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.
Check SJ21 YNW
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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
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Vehicle Details
| Registration | SJ21 YNW |
| Make | Volkswagen |
| Model | Polo |
| Colour | Grey |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2021 |
| First registered | |
| Area code | SJ — Glasgow, Scotland |
| Age identifier | 21 — March 2021 to August 2021 |
More SJ21 Y plates
Browse all SJ21 Y registrations from Glasgow.
About SJ21 YNW
What car is SJ21 YNW?
SJ21 YNW is an grey Volkswagen Polo, petrol (999cc). First registered in Glasgow in 2021.
Is SJ21 YNW ULEZ compliant?
Based on its fuel type and registration year, SJ21 YNW 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 SJ21 YNW?
SJ21 YNW is approximately 5 years old. Age identifier 21 means registered between 1 March 2021 and 31 August 2021.