2015 BMW 740Li xDrive

The 2015 BMW 740Li xDrive is a luxury sedan known for its smooth ride, spacious interior, and advanced technology features. The 740Li xDrive specifically comes with a 3.0L turbocharged inline-6 engine producing 315 horsepower and 330 lb-ft of torque, coupled with an 8-speed automatic transmission. Other engine options available for the 2015 7 Series include a 4.4L turbocharged V8 in the 750Li xDrive and a 6.0L V12 in the 760Li. Owners appreciate the 740Li xDrive for its comfortable driving experience, powerful engine, and luxurious features. Common complaints revolve around the complexity of the iDrive system and potential for expensive repairs, particularly with age.

Engine

3.0L Turbocharged Inline-6 (N55)

• Oil Leaks
  • Description/Symptoms: Oil leaks can occur from various points on the engine, including the valve cover gasket, oil filter housing gasket, and oil pan gasket. Symptoms include visible oil leaks, burning oil smell, and low oil levels.
  • Solution: Replace the leaking gaskets or seals. In severe cases, the entire oil filter housing or oil pan may need replacement.
  • Estimated Cost to Fix: $200 - $1000+ depending on the source and severity of the leak.
  • Recalls: None Found
• VANOS Solenoid Issues
  • Description/Symptoms: The VANOS (Variable Camshaft Timing) system can experience issues due to faulty solenoids. Symptoms include rough idling, reduced power, poor fuel economy, and error codes related to VANOS.
  • Solution: Replace the faulty VANOS solenoids. Cleaning the solenoids may temporarily resolve the issue, but replacement is usually necessary.
  • Estimated Cost to Fix: $200 - $600
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks can occur from the water pump, thermostat housing, radiator hoses, or expansion tank. Symptoms include low coolant levels, overheating, and visible coolant leaks.
  • Solution: Replace the leaking components. A pressure test can help identify the source of the leak.
  • Estimated Cost to Fix: $300 - $1000+ depending on the component.
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported rough shifting, hesitation, or slipping, particularly when shifting between gears at low speeds.
  • Solution: A transmission fluid flush and filter replacement may resolve the issue. In some cases, valve body replacement or a complete transmission rebuild may be necessary.
  • Estimated Cost to Fix: $300 - $4000+ depending on the severity of the issue.
  • Recalls: None Found

Suspension

• Air Suspension Problems
  • Description/Symptoms: The air suspension system can experience issues such as sagging, uneven ride height, or failure to adjust. This can be caused by leaks in the air struts, a faulty air compressor, or a failing ride height sensor.
  • Solution: Replace the faulty air struts, air compressor, or ride height sensors. A diagnostic scan can help pinpoint the source of the problem.
  • Estimated Cost to Fix: $800 - $2000+ per strut; $500 - $1500 for the compressor.
  • Recalls: None Found

Electrical

• iDrive System Malfunctions
  • Description/Symptoms: The iDrive system, which controls many of the vehicle’s functions, can experience various malfunctions, including screen freezes, slow response times, and software glitches.
  • Solution: Software updates may resolve some issues. In other cases, the iDrive control unit may need to be replaced.
  • Estimated Cost to Fix: $100 - $1000+ depending on the issue.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Excessive battery drain can occur due to various factors, including a faulty alternator, parasitic drain from electronic components, or a failing battery.
  • Solution: Test the battery and alternator. Identify and address any parasitic drains. 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, which adjust their beam based on steering angle and speed, can experience malfunctions, such as failing to move or displaying error messages.
  • Solution: Diagnose the headlight system. Repair or replace the faulty headlight assembly or control module.
  • Estimated Cost to Fix: $500 - $2000+
  • Recalls: None Found

Interior

• Seat Motor Failures
  • Description/Symptoms: The power seat motors can fail, preventing the seat from adjusting properly.
  • Solution: Replace the faulty seat motor.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found

Summary

The 2015 BMW 740Li xDrive, while offering a luxurious and comfortable experience, can be prone to various issues as it ages. Engine oil leaks and VANOS system problems are common concerns, as well as potential issues with the air suspension and iDrive system. Electrical problems, such as battery drain, can also occur. Repair costs can range from a few hundred dollars for minor issues to several thousand dollars for more significant problems such as suspension or transmission repairs.