2024 BMW 840i Gran Coupe

The 2024 BMW 840i Gran Coupe is a luxury four-door coupe offering a blend of performance and sophistication. The 840i Gran Coupe comes standard with a 3.0-liter turbocharged inline-6 engine that produces 335 horsepower and 369 lb-ft of torque. Other engine options include the M850i xDrive with a 4.4-liter twin-turbo V8 engine producing 523 horsepower and 553 lb-ft of torque, and the high-performance M8 Competition Gran Coupe with an upgraded version of the same V8, producing 617 horsepower and 553 lb-ft of torque. All models use an 8-speed automatic transmission. Drivers often praise the 840i Gran Coupe for its sleek design, luxurious interior, and engaging driving dynamics. Criticisms sometimes include a tight rear seat for a car of its size and a high price point.

Electrical

• iDrive System Malfunctions
  • Description/Symptoms: The iDrive infotainment system can occasionally experience glitches, freezes, or slow response times. This can affect navigation, audio, and other vehicle functions.
  • Solution: A software update from the dealer or a system reset may resolve the issue. In more severe cases, a replacement of the iDrive unit could be necessary.
  • Estimated Cost to Fix: Software update, free; iDrive unit replacement, $1,000 - $2,500+
  • Recalls: None Found

Exterior

• Sensor Malfunctions
  • Description/Symptoms: Driver assistance features, such as parking sensors and blind-spot monitoring, may malfunction, providing false alerts or failing to detect obstacles.
  • Solution: Diagnosis to identify faulty sensors. Replacement of malfunctioning sensor(s). Calibration of sensor system.
  • Estimated Cost to Fix: $300 - $800+ per sensor, plus labor and calibration

Interior

• Seat Adjustment Issues
  • Description/Symptoms: Power seats may fail to adjust properly or at all due to faulty motors or wiring.
  • Solution: Diagnosis of motor and wiring. Replacement of faulty motor or repair of wiring.
  • Estimated Cost to Fix: $200 - $1,000+ depending on complexity

Engine

3.0L Turbocharged Inline-6 (B58)

• Coolant Leaks
  • Description/Symptoms: Coolant leaks can occur from the coolant expansion tank or hoses, leading to engine overheating. Symptoms include low coolant levels, warning lights, and visible coolant leaks.
  • Solution: Inspect and replace damaged hoses, fittings, or the coolant expansion tank. Pressure test the system to identify all leaks.
  • Estimated Cost to Fix: $200 - $800+

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners report experiencing rough or delayed shifting, particularly between certain gears. This can also manifest as hesitation during acceleration.
  • Solution: Software update to transmission control module (TCM) and/or replacing transmission fluid. In more severe cases, valve body replacement or transmission replacement may be necessary.
  • Estimated Cost to Fix: Software update, free; Fluid change, $300 - $500; Valve body replacement, $1,500 - $3,000; Transmission replacement, $5,000 - $10,000+
  • Recalls: None Found

Suspension

• Air Suspension Issues (if equipped)
  • Description/Symptoms: Vehicles equipped with air suspension may experience issues with the air compressor, air struts, or air lines. This can lead to ride height issues, uneven suspension, or failure of the suspension system.
  • Solution: Diagnose the specific issue (compressor, strut, lines). Replace the faulty component. Recalibrate the suspension system.
  • Estimated Cost to Fix: Air compressor replacement: $800 - $1,500+; Air strut replacement: $1,000 - $2,000+ per strut; Air line repair: $200 - $500+
  • Recalls: None Found

Summary:

The 2024 BMW 840i Gran Coupe is a luxurious vehicle that generally provides a good driving experience, but like any car, it’s not without its potential issues. The most commonly reported problems involve electrical glitches with the iDrive system and potential coolant leaks and transmission performance. These issues can range from relatively inexpensive fixes like software updates to more costly repairs involving component replacements. While some problems like iDrive issues can be inconvenient, more serious problems like transmission issues can significantly impact reliability and cost. Therefore, prospective buyers should be aware of these potential issues and consider a thorough pre-purchase inspection.