2009 BMW 335i

Introduction:

The 2009 BMW 335i is a performance-oriented sedan powered by a twin-turbocharged 3.0-liter inline-six engine paired with a 6-speed manual or 6-speed automatic transmission. The engine delivers 300 horsepower and 300 lb-ft of torque, enabling it to accelerate from 0-60 mph in under 5.5 seconds. The 335i is known for its handling, luxury, and sporty driving dynamics. However, it has also been reported to have some specific issues.

Engine

3.0-liter Twin-Turbocharged Inline-Six

• High-Pressure Fuel Pump Failure:
  • Description/Symptoms: The high-pressure fuel pump can fail, resulting in engine stalling, loss of power, and difficulty starting.
  • Solution: Replace the high-pressure fuel pump.
  • Estimated Cost to Fix: $1,200 - $1,800+
  • Recalls: None Found
• Valve Cover Gasket Leak:
  • Description/Symptoms: The valve cover gasket may leak oil, causing an oil leak in the engine compartment.
  • Solution: Replace the valve cover gasket.
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found
• Turbocharger Wastegate Actuator Failure:
  • Description/Symptoms: The turbocharger wastegate actuator can fail, leading to reduced engine power and increased exhaust gas emissions.
  • Solution: Replace the turbocharger wastegate actuator.
  • Estimated Cost to Fix: $800 - $1,200
  • Recalls: None Found

Transmission

6-Speed Manual

• No Issues Found

6-Speed Automatic

• Mechatronic Unit Failure:
  • Description/Symptoms: The mechatronic unit, which controls the transmission, can fail, resulting in erratic shifting, loss of gears, or complete transmission failure.
  • Solution: Replace the mechatronic unit.
  • Estimated Cost to Fix: $2,000 - $3,000+
  • Recalls: None Found

Suspension

• Control Arm Bushings Wear:
  • Description/Symptoms: The control arm bushings can wear out prematurely, causing a clunking noise when driving over bumps.
  • Solution: Replace the control arm bushings.
  • Estimated Cost to Fix: $500 - $800
  • Recalls: None Found
• Rear Spring Perch Corrosion:
  • Description/Symptoms: The rear spring perches can corrode, leading to suspension damage and a rattling noise.
  • Solution: Replace the rear spring perches.
  • Estimated Cost to Fix: $600 - $1,000
  • Recalls: None Found

Electrical

• Battery Drain:
  • Description/Symptoms: The battery can drain prematurely, especially after the vehicle has been parked for an extended period.
  • Solution: Diagnose and repair the source of the battery drain, which could be caused by parasitic draws or faulty electrical components.
  • Estimated Cost to Fix: Varies depending on the cause
  • Recalls: None Found
• Water Pump Failure:
  • Description/Symptoms: The water pump can fail, causing the engine to overheat.
  • Solution: Replace the water pump.
  • Estimated Cost to Fix: $600 - $1,000
  • Recalls: None Found

Exterior

• Headlight Condensation:
  • Description/Symptoms: Condensation can accumulate inside the headlights, especially after washing the vehicle or driving in heavy rain.
  • Solution: Service the headlights to remove the condensation and prevent further moisture buildup.
  • Estimated Cost to Fix: $100 - $200
  • Recalls: None Found

Interior

• iDrive System Malfunctions:
  • Description/Symptoms: The iDrive infotainment system may malfunction, resulting in screen freezes, unresponsive touch controls, or navigation errors.
  • Solution: Software updates or component replacement may be necessary.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Sunroof Rattle:
  • Description/Symptoms: The sunroof may rattle when driving over bumps or uneven surfaces.
  • Solution: Adjust or lubricate the sunroof seals and mechanisms to eliminate the rattle.
  • Estimated Cost to Fix: $200 - $500
  • Recalls: None Found

Summary:

While the 2009 BMW 335i offers impressive performance and handling, it is not without its issues. Some of the reported problems, such as high-pressure fuel pump failure and mechatronic unit failure, can be costly to repair. However, many of the other issues, like control arm bushing wear and battery drain, are less severe and can be addressed at a more reasonable expense. Overall, the severity and cost of the issues vary, and potential buyers should be aware of these concerns before making a decision.