2018 BMW 640i xDrive Gran Turismo

The 2018 BMW 640i xDrive Gran Turismo is a luxury hatchback known for its spacious interior, comfortable ride, and powerful engine. The 640i xDrive Gran Turismo is equipped with a 3.0-liter inline-6 turbocharged engine that produces 335 horsepower and 332 lb-ft of torque. Other engine options for the 6 Series Gran Turismo may include a 2.0-liter turbocharged inline-4 (found in the 630i) and other variations of inline 6 engines that may have different horsepower or torque outputs. The standard transmission is an 8-speed automatic. Owners often praise the car’s refined driving experience, comfortable seating, and large cargo area. However, some common criticisms include the car’s large size, which can make it challenging to maneuver in tight spaces, and the higher price point compared to other vehicles in its class.

Engine

B58 3.0L Turbocharged Inline-6

• Oil Leaks
  • Description/Symptoms: Oil leaks can develop from the valve cover gasket, oil filter housing gasket, or the oil pan gasket. Symptoms include visible oil leaks under the car, a burning oil smell, and low oil levels.
  • Solution: Replacing the affected gasket(s).
  • Estimated Cost to Fix: $200 - $1000+ depending on the location and complexity of the leak.
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks may occur from the water pump, thermostat housing, or radiator hoses. Symptoms include low coolant levels, overheating, and visible coolant leaks.
  • Solution: Replacing the faulty component and topping off the coolant.
  • Estimated Cost to Fix: $300 - $1200+ depending on the affected part.
  • Recalls: None Found

Transmission

ZF 8HP 8-Speed Automatic Transmission

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported experiencing rough or delayed shifts, particularly between certain gears. This can be more noticeable when the transmission is cold. Hesitation upon acceleration is also a symptom.
  • Solution: A software update from BMW may resolve some of these issues. In more severe cases, a transmission flush or replacement of the valve body might be necessary.
  • Estimated Cost to Fix: $150 (software update) to $2000+ (valve body replacement).
  • Recalls: None Found
• Mechatronic Unit Failure
  • Description/Symptoms: Failure of the Mechatronic unit can lead to the transmission going into limp mode, harsh shifting, or a complete loss of gear engagement.
  • Solution: Replacement of the Mechatronic unit.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found

Suspension

• Air Suspension Issues (If Equipped)
  • Description/Symptoms: The air suspension, if equipped, can experience leaks in the air springs or failures of the air compressor. This can lead to a sagging ride height, uneven ride, or a suspension malfunction warning light.
  • Solution: Replacing the faulty air spring(s) or air compressor.
  • Estimated Cost to Fix: $800 - $2000+ per air spring or compressor.
  • Recalls: None Found

Electrical

• iDrive System Malfunctions
  • Description/Symptoms: Issues with the iDrive infotainment system can include screen freezing, slow response times, or complete system failure.
  • Solution: Restarting the system, software updates, or replacement of the iDrive control unit.
  • Estimated Cost to Fix: $0 (restart) to $1500+ (control unit replacement).
  • Recalls: None Found
• Sensor Failures
  • Description/Symptoms: Failure of various sensors (e.g., parking sensors, tire pressure sensors) can trigger warning lights and/or malfunctions of related systems.
  • Solution: Replacing the faulty sensor.
  • Estimated Cost to Fix: $100 - $500+ per sensor.
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: Malfunctions of the adaptive headlights can cause them to not adjust properly or to display error messages.
  • Solution: Diagnosis and repair or replacement of the headlight control module or the headlight assembly.
  • Estimated Cost to Fix: $500 - $2000+
  • Recalls: None Found

Interior

• Power Seat Malfunctions
  • Description/Symptoms: Issues with the power seats can include failure to adjust in one or more directions.
  • Solution: Repair or replacement of the seat motor or switch.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Summary

The 2018 BMW 640i xDrive Gran Turismo, while offering a luxurious and enjoyable driving experience, can be susceptible to certain issues. Engine oil and coolant leaks, transmission problems, and electrical glitches seem to be more common than other issues. The cost of repair can vary significantly depending on the complexity and location of the problem, potentially ranging from a few hundred dollars for minor sensor replacements to several thousand dollars for air suspension or transmission repairs. Considering these potential issues and associated costs is recommended when purchasing a used 2018 BMW 640i xDrive Gran Turismo.