2017 BMW 330i

The 2017 BMW 330i is a popular luxury sport sedan known for its engaging driving dynamics and premium features. The 330i comes standard with a 2.0-liter turbocharged inline-4 engine producing 248 horsepower and 258 lb-ft of torque. A 6-speed manual or an 8-speed automatic transmission was available. Some owners praise its precise handling, comfortable interior, and fuel efficiency. Common complaints revolve around reliability issues, particularly related to the engine, electrical systems, and some interior components.

Engine

2.0L Turbocharged Inline-4 (B48)

• Oil Leaks
  • Description/Symptoms: Oil leaks from the valve cover gasket or oil filter housing are reported. Symptoms include visible oil drips, burning oil smell, and low oil levels.
  • Solution: Replace the valve cover gasket or oil filter housing gasket.
  • Estimated Cost to Fix: $200 - $600+
• Coolant Leaks
  • Description/Symptoms: Coolant leaks, particularly from the coolant expansion tank or various hoses and connections. Symptoms include low coolant levels, overheating, and visible coolant leaks.
  • Solution: Replace the coolant expansion tank or leaking hoses/connections.
  • Estimated Cost to Fix: $150 - $400+

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners report experiencing rough or delayed shifts, particularly when shifting between lower gears. This can be more noticeable during cold starts or under light acceleration.
  • Solution: A software update from BMW may help, but in some cases, a transmission flush or replacement of solenoids may be necessary.
  • Estimated Cost to Fix: $150 (software update) - $800+ (transmission flush/solenoid replacement)

Suspension

No Issues Found

Electrical

• Battery Drain
  • Description/Symptoms: The battery draining faster than normal
  • Solution: Replace the battery
  • Estimated Cost to Fix: $200-400+
• iDrive System Malfunctions
  • Description/Symptoms: Issues with the iDrive infotainment system, including freezing, crashing, or slow response times.
  • Solution: Software update or replacement of the iDrive module (uncommon).
  • Estimated Cost to Fix: $150 (software update) - $1000+ (module replacement)
• Sensor Failures (Parking Sensors, etc.)
  • Description/Symptoms: Failure of parking sensors, causing incorrect readings or no readings at all.
  • Solution: Replacement of faulty sensor(s).
  • Estimated Cost to Fix: $200 - $400+ per sensor
• Door Lock Actuators
  • Description/Symptoms: Door lock actuators failing to lock or unlock the doors properly.
  • Solution: Replacing the faulty actuator
  • Estimated Cost to Fix: $250 - $500+

Exterior

• Headlight Issues (LED/Xenon)
  • Description/Symptoms: LED or Xenon headlights failing prematurely or flickering.
  • Solution: Replacement of the bulb or headlight assembly.
  • Estimated Cost to Fix: $200 - $1000+ (depending on type and assembly)
• Power Folding Mirror Problems
  • Description/Symptoms: Power folding mirrors failing to fold or unfold correctly, or making unusual noises.
  • Solution: Repair or replacement of the folding mechanism or entire mirror assembly.
  • Estimated Cost to Fix: $300 - $800+

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof failing to open or close properly, or making excessive noise.
  • Solution: Repair of the sunroof mechanism or motor.
  • Estimated Cost to Fix: $300 - $800+
• Seat Motor Failures
  • Description/Symptoms: Power seat motors failing, preventing seat adjustment.
  • Solution: Replacement of the faulty seat motor(s).
  • Estimated Cost to Fix: $300 - $700+ per motor

Summary

The 2017 BMW 330i, while offering a sporty and luxurious driving experience, is prone to certain issues. Engine oil and coolant leaks, as well as transmission problems, are the most significant mechanical concerns. Electrical issues, such as iDrive malfunctions and sensor failures, are also relatively common. Interior and exterior problems, while less frequent, can also be costly to repair. While these issues may not affect every 2017 330i, potential buyers should be aware of these common problems and factor in potential repair costs. The severity and cost of these issues can range from minor inconvenience to major repairs, impacting the overall ownership experience.