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 27,578 miles on the clock, averaging 5,547 miles per year, 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 GL21 CNU
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 | 27,578 miles |
| Reading date | |
| Miles last year | 4,911 |
| Average per year | 5,547 |
| Mileage consistency | Consistent |
Check GL21 CNU
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- 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 | GL21 CNU |
| Make | Volkswagen |
| Model | Polo |
| Colour | Black |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2021 |
| First registered | |
| Area code | GL — Maidstone, Garden of England |
| Age identifier | 21 — March 2021 to August 2021 |
More GL21 C plates
Browse all GL21 C registrations from Maidstone.
About GL21 CNU
What car is GL21 CNU?
GL21 CNU is a black Volkswagen Polo, petrol (999cc). First registered in Maidstone in 2021.
What is the mileage of GL21 CNU?
The last recorded mileage for GL21 CNU was 27,578 miles, recorded on 5 May 2026 during its most recent MOT test.
Has GL21 CNU passed its MOT?
GL21 CNU has had 3 MOT tests with an 100% pass rate (3 passes, 0 failures). It last passed on 5 May 2026.
Is GL21 CNU ULEZ compliant?
Based on its fuel type and registration year, GL21 CNU 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 GL21 CNU?
GL21 CNU is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.