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 1498cc has had 7 MOT tests on record, passing 6 and failing once (86% pass rate). It has 46,721 miles on the clock, averaging 8,846 miles per year, around the UK average of 7,400. The 1.5 TFSI engine is known for dada and engine management software / act (active cylinder technology) calibration.
MOT & Mileage History for CA18 UBX
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
About average| Latest reading | 46,721 miles |
| Reading date | |
| Miles last year | 4,731 |
| Average per year | 8,846 |
| Mileage consistency | Consistent |
Check CA18 UBX
- Write-off & insurance claims Experian
- Outstanding finance check Experian
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- Plate & colour change history
- Franchised dealer records
- Independent garage visits
- Service interval analysis
- Warranty work logged
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.
DADA
Engine management software / ACT (Active Cylinder Technology) calibration
Faulty ECU mapping causes poor transition between 2- and 4-cylinder modes, leading to hesitation, juddering, or "kangarooing" (RPM drop/stall risk in 1st gear). Cross-model issue in manuals.[1][2][3][4]
Common faults, what to check, and what to pay
Explore more about the Audi A3
Thinking about buying this car? These resources will help you make an informed decision.
Vehicle Details
| Registration | CA18 UBX |
| Make | Audi |
| Model | A3 |
| Colour | Grey |
| Fuel type | Petrol |
| Engine | 1498cc |
| Year | 2018 |
| First registered | |
| Area code | CA — Cardiff, Cymru (Wales) |
| Age identifier | 18 — March 2018 to August 2018 |
More CA18 U plates
Browse all CA18 U registrations from Cardiff.
About CA18 UBX
What car is CA18 UBX?
CA18 UBX is a grey Audi A3, petrol (1498cc). First registered in Cardiff in 2018.
What is the mileage of CA18 UBX?
The last recorded mileage for CA18 UBX was 46,721 miles, recorded on 24 Jan 2026 during its most recent MOT test.
Has CA18 UBX passed its MOT?
CA18 UBX has had 7 MOT tests with an 86% pass rate (6 passes, 1 failure). It last passed on 24 Jan 2026.
Is CA18 UBX ULEZ compliant?
Based on its fuel type and registration year, CA18 UBX 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 CA18 UBX?
CA18 UBX is approximately 8 years old. Age identifier 18 means registered between 1 March 2018 and 31 August 2018.