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2017 BMW 750Li xDrive

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By Research the Car 5 min read

Here’s a comprehensive breakdown of common issues and complaints reported by owners of the 2017 BMW 750Li xDrive, categorized by major components. This vehicle, part of the G11/G12 generation, is known for its luxurious features, powerful performance, and advanced technology. The 2017 750Li xDrive is equipped with a 4.4L Twin Turbo V8 engine producing 445 horsepower and 480 lb-ft of torque. It is mated to an 8-speed automatic transmission. Owners generally praise the car for its comfortable ride, spacious interior, and abundance of technology, but some dislike the complex electronics and potential for costly repairs, as well as the unintuitive I-drive System. Other available engine options for the 2017 7 Series include a 3.0L inline-6 turbo, a 2.0L inline-4 turbo (for the 730i/Li), and a plug-in hybrid variant. While all 7 series have the same 8-speed automatic transmission, the issues can differ slightly.

Engine

N63 4.4L Twin Turbo V8

  • Oil Leaks
    • Description/Symptoms: Oil leaks are a common issue. Leak points may include valve cover gaskets, oil pan gasket, turbocharger oil lines, or the rear main seal. Symptoms include visible oil leaks under the car, burning oil smell, and low oil level warning light.
    • Solution: Replace the leaking gaskets or seals. Address turbocharger oil line leaks by replacing the affected lines.
    • Estimated Cost to Fix: $200 - $1500+ depending on the leak location and severity.
    • Recalls: None Found
  • Coolant Leaks
    • Description/Symptoms: Coolant leaks can occur from various points, including the coolant expansion tank, radiator hoses, or the water pump. Symptoms include low coolant level warning, overheating, and visible coolant leaks.
    • Solution: Replace the leaking components, such as the expansion tank, hoses, or water pump.
    • Estimated Cost to Fix: $150 - $1000+ depending on the component and labor.
    • Recalls: None Found
  • Turbocharger Issues
    • Description/Symptoms: Turbocharger failure or issues such as wastegate actuator problems can occur. Symptoms include loss of power, unusual noises (whining or whistling), and check engine light.
    • Solution: Diagnose the specific turbocharger issue and replace or repair the affected components. This could involve replacing the turbocharger assembly, wastegate actuator, or vacuum lines.
    • Estimated Cost to Fix: $1000 - $5000+ depending on the extent of the damage.
    • Recalls: None Found

Transmission

ZF 8HP 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: Perform a transmission fluid flush and filter replacement. If the issue persists, further diagnostics and potential valve body replacement may be required.
    • Estimated Cost to Fix: $300 - $2000+ depending on the severity and required repairs.
    • Recalls: None Found
  • Mechatronic Unit Issues
    • Description/Symptoms: The Mechatronic unit, which controls the transmission’s shifting, can develop issues. Symptoms may include erratic shifting, failure to shift, or transmission malfunctions.
    • Solution: Replace or repair the Mechatronic unit. This often involves reprogramming the transmission control module (TCM).
    • Estimated Cost to Fix: $1500 - $4000+
    • Recalls: None Found

Suspension

  • Air Suspension Problems
    • Description/Symptoms: The air suspension system is prone to issues such as air leaks in the air springs (bags) or malfunctions of the air compressor. Symptoms include uneven ride height, sagging, suspension malfunction warnings, and noisy compressor operation.
    • Solution: Replace the leaking air springs, repair or replace the air compressor, and check for leaks in the air lines.
    • Estimated Cost to Fix: $500 - $2500+ per air spring, $500 - $1500+ for the compressor.
    • Recalls: None Found
  • Control Arm Bushing Failure
    • Description/Symptoms: The control arm bushings can wear out, leading to vibrations, clunking noises over bumps, and imprecise handling.
    • Solution: Replace the worn control arm bushings or the entire control arm assembly.
    • Estimated Cost to Fix: $300 - $1000+ per control arm.
    • Recalls: None Found

Electrical

  • iDrive System Malfunctions
    • Description/Symptoms: The iDrive infotainment system can experience glitches, freezing, or complete failure.
    • Solution: Software updates may resolve some issues. In more severe cases, the iDrive control unit may need to be replaced.
    • Estimated Cost to Fix: $100 - $1500+
    • Recalls: None Found
  • Sensor Failures (Parking Sensors, etc.)
    • Description/Symptoms: Various sensors can fail, including parking sensors, blind spot monitoring sensors, and other driver-assistance system sensors. Symptoms include error messages, non-functioning features, or erratic behavior.
    • Solution: Diagnose the faulty sensor and replace it.
    • Estimated Cost to Fix: $100 - $500+ per sensor.
    • Recalls: None Found
  • Battery Drain Issues
    • Description/Symptoms: Excessive battery drain can occur, leading to difficulty starting the car or a completely dead battery. This can be caused by a faulty module not going to sleep or an aging battery.
    • Solution: Diagnose the source of the battery drain, repair the faulty module, and replace the battery if necessary.
    • Estimated Cost to Fix: $100 - $500+ depending on the cause.
    • Recalls: None Found

Exterior

  • Adaptive Headlight Malfunctions
    • Description/Symptoms: The adaptive headlights can sometimes malfunction, failing to adjust properly or displaying error messages.
    • Solution: Diagnose the headlight control module or the headlight assembly itself. Replacement or reprogramming may be necessary.
    • Estimated Cost to Fix: $500 - $2000+ per headlight.
    • Recalls: None Found

Interior

  • Seat Motor Issues
    • Description/Symptoms: The electric seat motors can fail, resulting in the inability to adjust the seat position.
    • Solution: Replace the faulty seat motor or the entire seat assembly, depending on the issue.
    • Estimated Cost to Fix: $200 - $1000+
    • Recalls: None Found
  • Sunroof Problems
    • Description/Symptoms: The sunroof mechanism can experience issues such as getting stuck, making excessive noise, or leaking.
    • Solution: Lubricate the sunroof tracks, repair or replace the sunroof motor, or reseal the sunroof assembly.
    • Estimated Cost to Fix: $100 - $1000+
    • Recalls: None Found

Summary

The 2017 BMW 750Li xDrive, while offering a luxurious and powerful driving experience, is prone to several issues that can result in costly repairs. Engine oil and coolant leaks, turbocharger problems, and air suspension malfunctions are among the most frequently reported problems. Electrical gremlins with the iDrive system and other sensors can also be a source of frustration. The severity of these issues ranges from minor inconveniences to major mechanical failures, and repair costs can vary significantly depending on the specific problem. Potential buyers should be aware of these potential issues and factor them into their purchasing decision.

BMW, 750Li xDrive
BMW 750Li xDrive 2017
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