2021 BMW M440i xDrive

The 2021 BMW M440i xDrive coupe is a performance-oriented variant of the 4 Series, offering a blend of luxury and sportiness. Powered by a turbocharged 3.0-liter inline-six engine, it produces 382 horsepower and 369 lb-ft of torque. The engine is paired with an 8-speed automatic transmission. While praised for its powerful engine, sharp handling, and upscale interior, some owners have reported issues related to its infotainment system and occasional electrical glitches. Other engine options include the 2.0-liter inline-4 engine producing 255 horsepower and 295 lb-ft of torque. A notable like for many is the performance and the smooth inline 6-cylinder engine, while some dislike the styling and prefer the look of the previous generation 4-Series.

Engine

B58 3.0L Turbocharged Inline-Six

• Coolant Leak from Coolant Expansion Tank
  • Description/Symptoms: Coolant leak is detected from the coolant expansion tank. This can be identified by a puddle of coolant beneath the engine bay of the vehicle. It can also be determined from a low coolant level warning in the vehicle.
  • Solution: Replace the coolant expansion tank.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Oil Filter Housing Gasket Leak
  • Description/Symptoms: Oil leak is detected from the oil filter housing area. The leak can be detected by a visible oil trail down the side of the engine block, or from a burning oil smell when the engine is hot.
  • Solution: Replace the oil filter housing gasket.
  • Estimated Cost to Fix: $400 - $700+
  • Recalls: None Found

Transmission

ZF 8HP 8-Speed Automatic

• Rough or Delayed Shifting
  • Description/Symptoms: Some owners have reported experiencing rough or delayed shifting, particularly during cold starts or under heavy acceleration. This can manifest as hesitation between gears or a noticeable “clunk” when shifting.
  • Solution: Software update of the transmission control module (TCM) or, in more severe cases, replacement of the valve body.
  • Estimated Cost to Fix: $200 (software update) - $2,000+ (valve body replacement)
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Rebooting
  • Description/Symptoms: The iDrive infotainment system occasionally freezes, reboots unexpectedly, or displays error messages. This can affect navigation, audio, and other system functions.
  • Solution: Software update of the iDrive system. In some cases, replacement of the iDrive module may be necessary.
  • Estimated Cost to Fix: $0 (software update under warranty) - $1,500+ (iDrive module replacement)
  • Recalls: None Found
• Sensor Malfunctions
  • Description/Symptoms: Various sensors such as parking sensors, blind spot monitoring, and adaptive cruise control sensors may malfunction. This can lead to inaccurate readings, false warnings, or system failures.
  • Solution: Diagnostic check to identify the faulty sensor, followed by replacement of the sensor.
  • Estimated Cost to Fix: $200 - $500+ per sensor
  • Recalls: None Found

Interior

• Rattling or Squeaking Noises
  • Description/Symptoms: Some owners have reported experiencing rattling or squeaking noises emanating from the dashboard, door panels, or rear seats. This is more noticeable on rough road surfaces.
  • Solution: Tightening of loose components, application of felt tape to contact points, or replacement of damaged clips or fasteners.
  • Estimated Cost to Fix: $100 - $500+ (depending on the source and complexity of the rattle)
  • Recalls: None Found

Summary

The 2021 BMW M440i xDrive is a powerful and luxurious vehicle, but owners have reported a few common issues. Engine issues like coolant leaks and oil leaks are prevalent. Transmission issues, while less frequent, can be costly to repair. Electrical gremlins and interior rattles are also potential concerns. The severity of these issues varies, but addressing them can range from a few hundred dollars to over a thousand dollars, depending on the repair needed. Potential buyers should be aware of these potential problems and inquire about their repair history when considering the purchase of a used 2021 BMW M440i xDrive.