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 1 MOT test on record, passing every one. It has 71,199 miles on the clock at the last MOT. 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 BX18 KNK
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gaps in MOT history
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- Plate & colour change history
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- Service interval analysis
- Warranty work logged
Full MOT Test History 1 test 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 | BX18 KNK |
| Make | Audi |
| Model | A3 |
| Colour | White |
| Fuel type | Petrol |
| Engine | 999cc |
| Year | 2018 |
| First registered | |
| Area code | BX — Birmingham, Birmingham |
| Age identifier | 18 — March 2018 to August 2018 |
More BX18 K plates
Browse all BX18 K registrations from Birmingham.
About BX18 KNK
What car is BX18 KNK?
BX18 KNK is a white Audi A3, petrol (999cc). First registered in Birmingham in 2018.
What is the mileage of BX18 KNK?
The last recorded mileage for BX18 KNK was 71,199 miles, recorded on 9 Jul 2021 during its most recent MOT test.
Has BX18 KNK passed its MOT?
BX18 KNK has had 1 MOT tests with an 100% pass rate (1 pass, 0 failures). It last passed on 9 Jul 2021.
Is BX18 KNK ULEZ compliant?
Based on its fuel type and registration year, BX18 KNK 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 BX18 KNK?
BX18 KNK is approximately 8 years old. Age identifier 18 means registered between 1 March 2018 and 31 August 2018.