure. Common Volkswagen Polo issues include infotainment system glitches and component affected.
MOT & Mileage History for ST21 FSN
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
Low mileage| Latest reading | 20,816 miles |
| Reading date | |
| Miles last year | 3,220 |
| Average per year | 2,679 |
| Mileage consistency | Consistent |
Check ST21 FSN
- 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 3 tests on record
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Buyers comparing the Volkswagen Polo often also look at these models. Check their MOT history and reliability before deciding:
Reported issues for this Volkswagen Polo
These are the most commonly reported problems on Volkswagen Polo models (2017–2024), based on owner reports and workshop data across the UK.
Infotainment System Glitches
Component affected
What goes wrong
Symptoms
1. Carbon Buildup on Intake Valves
Direct-injection petrol engines like the CHZB lack fuel spray across the intake valves during the induction stroke. Without this natural cleaning action, carbon deposits accumulate on the valve stems and seats, restricting airflow.[2]
2. Turbocharger Actuator/Wastegate Linkage Failure
The actuator linkage connecting the wastegate solenoid to the wastegate valve becomes faulty or loose, causing loss of boost control. Many repair shops misdiagnose this as full turbocharger failure and recommend a costly replacement (€1,000+) when only the actuator arm needs repair (€150).[3]
Common faults, what to check, and what to pay
Explore more about the Volkswagen Polo
Thinking about buying this car? These resources will help you make an informed decision.
Vehicle Details
| Registration | ST21 FSN |
| Make | Volkswagen |
| Model | Polo |
| Colour | Black |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2021 |
| First registered | |
| Area code | ST — Dundee, Scotland |
| Age identifier | 21 — March 2021 to August 2021 |
More ST21 F plates
Browse all ST21 F registrations from Dundee.
About ST21 FSN
What car is ST21 FSN?
ST21 FSN is an black Volkswagen Polo, petrol (999cc). First registered in Dundee in 2021.
What is the mileage of ST21 FSN?
The last recorded mileage for ST21 FSN was 20,816 miles, recorded on 13 Mar 2026 during its most recent MOT test.
Has ST21 FSN passed its MOT?
ST21 FSN has had 3 MOT tests with an 100% pass rate (3 passes, 0 failures). It last passed on 13 Mar 2026.
Is ST21 FSN ULEZ compliant?
Based on its fuel type and registration year, ST21 FSN 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 FSN?
ST21 FSN is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.