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2006 BMW 330i

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By Research the Car 4 min read

The 2006 BMW 330i, part of the E90 generation, is a popular sport sedan known for its blend of performance and luxury. The 330i features a 3.0-liter inline-six engine (N52B30) producing 255 horsepower and 220 lb-ft of torque. Other engine options for the 2006 E90 3 series include the 325i (N52) and 328i (N51/N52). Transmission options include a 6-speed manual and a 6-speed automatic. Owners often praise the 330i for its responsive handling, smooth engine, and comfortable interior. Common complaints often revolve around higher maintenance costs compared to non-European cars and the complexity of the vehicle’s electronics.

Engine

N52B30 3.0L Inline-Six

  • Oil Leaks (Valve Cover Gasket)
    • Description/Symptoms: Oil leaks are common around the valve cover gasket. Signs include oil pooling around the valve cover, burning oil smell, and low oil level.
    • Solution: Replace the valve cover gasket.
    • Estimated Cost to Fix: $200 - $400+
    • Recalls: None Found
  • Oil Filter Housing Gasket Leak
    • Description/Symptoms: Oil leak from the oil filter housing. Can manifest as oil drips, burning oil smell, and low oil level.
    • Solution: Replace the oil filter housing gasket.
    • Estimated Cost to Fix: $150 - $350+
    • Recalls: None Found
  • VANOS Solenoid Failure
    • Description/Symptoms: Engine hesitates, rough idle, loss of power, and possible check engine light with VANOS-related codes.
    • Solution: Replace the faulty VANOS solenoid(s).
    • Estimated Cost to Fix: $150 - $400+ per solenoid (depending on DIY vs. shop)
    • Recalls: None Found
  • DISA Valve Failure
    • Description/Symptoms: Rattling noise from the engine bay, rough idle, loss of low-end torque, check engine light.
    • Solution: Replace the DISA valve (Dual Intake System Adjustment).
    • Estimated Cost to Fix: $200 - $500+
    • Recalls: None Found

Transmission

6-Speed Automatic (GM 6L45)

  • Slipping or Harsh Shifting
    • Description/Symptoms: The transmission may slip between gears, shift harshly, or hesitate when shifting.
    • Solution: Often requires transmission fluid flush and filter change first. If this doesn’t resolve the issue, valve body replacement or complete transmission rebuild/replacement might be necessary.
    • Estimated Cost to Fix: $150 (fluid/filter) - $3,000+ (rebuild/replace)
    • Recalls: None Found

6-Speed Manual (Getrag GS6-17BG/DG)

  • Clutch Delay Valve (CDV) Issues
    • Description/Symptoms: Some drivers find the clutch engagement to be inconsistent or “mushy” due to the CDV restricting fluid flow.
    • Solution: Remove the CDV. Some people replace it with a modified version.
    • Estimated Cost to Fix: $0 - $50+ (DIY removal, or replacement part)
    • Recalls: None Found

Suspension

  • Control Arm Bushing Failure
    • Description/Symptoms: Clunking noise from the front suspension, especially when going over bumps. Vague steering and uneven tire wear.
    • Solution: Replace the worn control arm bushings or the entire control arm assembly.
    • Estimated Cost to Fix: $200 - $600+ per side (depending on bushing vs. arm replacement and shop rates)
    • Recalls: None Found
  • Strut/Shock Absorber Failure
    • Description/Symptoms: Bouncy ride, poor handling, excessive body roll, and leaking fluid from the strut/shock.
    • Solution: Replace the worn struts/shocks.
    • Estimated Cost to Fix: $400 - $1000+ (for all four, depending on brand and shop rates)
    • Recalls: None Found

Electrical

  • Comfort Access Issues (If Equipped)
    • Description/Symptoms: The Comfort Access system (keyless entry/start) may become unreliable, failing to unlock/lock the doors or start the engine.
    • Solution: Diagnose and replace the faulty door handle sensor, key fob battery, or the Comfort Access module.
    • Estimated Cost to Fix: $100 - $500+ depending on the component.
    • Recalls: None Found
  • Window Regulator Failure
    • Description/Symptoms: Windows fail to go up or down, make grinding noises, or fall into the door.
    • Solution: Replace the faulty window regulator.
    • Estimated Cost to Fix: $200 - $400+ per window
    • Recalls: None Found
  • Alternator Failure
    • Description/Symptoms: Dimming lights, battery warning light, difficulty starting, or complete electrical failure.
    • Solution: Replace the faulty alternator.
    • Estimated Cost to Fix: $400 - $800+
    • Recalls: None Found
  • Battery Drain
    • Description/Symptoms: Battery drains overnight, leaving the car unable to start.
    • Solution: Diagnose parasitic draw using multimeter or diagnostic scan tool to find the electrical circuit where the current is being drawn.
    • Estimated Cost to Fix: $100 - $500+ depending on what is causing the draw.
    • Recalls: None Found

Exterior

  • Door Handle Issues
    • Description/Symptoms: Door handle breaks internally so you can’t open the door.
    • Solution: Replace the faulty door handle.
    • Estimated Cost to Fix: $150-$300+
    • Recalls: None Found

Interior

  • No Issues Found

Summary

The 2006 BMW 330i, while a desirable vehicle, can present owners with a range of common issues, mostly related to the engine and suspension systems. Oil leaks from various engine gaskets are prevalent, and electrical issues such as Comfort Access malfunctions and window regulator failures can be frustrating. Suspension components like control arm bushings are prone to wear and tear. The severity of these issues ranges from minor inconveniences to potentially costly repairs. Potential buyers should be aware of these common problems and budget accordingly for maintenance and repairs.

BMW, 330i
BMW 330i 2006
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