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 2003 Vauxhall Astra Petrol 1796cc has had 21 MOT tests on record, passing 14 and failing 7 (67% pass rate). It has 152,850 miles on the clock, averaging 7,175 miles per year, below the UK average of 7,400. Common Vauxhall Astra issues include central locking door mechanism and passenger compartment wiring connectors.
MOT & Mileage History for KB03 BYJ
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 | 152,850 miles |
| Reading date | |
| Miles last year | 201 |
| Average per year | 7,175 |
| Mileage consistency | Variable |
Check KB03 BYJ
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- Warranty work logged
Full MOT Test History 21 tests on record
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Reported issues for this Vauxhall Astra
These are the most commonly reported problems on Vauxhall Astra models (1998–2009), based on owner reports and workshop data across the UK.
Central locking door mechanism (driver's door microswitches and lock motors)
Microswitches in driver's door wear out, interrupting central locking signal; lock motors seize from dirt/moisture. · Typical repair: £100-250 (switches £20-50, motors £50-100 + labour).
Passenger compartment wiring connectors (transverse harness under carpet, front-rear junction)
Connectors corrode from wet carpets (leaks or spills), causing glitches in electrics/ECUs. · Typical repair: £150-400 (harness section £50-150 + drying/labour; full harness £300+).
Rear brake calipers (seizing/pistons)
Caliper pistons corrode/seize, causing uneven pad wear. · Typical repair: £200-450 per side (caliper £80-150 + discs/pads/labour).
Front suspension wheel bearings (integrated in hubs)
Bearings wear prematurely due to hub design, especially on pothole-heavy UK roads. · Typical repair: £250-500 per side (hub assembly £100-200 + labour/alignment).
Common faults, what to check, and what to pay
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Vehicle Details
| Registration | KB03 BYJ |
| Make | Vauxhall |
| Model | Astra |
| Colour | Blue |
| Fuel type | Petrol |
| Engine | 1796cc |
| Year | 2003 |
| First registered | |
| Area code | KB — Northampton, Luton and Northampton |
| Age identifier | 03 — March 2003 to August 2003 |
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About KB03 BYJ
What car is KB03 BYJ?
KB03 BYJ is a blue Vauxhall Astra, petrol (1796cc). First registered in Northampton in 2003.
What is the mileage of KB03 BYJ?
The last recorded mileage for KB03 BYJ was 152,850 miles, recorded on 31 Jan 2022 during its most recent MOT test.
Has KB03 BYJ passed its MOT?
KB03 BYJ has had 21 MOT tests with a 67% pass rate (14 passes, 7 failures). It last passed on 31 Jan 2022.
Is KB03 BYJ ULEZ compliant?
Based on its fuel type and registration year, KB03 BYJ is likely not ULEZ compliant. As a petrol vehicle registered in 2003, it typically does not meet the Euro 4 emission standard required. This is an estimate — confirm with TfL's ULEZ checker.
How old is KB03 BYJ?
KB03 BYJ is approximately 23 years old. Age identifier 03 means registered between 1 March 2003 and 31 August 2003.