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 2001 Bmw 3 Series Petrol 2979cc has had 21 MOT tests on record, passing 19 and failing 2 (90% pass rate). It has 146,735 miles on the clock, averaging 5,165 miles per year, below the UK average of 7,400. The 3.0i engine is known for m54 3.0l (m54b30) and water pump and thermostat. Common Bmw 3 Series issues include rear subframe mount cracking (racp failure) and front lower control arm bushings.
MOT & Mileage History for KB51 BZN
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 | 146,735 miles |
| Reading date | |
| Miles last year | 4,501 |
| Average per year | 5,165 |
| Mileage consistency | Variable |
Check KB51 BZN
- Write-off & insurance claims Experian
- Outstanding finance check Experian
- Stolen vehicle check Experian
- Ownership changes Experian
- Mileage discrepancy alerts
- Plate & colour change history
- Franchised dealer records
- Independent garage visits
- Service interval analysis
- Warranty work logged
Full MOT Test History 21 tests on record
Similar cars to consider
Buyers comparing the Bmw 3 Series often also look at these models. Check their MOT history and reliability before deciding:
Reported issues for this Bmw 3 Series
These are the most commonly reported problems on Bmw 3 Series models (1998–2006), based on owner reports and workshop data across the UK.
Rear Subframe Mount Cracking (RACP Failure)
Fatigue cracks develop at the mounting points due to corrosion and stress; BMW's foam injection "fix" often fails, leading to subframe tearing. Affects **ALL body styles** (saloon, estate, coupe, convertible). · Typical repair: £800-£2,000 (reinforcement plates + welding at indie BMW specialist; foam fix £300 but inadequate).
Front Lower Control Arm Bushings
Rubber cracks/splits, causing excessive movement. Affects **ALL body styles**. · Typical repair: £200-£400 (bush press + alignment at indie).
Window Regulators
Cables fray or pulleys break, jamming mechanism. Affects **ALL body styles** (worse on coupes/convertibles with frameless windows). · Typical repair: £150-£300 per door (regulator + motor at indie).
Cooling System Leaks (Non-Engine Specific)
Plastic cracks from age/heat cycles; excludes water pump (engine-related). Affects **ALL body styles**. · Typical repair: £150-£350 (tank + hoses).
M54 3.0L (M54B30)
Water pump (engine-driven, plastic impeller type) and thermostat
Common faults, what to check, and what to pay
Explore more about the Bmw 3 Series
Thinking about buying this car? These resources will help you make an informed decision.
Vehicle Details
| Registration | KB51 BZN |
| Make | Bmw |
| Model | 3 Series |
| Colour | Black |
| Fuel type | Petrol |
| Engine | 2979cc |
| Year | 2001 |
| First registered | |
| Area code | KB — Northampton, Luton and Northampton |
| Age identifier | 51 — September 2001 to February 2002 |
More KB51 B plates
Browse all KB51 B registrations from Northampton.
About KB51 BZN
What car is KB51 BZN?
KB51 BZN is a black Bmw 3 Series, petrol (2979cc). First registered in Northampton in 2001.
What is the mileage of KB51 BZN?
The last recorded mileage for KB51 BZN was 146,735 miles, recorded on 4 Mar 2024 during its most recent MOT test.
Has KB51 BZN passed its MOT?
KB51 BZN has had 21 MOT tests with an 90% pass rate (19 passes, 2 failures). It last passed on 4 Mar 2024.
Is KB51 BZN ULEZ compliant?
Based on its fuel type and registration year, KB51 BZN is likely not ULEZ compliant. As a petrol vehicle registered in 2001, it typically does not meet the Euro 4 emission standard required. This is an estimate — confirm with TfL's ULEZ checker.
How old is KB51 BZN?
KB51 BZN is approximately 25 years old. Age identifier 51 means registered between 1 September 2001 and 28 February 2002.