2021 BMW 840i xDrive Gran Coupe

Here’s a breakdown of common issues and complaints reported for the 2021 BMW 840i xDrive Gran Coupe, categorized by component. The 2021 BMW 840i xDrive Gran Coupe is a luxurious and sporty four-door coupe that offers a blend of performance and comfort. The 840i xDrive Gran Coupe is powered by a 3.0-liter turbocharged inline-6 engine producing 335 horsepower and 369 lb-ft of torque. Other powertrain options available for the 8 Series Gran Coupe include a more powerful V8 engine in the M850i xDrive model. Owners generally appreciate the car’s elegant design, comfortable interior, and engaging driving dynamics. Some criticisms include the high price point, limited rear headroom due to the sloping roofline, and the complexity of the infotainment system.

Engine

3.0L Turbocharged Inline-6 (B58)

• Oil Leaks
  • Description/Symptoms: Oil leaks may occur from the valve cover gasket and the oil filter housing gasket. Symptoms include oil spots on the garage floor, burning oil smell, and low oil level warnings.
  • Solution: Replace the valve cover gasket and/or the oil filter housing gasket.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Coolant leaks may occur from various hoses, connections, and the water pump. Symptoms include low coolant level warnings, overheating, and visible coolant leaks.
  • Solution: Identify and replace the leaking component. This may involve replacing hoses, clamps, or the water pump.
  • Estimated Cost to Fix: $100 - $1000+
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting
  • Description/Symptoms: Some owners have reported rough or jerky shifting, particularly when the transmission is cold. This can manifest as hesitation or clunking noises during gear changes.
  • Solution: In some cases, a software update can improve shift quality. If the problem persists, a transmission fluid flush or valve body replacement might be necessary.
  • Estimated Cost to Fix: $100 - $3000+
  • Recalls: None Found

Suspension

• Adaptive Damper Malfunctions
  • Description/Symptoms: Issues with the adaptive dampers can cause a rough or uneven ride. Warning lights may illuminate on the dashboard.
  • Solution: Diagnose the malfunctioning damper(s) and replace as needed.
  • Estimated Cost to Fix: $500 - $2000+ per damper
  • Recalls: None Found

Electrical

• Infotainment System Glitches
  • Description/Symptoms: The iDrive infotainment system can experience glitches, such as screen freezes, slow response times, or connectivity issues with Apple CarPlay or Android Auto.
  • Solution: Try restarting the system. Software updates may resolve the issue. In some cases, the iDrive control unit may need to be replaced.
  • Estimated Cost to Fix: $0 (software update) - $1500+ (iDrive control unit replacement)
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Malfunctions of various sensors, such as parking sensors or driver assistance system sensors, can occur. This may result in warning lights and/or system inoperability.
  • Solution: Diagnose the faulty sensor and replace it.
  • Estimated Cost to Fix: $200 - $800+ per sensor
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Trim Rattles
  • Description/Symptoms: Rattles and squeaks from interior trim pieces, particularly in the dashboard and door panels.
  • Solution: Tighten or replace loose trim pieces. Adding felt or foam padding can help dampen vibrations.
  • Estimated Cost to Fix: $50 - $500+ depending on the severity and location
• Seat Motor Issues
  • Description/Symptoms: Problems with the electric seat adjustment motors, causing seats to move slowly or not at all.
  • Solution: Replace the faulty seat motor or control module.
  • Estimated Cost to Fix: $300 - $1000+
  • Recalls: None Found

Summary

The 2021 BMW 840i xDrive Gran Coupe generally receives positive reviews, but some owners have reported issues related to oil leaks, transmission shifting, electrical glitches, and interior trim. The severity of these issues varies, but some repairs can be costly, particularly those involving the adaptive suspension or infotainment system. Prospective buyers should be aware of these potential problems and consider a pre-purchase inspection to assess the overall condition of the vehicle. While none of the issues are widespread enough to be considered major, keeping up with routine maintenance can save money in the long run.