2024 BMW 840i

The 2024 BMW 840i is a luxury grand tourer known for its sleek design, comfortable ride, and powerful performance. The 840i model comes standard with a 3.0-liter turbocharged inline-6 engine producing 335 horsepower and 369 lb-ft of torque. Other engine options available are the M850i’s 4.4-liter twin-turbo V8 engine, which produces 523 horsepower and 553 lb-ft of torque, and the high-performance M8 models, which produce up to 617 horsepower. All engines are paired with an 8-speed automatic transmission. Owners generally appreciate the 840i’s refined driving experience, stylish interior, and advanced technology. Common dislikes include the high price point and the limited rear seat space.

Engine

3.0L Turbocharged Inline-6 (B58)

• Oil Filter Housing Leak
  • Description/Symptoms: Oil leak originating from the oil filter housing. Noticeable oil smell or visible oil drips under the vehicle. Can lead to low oil levels and potential engine damage if not addressed.
  • Solution: Replacement of the oil filter housing gasket and potentially the oil filter housing itself if warped or damaged.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found
• Coolant Leak
  • Description/Symptoms: Low Coolant warning on the dashboard.
  • Solution: Replace Coolant Expansion Tank.
  • Estimated Cost to Fix: $600 - $900+
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP)

• Rough Shifting
  • Description/Symptoms: Harsh or jerky shifts, particularly at lower speeds. May also experience delayed shifting or hesitation when accelerating.
  • Solution: In some cases, a software update of the transmission control module (TCM) can resolve the issue. In more severe cases, valve body replacement or complete transmission replacement may be required.
  • Estimated Cost to Fix: $300 (software update) - $4,000+ (transmission replacement)
  • Recalls: None Found

Suspension

No Issues Found

Electrical

• iDrive System Freezing/Crashing
  • Description/Symptoms: The iDrive infotainment system intermittently freezes, crashes, or becomes unresponsive. May require a system reboot to restore functionality.
  • Solution: Performing a software update, replacing the iDrive screen, or if the problem persists, replacing the iDrive computer.
  • Estimated Cost to Fix: $150 (software update) - $1,500+ (iDrive computer replacement)
  • Recalls: None Found
• Parking Sensor Malfunction
  • Description/Symptoms: Parking sensors fail to detect obstacles or give false alerts. This can occur intermittently or constantly.
  • Solution: Diagnosing the faulty sensor with a scan tool and replacing the damaged sensor.
  • Estimated Cost to Fix: $200 - $500+ (depending on the number of sensors replaced and labor costs)
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunction
  • Description/Symptoms: Adaptive headlights fail to adjust properly, resulting in poor visibility or error messages on the dashboard.
  • Solution: Replacing the headlight assembly.
  • Estimated Cost to Fix: $2,000+
  • Recalls: None Found

Interior

• Creaking Dashboard
  • Description/Symptoms: Annoying creaking or rattling noises emanating from the dashboard area, particularly when driving on uneven surfaces.
  • Solution: Locating the source of the creaking and applying felt tape or foam padding to eliminate the friction between the components.
  • Estimated Cost to Fix: $100 - $300+ (depending on the complexity and labor required)
  • Recalls: None Found

Summary

The 2024 BMW 840i appears to have some common issues related to the engine (oil leaks), transmission (rough shifting), electrical system (iDrive freezing, parking sensor issues), exterior (headlight malfunction) and interior (creaking dashboard). The severity of these issues ranges from minor annoyances to potentially costly repairs. The estimated cost to fix varies widely, with some electrical and interior issues being relatively inexpensive to resolve, while engine and transmission problems can be significantly more expensive. Potential buyers should be aware of these potential issues and factor them into their purchasing decision.