2012 BMW 750Li

The 2012 BMW 750Li is a luxury sedan known for its powerful performance, comfortable ride, and sophisticated features. The 750Li came equipped with a 4.4-liter twin-turbocharged V8 engine producing 400 horsepower and 450 lb-ft of torque. A 8-speed automatic transmission was the only transmission available. Owners often praise the car’s smooth ride, spacious interior, and advanced technology. However, potential drawbacks include high maintenance costs and the complexity of the electronics, which can lead to reliability issues.

Engine

4.4L Twin-Turbo V8 (N63)

• Oil Leaks from Valve Stem Seals
  • Description/Symptoms: Excessive oil consumption, blue smoke from exhaust, especially upon startup after sitting.
  • Solution: Replacement of the valve stem seals. Improved seals have been released.
  • Estimated Cost to Fix: $4,000 - $8,000+
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant level decreasing, overheating, visible coolant leaks near the turbochargers or coolant lines.
  • Solution: Replacing leaking coolant hoses, turbocharger coolant lines, and potentially the turbocharger if corrosion has occurred.
  • Estimated Cost to Fix: $500 - $3,000+
  • Recalls: None Found
• Fuel Injector Failure
  • Description/Symptoms: Rough idle, misfires, check engine light. Injectors can leak or fail completely.
  • Solution: Replacement of faulty fuel injectors.
  • Estimated Cost to Fix: $300 - $800+ per injector.
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Valve Body Issues
  • Description/Symptoms: Harsh shifting, delayed engagement, slipping between gears.
  • Solution: Replacement or rebuild of the valve body. Mechatronic unit replacement.
  • Estimated Cost to Fix: $1,500 - $4,000+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering, especially at low speeds, transmission slippage.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $1,500 - $3,500+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure
  • Description/Symptoms: Vehicle sagging, especially overnight, air suspension malfunction warning.
  • Solution: Replacement of the air suspension compressor.
  • Estimated Cost to Fix: $800 - $2,000+
  • Recalls: None Found
• Air Strut Leaks
  • Description/Symptoms: Vehicle sagging, uneven ride height, hissing sound from the air struts.
  • Solution: Replacement of the leaking air strut.
  • Estimated Cost to Fix: $1,000 - $2,500+ per strut.
  • Recalls: None Found

Electrical

• iDrive Malfunctions
  • Description/Symptoms: System freezes, display issues, inability to control vehicle functions.
  • Solution: Software update or replacement of the iDrive control module.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Dead battery, difficulty starting, electrical components malfunctioning.
  • Solution: Diagnosis and repair of parasitic drain, possible battery replacement.
  • Estimated Cost to Fix: $150 - $1,000+
  • Recalls: None Found
• Comfort Access Issues
  • Description/Symptoms: Key fob not recognized, difficulty locking/unlocking doors, push-button start malfunctions.
  • Solution: Replacing comfort access module or antenna.
  • Estimated Cost to Fix: $300-$1000+
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: Headlights not leveling properly, error messages, headlights pointing in the wrong direction.
  • Solution: Replacement of the headlight control module or the entire headlight assembly.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Interior

• Seat Motor Failure
  • Description/Symptoms: Seats not adjusting properly, clicking noises from the seat motor.
  • Solution: Replacement of the faulty seat motor.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: Sunroof getting stuck, making excessive noise, or leaking.
  • Solution: Repair or replacement of the sunroof motor, tracks, or seals.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found

Summary

The 2012 BMW 750Li, while a luxurious and powerful vehicle, presents owners with a range of potential issues. Engine problems, particularly oil leaks and coolant leaks, are common and can be costly to repair. Transmission issues, especially with the valve body, are also prevalent. Suspension and electrical problems can add to the overall maintenance burden. The severity and cost of these issues can range from a few hundred dollars for minor repairs to several thousand for more complex problems. Potential buyers should be aware of these common issues and factor them into their purchasing decision and budget.