2020 BMW 840i xDrive Gran Coupe

Alright, here’s a breakdown of common issues and complaints for the 2020 BMW 840i xDrive Gran Coupe, following your specified format. The 2020 BMW 840i xDrive Gran Coupe is a stylish and luxurious four-door coupe. The 840i xDrive Gran Coupe is powered by a 3.0-liter turbocharged inline-6 engine producing 335 horsepower and 368 lb-ft of torque, coupled with an 8-speed automatic transmission. The 840i is praised for its elegant styling, comfortable ride, and powerful engine. However, some owners have reported issues with the infotainment system, electrical glitches, and the complexity of the car’s technology.

Engine

3.0L Turbocharged Inline-6 (B58)

• Coolant Leak from Thermostat Housing
  • Description/Symptoms: Coolant leak can be detected by a puddle of coolant under the car or a low coolant warning light. The thermostat housing itself is prone to cracking, especially with age and temperature fluctuations.
  • Solution: Replace the thermostat housing assembly, including the thermostat.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found
• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak around the oil filter housing area. Visible oil residue and a burning oil smell may also be present.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough or Delayed Shifting
  • Description/Symptoms: Hesitation when shifting gears, especially during acceleration or deceleration. May also experience harsh or jerky shifts.
  • Solution: Some owners have had success with a transmission fluid flush and filter replacement. In more severe cases, valve body replacement or transmission rebuild/replacement may be necessary.
  • Estimated Cost to Fix: $300 (fluid flush) - $5000+ (transmission replacement)
  • Recalls: None Found

Suspension

• Adaptive Damper Malfunctions
  • Description/Symptoms: Error messages related to the adaptive suspension, uneven ride height, or a noticeably bumpy ride.
  • Solution: Diagnosis to identify the faulty damper(s) or control module. Replacement of the affected components.
  • Estimated Cost to Fix: $800 - $2000+ per damper
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Rebooting
  • Description/Symptoms: The iDrive system may freeze, become unresponsive, or spontaneously reboot.
  • Solution: Software update from the dealer. In some cases, hardware replacement (head unit) may be required.
  • Estimated Cost to Fix: $0 (software update if under warranty) - $1500+ (head unit replacement)
  • Recalls: None Found
• Sensor Malfunctions (Parking Sensors, Driver Assistance Systems)
  • Description/Symptoms: Error messages related to parking sensors, blind-spot monitoring, lane departure warning, or other driver-assistance features.
  • Solution: Diagnosis to identify the faulty sensor or module. Replacement of the affected component(s).
  • Estimated Cost to Fix: $200 - $800+ per sensor
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Creaking or Rattling Noises from Trim Pieces
  • Description/Symptoms: Annoying creaking or rattling sounds emanating from the dashboard, door panels, or other interior trim pieces, especially when driving on uneven surfaces.
  • Solution: Locating the source of the noise and applying felt tape or other sound-dampening material. Tightening loose fasteners.
  • Estimated Cost to Fix: $50 - $300+ (depending on complexity and labor)
  • Recalls: None Found

Summary

The 2020 BMW 840i xDrive Gran Coupe appears to have a mix of minor and potentially more significant issues. Electrical glitches and infotainment problems seem relatively common and can be frustrating. The engine issues (coolant and oil leaks) are also prevalent and could lead to costly repairs if left unaddressed. Suspension issues can also be expensive to fix. However, most issues will be covered under warranty. Overall, it’s crucial to get a pre-purchase inspection before buying a used 2020 840i xDrive Gran Coupe, and to be aware of the potential for these common problems to arise.