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 2004 Bmw 3 Series Petrol 2494cc has had 13 MOT tests on record, passing 10 and failing 3 (77% pass rate). It has 71,609 miles on the clock, averaging 4,083 miles per year, well below the UK average of 7,400. The 2.5i engine is known for m54b25. Common Bmw 3 Series issues include rear subframe mount cracking (racp failure) and front lower control arm bushings.
MOT & Mileage History for RN53 KNZ
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gap in MOT history
Mileage Analysis
Low mileage| Latest reading | 71,609 miles |
| Reading date | |
| Average per year | 4,083 |
| Mileage consistency | Variable |
Check RN53 KNZ
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Full MOT Test History 13 tests on record
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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).
M54B25
Diaphragm ruptures or hoses clog, pressurising crankcase and pushing oil into intake.
Common faults, what to check, and what to pay
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Vehicle Details
| Registration | RN53 KNZ |
| Make | Bmw |
| Model | 3 Series |
| Colour | Blue |
| Fuel type | Petrol |
| Engine | 2494cc |
| Year | 2004 |
| First registered | |
| Area code | RN — Reading, Reading |
| Age identifier | 53 — September 2003 to February 2004 |
More RN53 K plates
Browse all RN53 K registrations from Reading.
About RN53 KNZ
What car is RN53 KNZ?
RN53 KNZ is an blue Bmw 3 Series, petrol (2494cc). First registered in Reading in 2004.
What is the mileage of RN53 KNZ?
The last recorded mileage for RN53 KNZ was 71,609 miles, recorded on 22 Jul 2015 during its most recent MOT test.
Has RN53 KNZ passed its MOT?
RN53 KNZ has had 13 MOT tests with a 77% pass rate (10 passes, 3 failures). It last passed on 22 Jul 2015.
Is RN53 KNZ ULEZ compliant?
Based on its fuel type and registration year, RN53 KNZ is likely not ULEZ compliant. As a petrol vehicle registered in 2004, it typically does not meet the Euro 4 emission standard required. This is an estimate — confirm with TfL's ULEZ checker.
How old is RN53 KNZ?
RN53 KNZ is approximately 22 years old. Age identifier 53 means registered between 1 September 2003 and 28 February 2004.