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2004 BMW 330xi

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By Research the Car 5 min read

The 2004 BMW 330xi is part of the E46 generation, known for its blend of sporty handling, comfortable ride, and timeless design. It came equipped with a 3.0-liter inline-six engine (M54B30), producing 225 horsepower and 214 lb-ft of torque. Other engine options for the E46 generation include a smaller 2.5-liter inline-six in the 325i and a more powerful 3.2-liter inline-six in the M3. The 330xi specifically came standard with a 5-speed automatic transmission, although a 5-speed manual was also available. Owners often praise the E46’s responsive steering, balanced chassis, and engaging driving experience. However, common complaints include the cost of maintenance and repairs, potential for electrical issues, and the age-related wear and tear that affects many components in a vehicle of this vintage.

Engine

M54B30 3.0L Inline-Six

  • Oil Leaks (Valve Cover Gasket & Oil Filter Housing Gasket)
    • Description/Symptoms: Oil leaks are common due to the aging and hardening of the valve cover gasket and oil filter housing gasket. Symptoms include visible oil leaks on the engine, burning oil smell, and low oil levels.
    • Solution: Replace the valve cover gasket and oil filter housing gasket.
    • Estimated Cost to Fix: $200 - $500
    • Recalls: None Found
  • Cooling System Issues (Expansion Tank, Water Pump, Thermostat)
    • Description/Symptoms: The cooling system components (expansion tank, water pump, thermostat) are prone to failure due to age and heat cycling. Symptoms include overheating, coolant leaks, and a non-functional heater.
    • Solution: Replace the faulty components. The entire system may need refreshing if neglected.
    • Estimated Cost to Fix: $150 - $800+
    • Recalls: None Found
  • VANOS (Variable Valve Timing) Issues
    • Description/Symptoms: The VANOS system can develop issues, such as worn seals or a malfunctioning solenoid, leading to rough idling, loss of power, and decreased fuel efficiency.
    • Solution: Replace the VANOS seals and/or solenoid.
    • Estimated Cost to Fix: $150 - $600+
    • Recalls: None Found
  • DISA Valve Failure
    • Description/Symptoms: The DISA (Differential Air Intake System) valve, which adjusts intake runner length for optimal performance, can fail, leading to a rattling noise, poor performance, and a check engine light.
    • Solution: Replace the DISA valve.
    • Estimated Cost to Fix: $200 - $400
    • Recalls: None Found

Transmission

GM A5S390R 5-Speed Automatic

  • Slipping/Harsh Shifting
    • Description/Symptoms: The GM A5S390R automatic transmission can experience slipping between gears, harsh or delayed shifts, and overall poor performance as it ages. This is often due to worn valve body components or low fluid levels.
    • Solution: Perform a transmission fluid flush and filter change. If the problem persists, the valve body may need to be rebuilt or replaced, or the entire transmission may need replacement.
    • Estimated Cost to Fix: $150 (fluid flush) - $3000+ (transmission replacement)
    • Recalls: None Found

Getrag S5D 250G 5-Speed Manual

  • Clutch Failure
    • Description/Symptoms: Clutch wear is common in manual transmissions, leading to slipping, difficulty engaging gears, and a high clutch pedal engagement point.
    • Solution: Replace the clutch kit (clutch disc, pressure plate, and throw-out bearing).
    • Estimated Cost to Fix: $600 - $1500
    • Recalls: None Found

Suspension

  • Control Arm Bushing Failure
    • Description/Symptoms: The front control arm bushings are prone to wear and tear, leading to vibrations at highway speeds, clunking noises, and poor handling.
    • Solution: Replace the front control arm bushings or the entire control arms.
    • Estimated Cost to Fix: $200 - $600
    • Recalls: None Found
  • Strut/Shock Failure
    • Description/Symptoms: The struts and shocks can wear out over time, leading to a bouncy ride, poor handling, and reduced stability.
    • Solution: Replace the struts and shocks.
    • Estimated Cost to Fix: $400 - $1000+
    • Recalls: None Found
  • Rear Subframe Mount Failure
    • Description/Symptoms: The rear subframe mounts can crack or tear, leading to clunking noises from the rear of the vehicle, poor handling, and potential damage to the chassis. This is more prevalent in earlier E46 models.
    • Solution: Inspect the rear subframe mounts and replace them if necessary. Reinforcement plates may be recommended to prevent future issues.
    • Estimated Cost to Fix: $500 - $2000+
    • Recalls: None Found

Electrical

  • Window Regulator Failure
    • Description/Symptoms: The window regulators are known to fail, resulting in windows that either do not move or move erratically.
    • Solution: Replace the window regulator.
    • Estimated Cost to Fix: $200 - $400
    • Recalls: None Found
  • Instrument Cluster Pixel Loss
    • Description/Symptoms: The pixels in the instrument cluster can fade or disappear, making it difficult to read important information.
    • Solution: Replace or repair the instrument cluster.
    • Estimated Cost to Fix: $100 - $500+
    • Recalls: None Found
  • Fuel Pump Failure
    • Description/Symptoms: A failing fuel pump can cause the engine to stall, hesitate, or not start at all.
    • Solution: Replace the fuel pump.
    • Estimated Cost to Fix: $300 - $600
    • Recalls: None Found

Exterior

  • Rust (Wheel Arches, Jacking Points)
    • Description/Symptoms: Rust can develop on the wheel arches, jacking points, and other areas of the body, especially in regions with harsh winters or road salt usage.
    • Solution: Repair or replace the affected panels.
    • Estimated Cost to Fix: $200 - $1000+ (depending on severity)
    • Recalls: None Found

Interior

  • Headliner Sagging
    • Description/Symptoms: The headliner fabric can detach from the backing board and sag.
    • Solution: Replace the headliner fabric or the entire headliner board.
    • Estimated Cost to Fix: $200 - $500
    • Recalls: None Found
  • Glove Box Sagging/Falling Open
    • Description/Symptoms: The glove box latch mechanism can fail, causing the glove box to sag or fall open.
    • Solution: Replace the glove box latch or the entire glove box assembly.
    • Estimated Cost to Fix: $50 - $200
    • Recalls: None Found

Summary

The 2004 BMW 330xi, while a desirable vehicle, has several common issues related to its age and design. Engine issues like oil leaks, cooling system problems, and VANOS malfunctions are frequent. Transmission problems, especially with the automatic variants, can be costly. Suspension issues like control arm bushing and strut failures affect handling. Electrical problems like window regulator and instrument cluster pixel loss are also common. Rust can also be a significant concern, especially in certain climates. While some repairs are relatively inexpensive, others can be quite costly, making pre-purchase inspection and preventative maintenance crucial. Overall, while a fun car to drive, it is important to be aware of the cost of repairs that can be expected from a vehicle of this age.

BMW, 330xi
BMW 330xi 2004
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