2016 BMW 640i xDrive

Here’s a breakdown of common issues and complaints for the 2016 BMW 640i xDrive, organized as requested.

The 2016 BMW 640i xDrive is a luxurious grand tourer known for its stylish design, comfortable ride, and responsive handling. The 640i xDrive comes equipped with a 3.0-liter turbocharged inline-6 engine, producing 315 horsepower and 330 lb-ft of torque. The vehicle is paired with an 8-speed automatic transmission. Other engine options for the 2016 6 Series include a 4.4-liter twin-turbo V8 in the 650i. The 640i xDrive is generally appreciated for its refined driving experience and upscale interior, but some owners have reported issues with electrical components, oil leaks, and drivetrain malfunctions.

Engine

3.0L Turbocharged Inline-6 (N55)

• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak originating from the oil filter housing, often dripping onto the engine and potentially causing a burning smell. Low oil level may be indicated.
  • Solution: Replacement of the oil filter housing gasket. Thorough cleaning of the surrounding area to remove oil residue.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leak from the valve cover, potentially leading to a burning smell and oil accumulation on the engine.
  • Solution: Replace valve cover gasket.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found
• VANOS Solenoid Failure
  • Description/Symptoms: Rough idling, decreased engine performance, and potential check engine light activation. Diagnostic codes related to VANOS (Variable Valve Timing).
  • Solution: Replacement of the faulty VANOS solenoid(s).
  • Estimated Cost to Fix: $200 - $500+ (per solenoid)
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Mechatronic Unit Issues
  • Description/Symptoms: Harsh shifting, delayed gear engagement, slipping between gears, and potential transmission malfunction warnings.
  • Solution: Replacement or rebuild of the Mechatronic unit (valve body). In some cases, reprogramming the transmission control module (TCM) may help.
  • Estimated Cost to Fix: $1,500 - $4,000+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering or vibrations, particularly during acceleration or when the transmission is under load. Reduced fuel economy and potential transmission slippage.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $1,000 - $3,000+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: The vehicle sits lower than normal, especially on one side. The air suspension warning light may illuminate. The compressor may run excessively or not at all.
  • Solution: Replacement of the air suspension compressor. Diagnose and repair any air leaks in the system.
  • Estimated Cost to Fix: $800 - $1,800+
  • Recalls: None Found

Electrical

• iDrive System Malfunctions
  • Description/Symptoms: Freezing, unresponsive touchscreen, navigation errors, and Bluetooth connectivity issues.
  • Solution: Software updates, replacement of the iDrive control unit (CIC/NBT).
  • Estimated Cost to Fix: $200 - $1,500+
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Dead battery, difficulty starting the car, and warning messages related to low voltage.
  • Solution: Diagnosis and repair of parasitic drains (e.g., faulty modules, wiring issues). Replacement of the battery.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found
• Faulty Comfort Access System
  • Description/Symptoms: Inability to unlock or start the car using the Comfort Access feature.
  • Solution: Replacement of the door handle sensors, antenna amplifier, or CAS module.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: Headlights not leveling properly, error messages related to adaptive headlights, and reduced visibility at night.
  • Solution: Replacement of the headlight control module or headlight assembly. Calibration of the headlight system.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Interior

• Seat Occupancy Sensor Failure
  • Description/Symptoms: Airbag warning light illuminated. Incorrect passenger airbag deployment.
  • Solution: Replacement of the seat occupancy sensor.
  • Estimated Cost to Fix: $500 - $1,200+
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: Sunroof not closing properly, making grinding noises, or leaking water.
  • Solution: Sunroof track repair, replacement of the sunroof motor, or resealing the sunroof assembly.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found

Summary

The 2016 BMW 640i xDrive, while a desirable vehicle, can present owners with several potential issues. Engine oil leaks and electrical malfunctions are relatively common and can lead to moderate repair costs. Transmission problems, particularly with the Mechatronic unit, can be more severe and expensive to address. Suspension issues, if equipped with air suspension, can also add to the ownership costs. Overall, prospective buyers should be aware of these potential problems and factor them into their purchasing decision, as well as budget accordingly for potential maintenance and repairs.