2009 BMW 335i

Here’s a breakdown of common issues and complaints for the 2009 BMW 335i, categorized as requested.

The 2009 BMW 335i is a popular choice among driving enthusiasts for its sporty handling and powerful engine. The primary engine option for this model year is the 3.0-liter twin-turbocharged inline-six (N54) producing 300 horsepower and 300 lb-ft of torque. A naturally aspirated 3.0-liter inline-six (N52) was also available in the 328i model, but we are focusing on the 335i here. Transmission options included a 6-speed manual and a 6-speed automatic. Owners often praise the 335i’s performance and engaging driving experience. Common complaints center around the car’s reliability, particularly with the N54 engine, and the high cost of maintenance and repairs.

Engine

N54 3.0L Twin-Turbocharged Inline-Six

• High-Pressure Fuel Pump (HPFP) Failure
  • Description/Symptoms: Extended cranking times, long starts, rough idling, sudden loss of power, or engine stalling. Can trigger a check engine light.
  • Solution: Replacement of the High-Pressure Fuel Pump. Early versions of the HPFP were prone to failure.
  • Estimated Cost to Fix: $800 - $1200+
  • Recalls:
    • Campaign No. 12V-492: Certain 2007-2010 Model Year BMW Vehicles Fuel Pump May Fail
    • Campaign No. 10V-041: Certain 2007-2010 Model Year BMW Vehicles Fuel Pump May Fail
• Turbocharger Wastegate Rattle
  • Description/Symptoms: A rattling or buzzing noise coming from the engine bay, especially during acceleration or deceleration. This is caused by worn wastegate bushings within the turbochargers.
  • Solution: Replacing the turbochargers or rebuilding them with upgraded wastegate components. Some aftermarket solutions exist to address the rattle without full turbo replacement.
  • Estimated Cost to Fix: $2500 - $4000+ (Turbocharger replacement)
  • Recalls: None Found
• Fuel Injector Failure
  • Description/Symptoms: Rough idling, misfires, poor fuel economy, and a check engine light. Faulty fuel injectors can cause uneven fuel delivery.
  • Solution: Replacement of faulty fuel injectors. It is often recommended to replace all injectors at the same time, especially if they are the same age.
  • Estimated Cost to Fix: $1200 - $2000+
  • Recalls: None Found
• Oil Leaks (Valve Cover Gasket, Oil Filter Housing Gasket)
  • Description/Symptoms: Visible oil leaks on the engine, burning oil smell, and low oil level. Valve cover gasket leaks are common due to the engine’s heat cycles. The oil filter housing gasket also tends to harden and leak over time.
  • Solution: Replacement of the valve cover gasket and/or oil filter housing gasket.
  • Estimated Cost to Fix: Valve Cover Gasket: $400 - $800+, Oil Filter Housing Gasket: $300 - $600+
  • Recalls: None Found
• Water Pump and Thermostat Failure
  • Description/Symptoms: Overheating, coolant leaks, and potential engine damage. The electric water pump is a known weak point.
  • Solution: Replacement of the water pump and thermostat. It’s often recommended to replace both simultaneously.
  • Estimated Cost to Fix: $800 - $1500+
  • Recalls: None Found

Transmission

6-Speed Automatic Transmission (GA6HP19Z)

• Mechatronic Sleeve Leak
  • Description/Symptoms: Transmission fluid leak, rough shifting, or transmission slipping.
  • Solution: Replacement of the mechatronic sleeve and fluid service.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

6-Speed Manual Transmission (GS6-53BZ)

• No Issues Found

Suspension

• Cracked Front Control Arm Bushings
  • Description/Symptoms: Clunking noise from the front suspension, especially over bumps. Reduced steering precision and uneven tire wear.
  • Solution: Replacement of the front control arm bushings.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Electrical

• Battery Drain Issues
  • Description/Symptoms: Dead battery, difficulty starting the car, and warning lights. Can be caused by a faulty comfort access system, parasitic draws, or a failing battery.
  • Solution: Diagnosis of the parasitic draw, replacement of the battery, or repair of the comfort access system.
  • Estimated Cost to Fix: $150 - $300+ (Battery), $200 - $1000+ (Parasitic Draw Diagnosis and Repair)
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Failed Window Regulators
  • Description/Symptoms: Window not working, grinding or crunching noises when operating the window, or the window falling into the door.
  • Solution: Replacement of the window regulator.
  • Estimated Cost to Fix: $300 - $500+ per window
  • Recalls: None Found

Summary

The 2009 BMW 335i is a performance-oriented vehicle that, unfortunately, has several common reliability issues. The N54 engine, while powerful, is prone to problems such as HPFP failure, turbo wastegate rattle, and oil leaks. Transmission issues are less frequent but can still occur. Suspension and electrical problems are also present. The cost of repairs can be significant, making it crucial to thoroughly inspect a potential purchase and factor in potential maintenance expenses. The severity of issues ranges from minor inconveniences to major mechanical failures. Addressing these issues promptly can help maintain the vehicle’s performance and prevent further damage.