2020 BMW 740i

Here’s a comprehensive breakdown of common issues and complaints for the 2020 BMW 740i, organized by category and engine/transmission configuration. The 2020 BMW 740i is a luxury sedan known for its comfortable ride, opulent interior, and advanced technology. Engine options include a 3.0-liter turbocharged inline-6 (the 740i), a 4.4-liter twin-turbocharged V8 (750i), and a plug-in hybrid combining a 2.0-liter turbocharged inline-4 with an electric motor (745e). The 740i’s 3.0L inline-6 produces 335 horsepower and 330 lb-ft of torque. Drivers often praise the 7 Series for its smooth power delivery, quiet cabin, and ample space. Some common criticisms include the complicated infotainment system and the high cost of maintenance and repairs. All engine options are paired with an 8-speed automatic transmission.

Engine

3.0L Turbocharged Inline-6 (B58)

• Oil Leaks
  • Description/Symptoms: Oil leaks can develop from the valve cover gasket, oil filter housing gasket, or oil pan gasket. Symptoms include visible oil leaks under the car, a burning oil smell, and low oil levels.
  • Solution: Replacing the affected gasket.
  • Estimated Cost to Fix: $200 - $800+ depending on the source of the leak.
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks can originate from the coolant expansion tank, hoses, or the water pump. Symptoms include a low coolant warning light, visible coolant leaks, and overheating.
  • Solution: Replacing the leaking component (expansion tank, hose, or water pump).
  • Estimated Cost to Fix: $150 - $700+ depending on the component.
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Harsh Shifting/Hesitation
  • Description/Symptoms: Reports of harsh or delayed shifting, particularly between lower gears. Some owners describe a “clunking” sensation during gear changes.
  • Solution: Software updates to the transmission control module (TCM) may alleviate the issue. In some cases, a transmission fluid flush and filter change may be recommended. In more severe cases, valve body replacement or complete transmission replacement is required.
  • Estimated Cost to Fix: $200 for a software update, $300 - $500 for a fluid flush and filter change, $1500 - $3000+ for valve body replacement, $5000+ for transmission replacement.
  • Recalls: None Found

Suspension

• Air Suspension Issues (If Equipped)
  • Description/Symptoms: The 740i could be equipped with air suspension, which can develop leaks in the air struts or compressor failure. Symptoms include the vehicle sitting lower than normal, uneven ride height, or a warning light on the dashboard.
  • Solution: Replacing the leaking air strut(s) or the air suspension compressor.
  • Estimated Cost to Fix: $800 - $2000+ per strut, $700 - $1500+ for the compressor.
  • Recalls: None Found

Electrical

• iDrive System Malfunctions
  • Description/Symptoms: The iDrive infotainment system can experience glitches, including screen freezes, unresponsive controls, and connectivity issues.
  • Solution: Performing a software update, resetting the iDrive system, or replacing the iDrive control unit.
  • Estimated Cost to Fix: $100 - $300 for a software update, $500 - $2000+ for control unit replacement.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Excessive battery drain can occur due to a faulty module or system not properly shutting down when the vehicle is off. This can lead to a dead battery, especially after short periods of inactivity.
  • Solution: Identifying the source of the drain and replacing the faulty component. This may involve diagnostic testing to isolate the circuit causing the issue.
  • Estimated Cost to Fix: $100 - $500+ for diagnostic testing, $200+ for battery replacement, component replacement costs vary.
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions (If Equipped)
  • Description/Symptoms: The adaptive headlights may fail to adjust properly or display error messages.
  • Solution: Replacing the headlight assembly or control module.
  • Estimated Cost to Fix: $1500 - $3000+ per headlight.
  • Recalls: None Found

Interior

• Seat Comfort Issues
  • Description/Symptoms: Some owners report discomfort with the multi-contour seats, despite their adjustability. This is often subjective and related to individual preferences.
  • Solution: Adjusting seat settings, or replacing the seat cushioning (less common).
  • Estimated Cost to Fix: Varies depending on the solution, but usually minimal for adjustments.
  • Recalls: None Found

Summary

The 2020 BMW 740i, while a luxurious and technologically advanced vehicle, is not without its potential issues. The most common concerns revolve around engine oil and coolant leaks, transmission performance, and electrical system glitches, particularly with the iDrive system. Air suspension issues, if equipped, can also be costly to repair. The severity of these issues can range from minor inconveniences to major repairs, with costs varying accordingly. Prospective buyers should be aware of these potential problems and factor them into their purchasing decision, including budgeting for potential maintenance and repairs. A pre-purchase inspection by a qualified BMW mechanic is highly recommended.