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 2018 Audi A3 Petrol 999cc has had 7 MOT tests on record, passing 6 and failing once (86% pass rate). It has 58,076 miles on the clock, averaging 3,849 miles per year, well below the UK average of 7,400. The 1.0 TFSI engine is known for 1. carbon buildup on intake valves and 2. turbocharger actuator/wastegate linkage failure.
MOT & Mileage History for KW18 CNO
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failure recorded
Average miles/year
Gap in MOT history
Mileage Analysis
Low mileage| Latest reading | 58,076 miles |
| Reading date | |
| Miles last year | 4,822 |
| Average per year | 3,849 |
| Mileage consistency | Variable |
Check KW18 CNO
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Full MOT Test History 7 tests on record
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Reported issues for this Audi A3
These are the most commonly reported problems on Audi A3 models (2012–2020), based on owner reports and workshop data across the UK.
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
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Vehicle Details
| Registration | KW18 CNO |
| Make | Audi |
| Model | A3 |
| Colour | Yellow |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2018 |
| First registered | |
| Area code | KW — Luton, Luton and Northampton |
| Age identifier | 18 — March 2018 to August 2018 |
More KW18 C plates
Browse all KW18 C registrations from Luton.
About KW18 CNO
What car is KW18 CNO?
KW18 CNO is a yellow Audi A3, petrol (999cc). First registered in Luton in 2018.
What is the mileage of KW18 CNO?
The last recorded mileage for KW18 CNO was 58,076 miles, recorded on 8 Oct 2025 during its most recent MOT test.
Has KW18 CNO passed its MOT?
KW18 CNO has had 7 MOT tests with an 86% pass rate (6 passes, 1 failure). It last passed on 8 Oct 2025.
Is KW18 CNO ULEZ compliant?
Based on its fuel type and registration year, KW18 CNO 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 KW18 CNO?
KW18 CNO is approximately 8 years old. Age identifier 18 means registered between 1 March 2018 and 31 August 2018.