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 4 MOT tests on record, passing 3 and failing once (75% pass rate). It has 65,053 miles on the clock, averaging 10,917 miles per year, above 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 HN21 CZL
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
Above average| Latest reading | 65,053 miles |
| Reading date | |
| Miles last year | 3 |
| Average per year | 10,917 |
| Mileage consistency | Consistent |
Check HN21 CZL
- 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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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 | HN21 CZL |
| Make | Volkswagen |
| Model | Polo |
| Colour | Grey |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2021 |
| First registered | |
| Area code | HN — Portsmouth, Hampshire and Dorset |
| Age identifier | 21 — March 2021 to August 2021 |
More HN21 C plates
Browse all HN21 C registrations from Portsmouth.
About HN21 CZL
What car is HN21 CZL?
HN21 CZL is an grey Volkswagen Polo, petrol (999cc). First registered in Portsmouth in 2021.
What is the mileage of HN21 CZL?
The last recorded mileage for HN21 CZL was 65,053 miles, recorded on 4 Apr 2026 during its most recent MOT test.
Has HN21 CZL passed its MOT?
HN21 CZL has had 4 MOT tests with a 75% pass rate (3 passes, 1 failure). It last passed on 4 Apr 2026.
Is HN21 CZL ULEZ compliant?
Based on its fuel type and registration year, HN21 CZL 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 HN21 CZL?
HN21 CZL is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.