2011 BMW 750i

The 2011 BMW 750i is a full-size luxury sedan known for its powerful engine, opulent interior, and advanced technology. The 2011 750i comes standard with a 4.4-liter twin-turbocharged V8 engine producing 400 horsepower and 450 lb-ft of torque. While some appreciate the smooth ride, powerful acceleration, and luxurious appointments, others have noted concerns regarding reliability, high maintenance costs, and complex electronics. A common complaint across the board is the high cost of repair for common failures. The 2011 BMW 750i comes standard with an 8-speed automatic transmission.

Engine

N63B44O0 (4.4L Twin-Turbocharged V8)

• Coolant Leaks
  • Description/Symptoms: Coolant leaks can occur from various locations within the engine, including the coolant transfer pipe, water pump, and radiator hoses. Symptoms include low coolant levels, overheating, and visible coolant puddles.
  • Solution: Replace leaking components.
  • Estimated Cost to Fix: $200 - $1,500+ depending on the location and component needing replacement.
  • Recalls: None Found
• Valve Stem Seal Failure
  • Description/Symptoms: Valve stem seals are known to fail, allowing oil to leak into the combustion chamber. This results in excessive oil consumption and blue smoke from the exhaust.
  • Solution: Replacement of valve stem seals. This is a labor intensive job.
  • Estimated Cost to Fix: $3,000 - $6,000+
  • Recalls: None Found
• Turbocharger Issues
  • Description/Symptoms: The twin-turbochargers can experience failures such as oil leaks, reduced boost pressure, and complete turbocharger failure. Symptoms include loss of power, unusual noises from the engine, and check engine lights.
  • Solution: Repair or replace the faulty turbocharger(s).
  • Estimated Cost to Fix: $2,000 - $4,000+ per turbocharger.
  • Recalls: None Found
• Fuel Injector Failure
  • Description/Symptoms: Fuel injectors can fail or leak, leading to misfires, rough idling, poor fuel economy, and potential catalytic converter damage.
  • Solution: Replace the faulty fuel injector(s).
  • Estimated Cost to Fix: $300 - $800+ per injector, including labor.
  • Recalls: None Found

Transmission

ZF 8HP (8-Speed Automatic)

• Mechatronic Unit Failure
  • Description/Symptoms: The Mechatronic unit (transmission control unit) can fail, leading to erratic shifting, harsh engagement, and transmission malfunction warnings.
  • Solution: Replace or rebuild the Mechatronic unit.
  • Estimated Cost to Fix: $1,500 - $3,500+
  • Recalls: None Found
• Torque Converter Issues
  • Description/Symptoms: Torque converter problems can manifest as shuddering at low speeds, slipping during acceleration, and unusual noises from the transmission.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1,000 - $2,500+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure
  • Description/Symptoms: The air suspension compressor can fail, leading to ride height issues, suspension malfunction warnings, and a rough or uneven ride.
  • Solution: Replace the air suspension compressor.
  • Estimated Cost to Fix: $800 - $1,800+
  • Recalls: None Found
• Air Strut Leaks
  • Description/Symptoms: Air struts can develop leaks, causing the vehicle to sag on one or more corners, ride height malfunction warnings, and reduced ride comfort.
  • Solution: Replace the leaking air strut(s).
  • Estimated Cost to Fix: $800 - $2,000+ per strut.
  • Recalls: None Found

Electrical

• iDrive System Malfunctions
  • Description/Symptoms: The iDrive system, which controls many of the vehicle’s functions, can experience software glitches, screen failures, and unresponsive controls.
  • Solution: Software updates, component replacement.
  • Estimated Cost to Fix: $200 - $1,500+ depending on the severity of the issue.
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Excessive battery drain can lead to starting problems and electrical malfunctions. This can be caused by faulty modules or parasitic draws.
  • Solution: Identify and repair the source of the battery drain.
  • Estimated Cost to Fix: $100 - $500+ depending on the complexity of the issue.
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: The adaptive headlights, which swivel to illuminate the road, can experience malfunctions. This can result in error messages on the dashboard, and improper headlight aiming.
  • Solution: Diagnose the cause of the malfunction, then replace the headlight assembly.
  • Estimated Cost to Fix: $1,000+
  • Recalls: None Found

Interior

• Seat Motor Failure
  • Description/Symptoms: The seat motors can fail, preventing adjustment of the seats.
  • Solution: Replace faulty seat motor.
  • Estimated Cost to Fix: $300 - $800+ per motor.
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: The sunroof mechanism can malfunction, causing the sunroof to jam or fail to open or close properly.
  • Solution: Repair or replace the sunroof mechanism.
  • Estimated Cost to Fix: $400 - $1,200+
  • Recalls: None Found

Summary

The 2011 BMW 750i, while offering a luxurious experience, is prone to several issues that can lead to costly repairs. Engine problems, particularly those related to the N63 engine and its turbochargers, are significant concerns. Suspension issues with the air suspension system and electrical problems with the iDrive system further contribute to the vehicle’s reputation for high maintenance costs. The overall severity of these issues ranges from moderate to severe, with repair costs often exceeding several thousand dollars. Potential buyers should carefully consider these factors before purchasing a 2011 BMW 750i and budget accordingly for potential repairs.