2018 BMW 540i

The 2018 BMW 540i is a midsize luxury sedan that packs a punch with its standard 3.0-liter TwinPower Turbo inline-6 engine that unleashes 335 horsepower and 330 lb-ft of torque. This power is paired with an 8-speed Steptronic Sport automatic transmission.

The 540i is a joy to drive, with precise handling, ample power for quick acceleration, and a comfortable and well-equipped interior. However, like any vehicle, it is not without its issues.

Engine

• 3.0L TwinPower Turbo Inline-6
  • Oil Leak: Oil may leak from the oil filter housing or gasket. Symptoms include a burning oil smell and low oil levels. Solution: Replace the oil filter housing or gasket. Estimated Cost to Fix: $200 - $400.
  • Timing Chain Rattle: The timing chain may rattle on cold startups. Solution: Replace the timing chain and tensioner. Estimated Cost to Fix: $1,000 - $2,000.
• B58 Engine Recall: Recall number 23V708 relates to a potential issue with the engine control module software.
• N63 Engine Recall: Recall number 19E012 relates to a potential issue with the engine coolant pump.

Transmission

• 8-Speed Steptronic Sport Automatic
  • Transmission Jerking: The transmission may jerk or hesitate when shifting gears. Solution: Update the transmission software or replace the transmission control module. Estimated Cost to Fix: $1,000 - $2,000.

Suspension

• No Issues Found

Electrical

• Battery Drain: The battery may drain prematurely due to a faulty module or electrical component. Solution: Identify and repair or replace the faulty component. Estimated Cost to Fix: $500 - $1,000.
• Infotainment System Malfunction: The infotainment system may freeze, crash, or become unresponsive. Solution: Reset the infotainment system or update the software. Estimated Cost to Fix: Free or up to $500 for software updates.

Exterior

• No Issues Found

Interior

• Door Lock Malfunction: The door locks may fail to operate properly or may lock or unlock at random times. Solution: Replace the door lock actuators. Estimated Cost to Fix: $200 - $400 per door.
• Sunroof Rattle: The sunroof may rattle or squeak when open or closed. Solution: Adjust or replace the sunroof seals or tracks. Estimated Cost to Fix: $200 - $500.
• Heated/Cooled Seat Malfunction: The heated or cooled seats may not function properly. Solution: Replace the seat heating or cooling element. Estimated Cost to Fix: $500 - $1,000 per seat.

Summary

The 2018 BMW 540i is a well-rounded luxury sedan with impressive performance and features. However, it is not immune to certain issues. Some of the issues, such as the oil leaks and timing chain rattle, can be costly to repair. Others, like the infotainment system malfunctions and door lock issues, are less severe and can be fixed at a more reasonable cost. Overall, it is important for potential buyers to be aware of these potential problems before making a purchase decision.