2016 BMW M6 Gran Coupe

Here’s a breakdown of common issues reported by owners of the 2016 BMW M6 Gran Coupe, categorized and detailed as requested.

The 2016 BMW M6 Gran Coupe is a high-performance luxury four-door coupe powered by a 4.4-liter TwinPower Turbo V8 engine. This engine produces 560 horsepower and 500 lb-ft of torque. This is paired with a 7-speed dual-clutch transmission (DCT). Some owners adore the car’s blistering acceleration, luxurious interior, and sleek styling. On the other hand, some dislike the high maintenance costs, firm ride, and complex electronics that can sometimes be troublesome.

Engine

4.4L TwinPower Turbo V8 (S63)

• Oil Leaks
  • Description/Symptoms: Oil leaks are a fairly common complaint on the S63 engine. They often manifest around the valve cover gaskets, oil pan gasket, and turbocharger oil lines. Symptoms include visible oil drips under the car, the smell of burning oil, and low oil levels.
  • Solution: Replacing the leaking gaskets or lines is the standard fix. A thorough inspection should be performed to pinpoint the exact source of the leak.
  • Estimated Cost to Fix: $500 - $2,000+ depending on the location and complexity of the leak.
• VANOS (Variable Valve Timing) Issues
  • Description/Symptoms: VANOS system problems can lead to rough idling, reduced power, poor fuel economy, and engine stalling. Error codes related to VANOS timing or solenoid failures may also be present.
  • Solution: Replacing the faulty VANOS solenoids, cleaning or replacing the VANOS units themselves, or addressing oil pressure issues in the VANOS system are common solutions.
  • Estimated Cost to Fix: $800 - $3,000+ depending on the specific components that need repair or replacement.
• Turbocharger Issues
  • Description/Symptoms: The twin turbochargers can sometimes experience problems, including oil leaks, bearing failures, and wastegate malfunctions. Symptoms can include a loss of power, unusual noises from the engine, and error codes related to turbocharger performance.
  • Solution: Depending on the issue, repairs might involve replacing the turbocharger oil lines, rebuilding the turbochargers, or replacing them entirely.
  • Estimated Cost to Fix: $2,000 - $6,000+ per turbocharger, depending on whether rebuilding or replacement is needed.

Transmission

7-Speed Dual-Clutch Transmission (DCT)

• Jerky Shifting/Hesitation
  • Description/Symptoms: Some owners report experiencing jerky or harsh shifting, especially at low speeds. Hesitation when accelerating from a stop or between gear changes can also occur.
  • Solution: In some cases, a transmission software update can improve shifting smoothness. In other cases, it may be necessary to replace the clutch packs or the mechatronics unit within the transmission.
  • Estimated Cost to Fix: $500 for software updates, $3,000 - $8,000+ for clutch or mechatronics unit replacement.
• Transmission Slippage
  • Description/Symptoms: The transmission slips or fails to shift into the correct gear.
  • Solution: Replace transmission.
  • Estimated Cost to Fix: $6,000 - $10,000+

Suspension

• Adaptive Suspension Malfunctions
  • Description/Symptoms: The M6 Gran Coupe features an adaptive suspension system. Problems can arise with the electronic dampers, leading to a rough ride, uneven handling, or error messages related to the suspension system.
  • Solution: Replacing faulty dampers or addressing wiring issues within the adaptive suspension system is often necessary.
  • Estimated Cost to Fix: $800 - $2,000+ per damper, depending on labor and parts costs.

Electrical

• iDrive System Issues
  • Description/Symptoms: The iDrive infotainment system can experience glitches, freezing, or complete failure. This can affect navigation, audio, climate control, and other vehicle functions.
  • Solution: Software updates sometimes resolve iDrive issues. In more severe cases, the iDrive control unit may need to be replaced.
  • Estimated Cost to Fix: $300 - $1,500+ depending on the nature of the problem and whether a replacement is required.
• Battery Drain
  • Description/Symptoms: Excessive battery drain can lead to difficulty starting the car or a completely dead battery. This can be caused by various factors, including faulty modules, aftermarket accessories, or a failing battery.
  • Solution: Diagnosing the source of the battery drain is essential. This may involve testing individual modules or circuits to identify the culprit. Replacing the battery may also be necessary.
  • Estimated Cost to Fix: $100 - $500+ for diagnostics and battery replacement; cost can increase significantly if a more complex electrical issue is identified.

Exterior

• No Issues Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof malfunctions, such as getting stuck open or closed, or making excessive noise during operation.
  • Solution: Repairing or replacing the sunroof motor, tracks, or other components.
  • Estimated Cost to Fix: $400 - $1,500+ depending on the complexity of the repair.

Summary

The 2016 BMW M6 Gran Coupe is a high-performance vehicle that can be rewarding to own but comes with potential maintenance costs. Engine and transmission issues, particularly related to oil leaks, VANOS, the DCT, and turbochargers, are relatively common and can be expensive to address. Electrical glitches, especially concerning the iDrive system and battery drain, are also concerns. While the car offers a luxurious interior and striking exterior, potential buyers should be aware of these potential issues and factor them into their ownership considerations.