2017 BMW 750i

The 2017 BMW 750i is a luxury sedan that blends performance with opulent comfort. While it boasts advanced technology and a refined driving experience, like any vehicle, it has its share of potential issues. The 2017 750i comes standard with a 4.4-liter twin-turbo V8 engine producing 445 horsepower and 480 lb-ft of torque. While other engine options are available for the 7 Series range in other trims, such as the 740i and 740e, the 750i is exclusively powered by the V8. All configurations of the 2017 750i come with an 8-speed automatic transmission. Owners generally praise the 750i for its powerful engine, smooth ride, and luxurious interior. However, some criticisms include the complexity of the iDrive infotainment system and the potential for expensive repairs.

Engine

4.4L Twin-Turbo V8 (N63)

• Oil Leaks
  • Description/Symptoms: Oil leaks from various locations on the engine, including valve cover gaskets, oil pan gasket, and turbocharger oil lines. May result in a burning oil smell, visible oil drips, and low oil levels.
  • Solution: Replace the leaking gaskets or seals.
  • Estimated Cost to Fix: $500 - $2,000+, depending on the location and complexity of the repair.
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks from various locations, including the coolant expansion tank, radiator hoses, and water pump. May result in low coolant levels and overheating.
  • Solution: Replace the leaking components.
  • Estimated Cost to Fix: $300 - $1,500+, depending on the location and complexity of the repair.
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: Premature failure of the turbochargers. Symptoms include reduced power, excessive oil consumption, and whistling noises from the engine.
  • Solution: Replace the faulty turbochargers.
  • Estimated Cost to Fix: $4,000 - $7,000+
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: Harsh or delayed shifts between gears, particularly when cold. Hesitation or jerking during acceleration.
  • Solution: Programming update of the transmission control module (TCM). May also require valve body replacement or full transmission replacement in severe cases.
  • Estimated Cost to Fix: $300 (software) to $8,000+ (transmission replacement)
  • Recalls: None Found
• Transmission Fluid Leaks
  • Description/Symptoms: Leaks from the transmission pan or seals.
  • Solution: Replacing the transmission pan or seals.
  • Estimated Cost to Fix: $300 - $800
  • Recalls: None Found

Suspension

• Air Suspension Failure
  • Description/Symptoms: Uneven ride height, sagging suspension (especially overnight), “Suspension Malfunction” warning light. Faulty air compressor, air struts, or air lines.
  • Solution: Replace the faulty air suspension components.
  • Estimated Cost to Fix: $1,000 - $4,000+ per corner.
  • Recalls: None Found

Electrical

• iDrive Infotainment System Issues
  • Description/Symptoms: Freezing, lagging, or crashing of the iDrive system. Malfunctioning display screen. Connectivity issues with Bluetooth and USB devices.
  • Solution: Software updates. Replacement of the iDrive control unit in some cases.
  • Estimated Cost to Fix: $0 (software update) to $2,000+ (control unit replacement)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Rapid battery drain, especially when the car is not in use. Can be caused by a faulty battery, a parasitic drain from an electrical component, or a malfunctioning alternator.
  • Solution: Diagnosing and repairing the source of the drain. Replacing the battery or alternator if necessary.
  • Estimated Cost to Fix: $200 - $1,000+ depending on the source of the drain.
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Faulty readings from sensors related to safety systems (ABS, stability control, etc.) can trigger warning lights and disable features.
  • Solution: Replace the faulty sensors.
  • Estimated Cost to Fix: $200-$800+
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: Headlights not leveling properly, or error messages appear on the dashboard.
  • Solution: Replacement of the headlight unit or control module.
  • Estimated Cost to Fix: $1,500+ per headlight.
  • Recalls: None Found

Interior

• Seat Motor Failures
  • Description/Symptoms: The seat will not move to adjust.
  • Solution: The seat motor needs to be replaced.
  • Estimated Cost to Fix: $500-$1000+
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: Sunroof gets stuck or makes noises when opening or closing.
  • Solution: Lubricating or replacing the sunroof tracks or motor.
  • Estimated Cost to Fix: $300 - $1,000
  • Recalls: None Found

Summary

The 2017 BMW 750i, while luxurious and powerful, presents potential owners with several common issues. The engine is prone to oil leaks, coolant leaks, and turbocharger failures, which can be costly to repair. The transmission may experience rough shifting, requiring software updates or even replacement. Suspension problems, particularly with the air suspension, can also lead to expensive repairs. Electrical issues, like iDrive malfunctions and battery drain, are common. While some issues are minor and inexpensive to fix, others can be severe and result in substantial repair bills. Prospective buyers should carefully inspect the vehicle’s service history and consider a pre-purchase inspection by a qualified mechanic to identify potential problems before making a purchase.