2018 BMW 650i Gran Coupe

The 2018 BMW 650i Gran Coupe is a luxury four-door coupe that blends performance with elegant styling. This model year offered a single engine option: a 4.4-liter TwinPower Turbo V8 engine that produces 445 horsepower and 480 lb-ft of torque. It was paired with an 8-speed automatic transmission. People generally praise the 650i Gran Coupe for its powerful engine, luxurious interior, and comfortable ride. Common complaints often revolve around higher running costs due to premium fuel requirements and potential maintenance expenses associated with a high-performance luxury vehicle. Some also find the rear headroom limited due to the sloping roofline.

Engine

4.4L TwinPower Turbo V8

• Oil Leaks
  • Description/Symptoms: Oil leaks, often originating from the valve cover gaskets or oil filter housing. Can result in oil spots on the ground and a burning oil smell.
  • Solution: Replace the valve cover gaskets or oil filter housing gasket.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks can occur from various hoses, the water pump, or the coolant expansion tank. Symptoms include low coolant levels, overheating, and coolant puddles under the vehicle.
  • Solution: Identify and replace the leaking component.
  • Estimated Cost to Fix: $200 - $1000+
  • Recalls: None Found

Transmission

8-Speed Automatic Transmission

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported rough or delayed shifting, particularly between certain gears. This can manifest as a noticeable jerk or hesitation during acceleration.
  • Solution: In some cases, a software update can resolve the issue. More severe cases may require valve body replacement or transmission rebuild.
  • Estimated Cost to Fix: $300 (Software Update) - $4000+ (Transmission Rebuild)
  • Recalls: None Found

Suspension

• Air Suspension Issues (if equipped)
  • Description/Symptoms: Models equipped with air suspension can experience issues such as air leaks, leading to the vehicle sitting unevenly or failing to maintain the desired ride height.
  • Solution: Repair or replace the leaking air strut, compressor, or air lines.
  • Estimated Cost to Fix: $800 - $2000+ per strut, depending on the component needing replacement
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Excessive battery drain can occur due to various reasons, including faulty modules, aftermarket accessories, or a failing battery. This can result in difficulty starting the vehicle or a completely dead battery.
  • Solution: Diagnose the source of the drain and repair or replace the faulty component. This may require testing individual circuits and modules.
  • Estimated Cost to Fix: $100 - $500+ (depending on the cause)
  • Recalls: None Found
• iDrive System Malfunctions
  • Description/Symptoms: The iDrive infotainment system can experience various issues, including freezing, crashing, or failure to respond to inputs.
  • Solution: Restarting the iDrive system or performing a software update can sometimes resolve the issue. More severe cases may require replacing the iDrive control unit.
  • Estimated Cost to Fix: $0 (Restart/Software Update) - $1500+ (Replacement)
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: Adaptive headlights can sometimes malfunction, leading to error messages, incorrect aiming, or complete failure.
  • Solution: Replace the faulty headlight unit or associated control module.
  • Estimated Cost to Fix: $1000 - $3000+ per headlight unit
  • Recalls: None Found

Interior

• Seat Motor/Actuator Failure
  • Description/Symptoms: Power seats can experience issues with the motors or actuators that control seat movement, leading to the inability to adjust the seat.
  • Solution: Replace the faulty motor or actuator.
  • Estimated Cost to Fix: $300 - $800+ per motor/actuator
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: Sunroofs can become stuck, fail to open or close properly, or leak.
  • Solution: Diagnose and repair the sunroof mechanism, replace seals, or replace the entire sunroof assembly.
  • Estimated Cost to Fix: $200 - $1500+
  • Recalls: None Found

Summary

The 2018 BMW 650i Gran Coupe, while offering a luxurious and powerful driving experience, can be prone to certain common issues. Engine oil and coolant leaks appear to be prevalent, potentially leading to moderate to high repair costs. Electrical glitches, particularly with the iDrive system and battery drain, can also occur. While some fixes are relatively inexpensive, others can be quite costly, especially those related to the air suspension or transmission. Potential buyers should have a pre-purchase inspection done by a qualified BMW mechanic to identify any existing or potential issues.