2021 BMW 840i Gran Coupe

Introduction: The 2021 BMW 840i Gran Coupe is a high-performance luxury coupe with a sleek design and ample cabin space. It comes equipped with a powerful 3.0L TwinPower Turbo inline-six engine, producing 335 horsepower and 369 lb-ft of torque. The 840i Gran Coupe has a wide range of features and technology, making it a popular choice among enthusiasts. However, like any vehicle, it has its share of issues that owners may encounter.

Engine

3.0L TwinPower Turbo Inline-Six

• Timing Chain Tensioner Failure:
  • Description/Symptoms: Causes excessive noise and a rattling sound during engine operation.
  • Solution: Replacement of timing chain tensioner.
  • Estimated Cost to Fix: $800 - $1,200+
  • Recalls: None Found

Transmission

8-Speed Automatic

• Jerky Shifting:
  • Description/Symptoms: Rough or inconsistent gear changes, especially during low-speed driving.
  • Solution: Software update or replacement of transmission control module.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Suspension

• Adaptive Suspension Malfunction:
  • Description/Symptoms: Abnormal ride quality, excessive body roll, or warning light on dashboard.
  • Solution: Inspection and replacement of faulty adaptive suspension components.
  • Estimated Cost to Fix: $1,000 - $2,000+ per corner
  • Recalls: None Found

Electrical

• Battery Discharge:
  • Description/Symptoms: Vehicle fails to start due to a dead battery, despite regular use.
  • Solution: Diagnosis and replacement of faulty battery or charging system components.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Infotainment System Freeze:
  • Description/Symptoms: Touchscreen becomes unresponsive or displays glitches.
  • Solution: Software update or replacement of infotainment module.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Exterior

• Panoramic Roof Malfunction:
  • Description/Symptoms: Roof fails to open or close, or exhibits noise during operation.
  • Solution: Replacement of sunroof motor or control unit.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found

Interior

• Ambient Lighting Failure:
  • Description/Symptoms: Interior lighting fails to illuminate or flickers.
  • Solution: Replacement of faulty lighting modules.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Headliner Sagging:
  • Description/Symptoms: Roof lining begins to sag or detach from the interior.
  • Solution: Re-attaching or replacement of headliner.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Summary

The 2021 BMW 840i Gran Coupe is a well-rounded vehicle with its share of potential issues. While some issues are relatively minor and inexpensive to fix, others can be more costly and time-consuming to address. Overall, the severity and cost of the issues vary greatly, with some requiring only a software update and others potentially leading to significant expenses. It’s important to note that the issues mentioned here may not be experienced by all owners, and the reliability of the vehicle will depend on factors such as maintenance history and driving habits.