2021 BMW M440i

Introduction to the 2021 BMW M440i

The 2021 BMW M440i is a high-performance luxury sports coupe that offers exceptional driving dynamics and a well-appointed interior. It is powered by a 3.0-liter turbocharged inline-six engine that produces 382 horsepower and 369 lb-ft of torque. The M440i is available with either a six-speed manual transmission or an eight-speed automatic transmission.

BMW enthusiasts praised the M440i’s thrilling performance and luxurious cabin, but some have encountered issues with various components of the vehicle.

Engine

• 3.0L Turbocharged Inline-Six (B58)
  • Water pump failure: Premature failure of the water pump can lead to overheating and engine damage. Symptoms include coolant leaks, overheating, and loss of power. The solution involves replacing the water pump. Estimated Cost to Fix: $800 - $1,200+
  • Fuel injector issues: Faulty fuel injectors can cause rough idling, hesitation, and decreased performance. The injectors need to be replaced. Estimated Cost to Fix: $400 - $800+
• 6-Speed Manual Transmission
  • No Issues Found
• 8-Speed Automatic Transmission
  • Transmission software issues: Early vehicles may experience software bugs that cause shifting problems, such as delayed or harsh shifts. The issue is resolved by updating the transmission software. Estimated Cost to Fix: Free
  • Mechatronic unit failure: The mechatronic unit, which controls the transmission, can fail prematurely. Symptoms include shifting issues, loss of power, and transmission error messages. The mechatronic unit needs to be replaced. Estimated Cost to Fix: $2,500 - $4,000+

Suspension

• Adaptive M Suspension:
  • No Issues Found

Electrical

• Battery drain: Some vehicles may experience excessive battery drain, leading to difficulties starting the car. The cause can be a faulty alternator or other electrical component. The affected parts need to be replaced. Estimated Cost to Fix: $500 - $1,500+
• Infotainment system glitches: The iDrive infotainment system may experience occasional glitches, such as freezing or unresponsive touchscreens. The issue is often resolved by performing a software update. Estimated Cost to Fix: Free

Exterior

• Grill chrome peeling: The chrome trim on the front grill may peel or flake over time. The affected grill needs to be replaced. Estimated Cost to Fix: $400 - $800+
• Sunroof rattling: Some vehicles may experience a rattling noise from the panoramic sunroof. The sunroof mechanism may need to be adjusted or repaired. Estimated Cost to Fix: $200 - $600+

Interior

• Headliner noise: Some vehicles may experience excessive noise from the headliner, particularly when driving on rough roads. The headliner may need to be replaced. Estimated Cost to Fix: $600 - $1,000+
• Seat heating malfunction: The heated seats may not function properly or may overheat. The seat heating elements or control module may need to be replaced. Estimated Cost to Fix: $500 - $1,000+

Summary

The 2021 BMW M440i is a capable and enjoyable sports coupe, but it is not without its potential issues. While some of the problems, such as transmission software issues, can be resolved relatively easily, others, like engine water pump failure and mechatronic unit failure, can be more costly and time-consuming to fix. Overall, the severity and cost of the issues vary, so it’s important to weigh the potential risks and benefits before purchasing a used M440i.