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2023 BMW M8

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By Research the Car 4 min read

The 2023 BMW M8 is a high-performance luxury coupe, convertible, and Gran Coupe that boasts impressive power and opulent features. Available configurations include the M850i and the M8 Competition. The M8 Competition features a 4.4-liter twin-turbocharged V8 engine producing 617 horsepower and 553 lb-ft of torque. Drivers often praise the M8 for its blistering acceleration, comfortable ride (especially considering its performance capabilities), and luxurious interior. Common criticisms include its high price tag, somewhat numb steering feel, and complex infotainment system. This comprehensive breakdown addresses common problems and complaints owners of the 2023 BMW M8 have reported.

Engine

4.4L Twin-Turbocharged V8 (S63)

  • Oil Leaks
    • Description/Symptoms: Oil leaks are reported from various points, including valve cover gaskets, oil filter housing gaskets, and the oil pan gasket. Symptoms include oil spots on the ground, burning oil smell, and low oil level warnings.
    • Solution: Replacing the affected gaskets and seals.
    • Estimated Cost to Fix: $500 - $2000+ depending on the location of the leak and labor costs.
    • Recalls: None Found
  • Coolant Leaks
    • Description/Symptoms: Coolant leaks can occur from hoses, expansion tanks, and water pumps. Signs include low coolant level, overheating, and a sweet smell emanating from the engine bay.
    • Solution: Replacing the faulty hoses, expansion tank, or water pump.
    • Estimated Cost to Fix: $300 - $1500+ depending on the location of the leak and the parts needed.
    • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP76)

  • Harsh Shifting
    • Description/Symptoms: Some owners have reported experiencing harsh or jerky shifting, particularly during low-speed maneuvers or when the transmission is cold. This can manifest as a noticeable “clunk” or “jolt” when shifting gears.
    • Solution: In some cases, a software update from BMW can resolve the issue. In more severe cases, the valve body within the transmission may need to be replaced or the entire transmission replaced.
    • Estimated Cost to Fix: $200 (software update) - $8,000+ (transmission replacement)
    • Recalls: None Found
  • Hesitation/Delay in Gear Engagement
    • Description/Symptoms: Delayed engagement, or a hesitation before the transmission shifts into the desired gear. This can be particularly noticeable when accelerating from a stop or when trying to pass another vehicle.
    • Solution: Checking and replacing the transmission fluid is the first line of attack. If issues persist, further diagnostics are needed to check solenoids and valve bodies within the transmission.
    • Estimated Cost to Fix: $300 (fluid change) - $3,000 (valve body replacement).
    • Recalls: None Found

Suspension

  • Adaptive Damper Malfunctions
    • Description/Symptoms: The M8 features adaptive dampers that adjust to road conditions and driving style. Some owners have reported failures of these dampers, leading to a noticeably degraded ride quality, uneven handling, and error messages on the dashboard.
    • Solution: Replacing the faulty damper(s).
    • Estimated Cost to Fix: $1000 - $3000+ per damper, depending on the location and labor.
    • Recalls: None Found

Electrical

  • Infotainment System Freezing/Crashing
    • Description/Symptoms: The iDrive infotainment system can occasionally freeze, crash, or exhibit lag. This can affect navigation, audio, and other vehicle functions.
    • Solution: Restarting the iDrive system (holding the volume button down) is a temporary fix. In some cases, a software update from BMW is required.
    • Estimated Cost to Fix: $0 (restart) - $300+ (software update, if not covered under warranty).
    • Recalls: None Found
  • Sensor Malfunctions (Parking Sensors, Driver Assistance)
    • Description/Symptoms: Issues with parking sensors, lane departure warning, blind spot monitoring, or other driver-assistance features have been reported. These malfunctions can result in false alerts or the complete failure of the system.
    • Solution: Diagnosing and replacing the faulty sensor(s).
    • Estimated Cost to Fix: $200 - $1000+ per sensor, depending on location and labor.
    • Recalls: None Found

Exterior

  • No Issues Found

Interior

  • Trim Rattles/Squeaks
    • Description/Symptoms: Some owners have reported experiencing rattles and squeaks from various interior trim pieces, especially in the dashboard and door panels.
    • Solution: Identifying the source of the noise and tightening or replacing the affected trim pieces.
    • Estimated Cost to Fix: $100 - $500+ depending on the severity and labor involved.
    • Recalls: None Found

Summary

The 2023 BMW M8, while a potent and luxurious vehicle, is not without its potential problems. Engine oil and coolant leaks appear to be the most common mechanical issues, while electrical glitches and infotainment system problems are also present. Harsh shifting from the transmission is another reported issue. While most of these are minor, adaptive damper failures can be an expensive repair. The severity of these issues can range from minor annoyances to major mechanical failures, with repair costs varying accordingly. Prospective buyers should be aware of these potential issues and have the vehicle inspected by a qualified mechanic before purchase.

BMW, M8
BMW M8 2023
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