2023 BMW M440i

The 2023 BMW M440i is a performance-oriented coupe, convertible, and Gran Coupe (four-door coupe) known for its blend of luxury, sporty handling, and potent powertrain. The most common engine option is the B58 3.0-liter turbocharged inline-six, producing 382 horsepower and 369 lb-ft of torque. Some owners praise the M440i for its smooth power delivery, comfortable ride (especially with adaptive dampers), and stylish design. Common criticisms include the iDrive infotainment system’s learning curve, the polarizing front grille design, and the relatively high price point. Other engine and transmission options that are available are the 2.0L Inline 4 cylinder B48 engine and the 8-speed sport automatic transmission.

Engine

B58 3.0L Turbocharged Inline-Six

• Oil Leaks
  • Description/Symptoms: Oil leaks developing from the oil filter housing gasket or valve cover gasket. Symptoms include seeing oil on the engine, smelling burning oil, or noticing a drop in oil level.
  • Solution: Replacing the faulty gasket.
  • Estimated Cost to Fix: $200 - $500+
• Coolant Leaks
  • Description/Symptoms: Coolant leaks from the thermostat housing or water pump. Symptoms include a low coolant warning light, visible coolant leaks, or engine overheating.
  • Solution: Replacing the thermostat housing or water pump.
  • Estimated Cost to Fix: $300 - $800+
• Turbocharger Issues
  • Description/Symptoms: Some owners have reported experiencing turbocharger issues such as wastegate actuator malfunction, resulting in loss of power or boost.
  • Solution: Replacing or repairing the turbocharger.
  • Estimated Cost to Fix: $1,500 - $3,000+
• Fuel Injector Issues
  • Description/Symptoms: Fuel injector failure causing rough idling, misfires, or reduced performance.
  • Solution: Replacing the faulty fuel injector(s).
  • Estimated Cost to Fix: $200 - $500 per injector

B48 2.0L Turbocharged Inline-Four

• No Issues Found

Transmission

8-Speed Sport Automatic Transmission

• Rough Shifting
  • Description/Symptoms: Some owners have reported experiencing rough or jerky shifting, particularly at lower speeds. This can be more noticeable when the transmission is cold.
  • Solution: A software update of the transmission control unit (TCU) might resolve the issue. In some cases, a full transmission replacement will be required.
  • Estimated Cost to Fix: $100 - $300+ for a software update, $5,000+ for transmission replacement.
• Hesitation
  • Description/Symptoms: Hesitation during acceleration or delayed response when shifting gears.
  • Solution: Could be related to software or mechanical issues within the transmission. Requires diagnosis to determine the cause and appropriate repair.
  • Estimated Cost to Fix: Varies depending on the issue, $100 - $5000+

Suspension

• Adaptive Damper Malfunction
  • Description/Symptoms: Error messages related to the adaptive dampers, resulting in a loss of ride comfort and handling.
  • Solution: Replacing the faulty damper(s).
  • Estimated Cost to Fix: $800 - $1500 per damper
• Premature Bushing Wear
  • Description/Symptoms: Some owners have noted premature wear of suspension bushings, leading to clunking noises or reduced handling precision.
  • Solution: Replacing worn bushings.
  • Estimated Cost to Fix: $300 - $800

Electrical

• iDrive Infotainment System Glitches
  • Description/Symptoms: Freezing, lagging, or random reboots of the iDrive system.
  • Solution: Software updates, or replacement of the iDrive module in severe cases.
  • Estimated Cost to Fix: $0 (Software Update) - $1,500+ (Module Replacement)
• Sensor Malfunctions
  • Description/Symptoms: Malfunctions of various sensors, such as parking sensors, tire pressure sensors, or driver-assistance system sensors.
  • Solution: Replacing the faulty sensor.
  • Estimated Cost to Fix: $100 - $500 per sensor

Exterior

• No Issues Found

Interior

• Rattling Noises
  • Description/Symptoms: Rattling noises emanating from the dashboard, door panels, or rear deck.
  • Solution: Identifying the source of the rattle and securing or replacing the affected components.
  • Estimated Cost to Fix: $100 - $500+

Recalls

• None Found

Summary

The 2023 BMW M440i presents a mix of potential issues, primarily revolving around the engine (oil/coolant leaks, turbo issues on the B58), transmission (rough shifting), and electrical systems (iDrive glitches). Suspension issues also occur. Repair costs can range from a few hundred dollars for minor fixes to several thousand for major component replacements.