2017 BMW 750Li

The 2017 BMW 750Li

The 2017 BMW 750Li is a full-size luxury sedan that offers a combination of performance, refinement, and technology. It is powered by a 4.4-liter twin-turbocharged V8 engine that produces 445 horsepower and 480 lb-ft of torque, paired with an 8-speed automatic transmission. The 750Li comes standard with a long list of features, including a panoramic moonroof, leather upholstery, heated and ventilated front seats, a 10.2-inch touchscreen infotainment system, and a suite of driver-assistance technologies.

While the 750Li is a highly capable and luxurious vehicle, it is not without its problems. Here is a comprehensive list of the specific issues people are having with the vehicle, separated into categories of the major components:

Engine

• N63B44 4.4L Twin-Turbocharged V8

  • VANOS Solenoid Failure
    • Description/Symptoms: The VANOS solenoids control the timing of the intake and exhaust valves. When they fail, it can cause the engine to run rough, lose power, or stall.
    • Solution: Replace the faulty VANOS solenoid.
    • Estimated Cost to Fix: $500 - $1,000+
  • Timing Chain Failure
    • Description/Symptoms: The timing chain synchronizes the rotation of the crankshaft and camshafts. If it fails, it can cause the engine to lose power or even catastrophically fail.
    • Solution: Replace the timing chain and related components.
    • Estimated Cost to Fix: $2,000 - $4,000+
  • Turbocharger Failure
    • Description/Symptoms: The turbochargers boost the engine’s power output. If they fail, it can cause a loss of power or increased fuel consumption.
    • Solution: Replace the faulty turbocharger.
    • Estimated Cost to Fix: $1,500 - $3,000+

Transmission

• 8-Speed ZF 8HP75 Automatic Transmission

  • Mechatronic Unit Failure
    • Description/Symptoms: The mechatronic unit controls the transmission’s shifting. When it fails, it can cause the transmission to slip, jerk, or become stuck in gear.
    • Solution: Replace the mechatronic unit.
    • Estimated Cost to Fix: $2,000 - $3,000+
  • Torque Converter Failure
    • Description/Symptoms: The torque converter transfers power from the engine to the transmission. When it fails, it can cause the transmission to slip or shudder.
    • Solution: Replace the torque converter.
    • Estimated Cost to Fix: $1,000 - $2,000+

Suspension

• Air Suspension System Malfunction
  • Description/Symptoms: The air suspension system provides a smooth and comfortable ride. If it malfunctions, it can cause the vehicle to ride too low or too high, or it may become unresponsive to adjustments.
  • Solution: Repair or replace the faulty air suspension components.
  • Estimated Cost to Fix: $500 - $2,000+

Electrical

• Battery Discharge
  • Description/Symptoms: The battery may discharge prematurely, causing the vehicle to fail to start.
  • Solution: Replace the battery or repair the electrical system.
  • Estimated Cost to Fix: $200 - $500+
• Electrical Module Failures
  • Description/Symptoms: Various electrical modules, such as the body control module or the infotainment system, may fail, causing a range of issues, including loss of functionality, warning lights, or even a no-start condition.
  • Solution: Replace the faulty electrical module.
  • Estimated Cost to Fix: $500 - $2,000+

Exterior

• Headlight Condensation
  • Description/Symptoms: Moisture may accumulate inside the headlight assemblies, causing fogging or condensation.
  • Solution: Replace the headlight assemblies or reseal them.
  • Estimated Cost to Fix: $500 - $1,000+

Interior

• Sunroof Rattle
  • Description/Symptoms: The panoramic sunroof may rattle or squeak when opened or closed.
  • Solution: Tighten or replace the sunroof guides or seals.
  • Estimated Cost to Fix: $200 - $500+
• iDrive System Lag or Malfunction
  • Description/Symptoms: The iDrive infotainment system may experience lag, freezing, or other malfunctions.
  • Solution: Update the software or replace the faulty iDrive components.
  • Estimated Cost to Fix: $500 - $2,000+

Summary

The 2017 BMW 750Li is a luxurious and high-performance sedan, but it is not without its problems. Some of the issues, such as engine and transmission failures, can be costly to repair. However, many of the other issues are relatively minor and can be resolved at a more reasonable cost. Overall, the 750Li is still a desirable vehicle for those who prioritize luxury, performance, and technology.