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2014 BMW 740Li

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By Research the Car 4 min read

The 2014 BMW 740Li is a luxury sedan known for its comfortable ride, spacious interior, and powerful engine. The 740Li comes standard with a 3.0-liter turbocharged inline-6 engine producing 315 horsepower and 332 lb-ft of torque. Other engine options include a 4.4-liter turbocharged V8 in the 750Li, and a 6.0-liter turbocharged V12 in the 760Li. All models come equipped with an 8-speed automatic transmission. People generally like the 7 Series for its smooth ride, powerful engine options, and luxurious features. Common complaints include high maintenance costs, complex electronics, and occasional reliability issues.

Engine

3.0L Turbocharged Inline-6 (N55)

  • Oil Filter Housing/Cooler Gasket Leak
    • Description/Symptoms: Oil leak around the oil filter housing or oil cooler. May notice oil drips under the car or a burning oil smell. Can lead to low oil levels and potential engine damage if not addressed.
    • Solution: Replace the oil filter housing gasket and/or oil cooler gasket.
    • Estimated Cost to Fix: $400 - $800+
    • Recalls: None Found
  • VANOS Solenoid Issues
    • Description/Symptoms: Rough idling, decreased power, and potential engine stalling. Can trigger a check engine light with VANOS-related fault codes.
    • Solution: Replace the faulty VANOS solenoid(s).
    • Estimated Cost to Fix: $300 - $600+ per solenoid
    • Recalls: None Found
  • Water Pump Failure
    • Description/Symptoms: Overheating, coolant leaks, and potential engine damage. May notice a warning light on the dashboard.
    • Solution: Replace the water pump and thermostat.
    • Estimated Cost to Fix: $800 - $1200+
    • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP45/70)

  • Mechatronic Sleeve Leak
    • Description/Symptoms: Transmission fluid leak around the electrical connector sleeve. Can cause shifting issues, slipping, or complete transmission failure if fluid levels get too low.
    • Solution: Replace the mechatronic sleeve and refill the transmission fluid.
    • Estimated Cost to Fix: $300 - $600+
    • Recalls: None Found
  • Valve Body Issues
    • Description/Symptoms: Harsh shifting, delayed engagement, slipping between gears.
    • Solution: Replace or rebuild the valve body.
    • Estimated Cost to Fix: $1500 - $3000+
    • Recalls: None Found

Suspension

  • Air Suspension Compressor Failure
    • Description/Symptoms: The vehicle sits unevenly, takes a long time to raise or lower, or does not raise or lower at all. Air suspension malfunction warnings may appear on the dashboard.
    • Solution: Replace the air suspension compressor.
    • Estimated Cost to Fix: $800 - $1500+
    • Recalls: None Found
  • Air Strut Leaks
    • Description/Symptoms: Similar to compressor failure, but can also be accompanied by hissing sounds from the leaking strut.
    • Solution: Replace the leaking air strut.
    • Estimated Cost to Fix: $1000 - $2000+ per strut
    • Recalls: None Found

Electrical

  • iDrive System Malfunctions
    • Description/Symptoms: Freezing, slow response times, screen blackouts, or complete system failure.
    • Solution: Software updates, replacement of the iDrive control unit, or replacement of the screen itself.
    • Estimated Cost to Fix: $300 - $2000+ depending on the issue.
    • Recalls: None Found
  • Comfort Access Issues
    • Description/Symptoms: Key fob not being recognized, difficulty locking or unlocking the doors, or push-button start malfunctions.
    • Solution: Replace the key fob battery, reprogram the key fob, or replace the door handle sensors.
    • Estimated Cost to Fix: $100 - $800+
    • Recalls: None Found
  • Battery Drain Issues
    • Description/Symptoms: The battery drains overnight or after a few days of not being driven. This can be due to a faulty module not going to sleep, a parasitic draw from an aftermarket accessory, or a failing battery.
    • Solution: Diagnose the source of the parasitic draw and repair the faulty component. Replace the battery if it is old or damaged.
    • Estimated Cost to Fix: $200 - $1000+ depending on the issue.
    • Recalls: None Found

Exterior

  • Adaptive Headlight Malfunctions
    • Description/Symptoms: Headlights not leveling correctly, error messages related to the adaptive headlight system, or headlights not turning on at all.
    • Solution: Replace the headlight control module, level sensors, or the entire headlight assembly.
    • Estimated Cost to Fix: $500 - $2000+
    • Recalls: None Found

Interior

  • Sunroof Issues
    • Description/Symptoms: Sunroof not opening or closing properly, getting stuck, or making grinding noises. Can be due to a broken motor or damaged tracks.
    • Solution: Repair or replace the sunroof motor, tracks, or entire sunroof assembly.
    • Estimated Cost to Fix: $500 - $1500+
    • Recalls: None Found

Summary

The 2014 BMW 740Li, while a luxurious and enjoyable vehicle, can be prone to several issues. Engine and transmission problems, especially leaks and valve body issues, can be costly to repair. Suspension and electrical system faults can also contribute to high ownership costs. While some issues might be minor, others, like air suspension failures or engine overheating, can be more severe and lead to significant repair bills. Potential buyers should be aware of these common problems and factor them into their purchasing decision, including budgeting for potential maintenance and repairs.

BMW, 740Li
BMW 740Li 2014
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