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2019 BMW M6 Gran Coupe

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By Research the Car 5 min read

The 2019 BMW M6 Gran Coupe is a high-performance luxury sedan known for its blend of power and practicality. Powered by a 4.4-liter TwinPower Turbo V8 engine, it delivers a staggering 560 horsepower and 500 lb-ft of torque. While the M6 Gran Coupe was only offered with the 4.4L TwinPower Turbo V8, other BMW models may offer the same engine in different power levels. The only transmission offered was a 7-speed dual-clutch automatic transmission (DCT). Owners often praise the M6 Gran Coupe for its exhilarating performance, luxurious interior, and distinctive styling. However, some common criticisms include its high running costs, firm ride, and potential for expensive repairs.

Engine

4.4L TwinPower Turbo V8

  • Oil Leaks
    • Description/Symptoms: Oil leaks are a fairly common issue in the 4.4L V8, especially as the car ages. These leaks can originate from various locations, including the valve cover gaskets, oil filter housing gasket, and the oil pan gasket. Symptoms include visible oil leaks under the car, the smell of burning oil, and low oil level warnings.
    • Solution: Replacing the faulty gasket(s) and cleaning the affected areas. A smoke test can help identify the source of the leak.
    • Estimated Cost to Fix: $200 - $1500+ depending on the leak location and labor costs.
    • Recalls: None Found
  • VANOS System Issues
    • Description/Symptoms: The VANOS (Variable Nockenwellen Steuerung, or Variable Camshaft Timing) system is crucial for optimal engine performance. Issues with the VANOS system can manifest as rough idling, decreased power, poor fuel economy, and engine misfires. Error codes related to the VANOS system will be stored in the ECU.
    • Solution: Diagnosis often involves checking the VANOS solenoids, oil pressure, and camshaft sensors. Replacement of faulty solenoids, cleaning of the VANOS system, or replacement of timing chain components may be necessary.
    • Estimated Cost to Fix: $500 - $2000+ depending on the complexity of the repair.
    • Recalls: None Found
  • Coolant Leaks
    • Description/Symptoms: Coolant leaks can occur from various points in the cooling system, including the water pump, thermostat housing, radiator hoses, and the radiator itself. Signs of a coolant leak include low coolant levels, overheating, and visible coolant puddles under the vehicle.
    • Solution: Identifying the source of the leak and replacing the faulty component. A pressure test of the cooling system can help pinpoint the leak.
    • Estimated Cost to Fix: $200 - $1000+ depending on the component that needs to be replaced.
    • Recalls: None Found

Transmission

7-Speed Dual-Clutch Transmission (DCT)

  • Rough Shifting/Hesitation
    • Description/Symptoms: Some owners have reported experiencing rough or jerky shifting, particularly at lower speeds. Hesitation during gear changes or a delay in engagement can also occur. This is sometimes associated with the DCT’s mechatronic unit.
    • Solution: A software update for the transmission control unit (TCU) may resolve some issues. In more severe cases, repair or replacement of the mechatronic unit may be required. Fluid flush/service can also help.
    • Estimated Cost to Fix: $300 (fluid flush) - $5000+ (mechatronic unit replacement).
    • Recalls: None Found
  • Transmission Failure
    • Description/Symptoms: In rare instances, complete transmission failure has been reported. Symptoms include inability to shift gears, loud noises coming from the transmission, and a complete loss of power.
    • Solution: Transmission replacement or rebuild.
    • Estimated Cost to Fix: $7000+
    • Recalls: None Found

Suspension

  • Adaptive Suspension Malfunctions (if equipped)
    • Description/Symptoms: If the vehicle is equipped with adaptive suspension, malfunctions can occur, resulting in a harsh ride, uneven handling, and error messages on the dashboard. Issues can stem from faulty sensors, control modules, or the shock absorbers themselves.
    • Solution: Diagnosis involves checking the sensors and control module. Replacement of faulty components, including shock absorbers, may be required.
    • Estimated Cost to Fix: $500 - $3000+ depending on the failed component.
    • Recalls: None Found

Electrical

  • Battery Drain
    • Description/Symptoms: Excessive battery drain can occur, leading to difficulty starting the car, especially after it has been sitting for a few days. This can be caused by a parasitic draw from a faulty module or accessory.
    • Solution: Identifying the source of the parasitic draw and repairing or replacing the faulty component.
    • Estimated Cost to Fix: $100 - $1000+ depending on the source of the drain.
    • Recalls: None Found
  • iDrive System Issues
    • Description/Symptoms: The iDrive infotainment system can experience glitches, freezes, and software malfunctions. Issues can range from minor annoyances to complete system failure.
    • Solution: A software update may resolve some issues. In more severe cases, replacement of the iDrive module may be necessary.
    • Estimated Cost to Fix: $100 (software update) - $1500+ (module replacement).
    • Recalls: None Found
  • Sensor Malfunctions
    • Description/Symptoms: Various sensors throughout the vehicle can fail, leading to warning lights on the dashboard and potentially affecting vehicle performance. Common sensor issues include those related to the ABS, stability control, and tire pressure monitoring systems (TPMS).
    • Solution: Diagnosing the faulty sensor and replacing it.
    • Estimated Cost to Fix: $100 - $500+ per sensor replacement.
    • Recalls: None Found

Exterior

  • No Issues Found

Interior

  • Leather Dashboard Shrinking/Warping
    • Description/Symptoms: On M6 Gran Coupes with leather dashboards, some owners have reported shrinking or warping of the leather, particularly in areas exposed to direct sunlight. This can result in unsightly gaps and an uneven appearance.
    • Solution: Dashboard replacement or reupholstering.
    • Estimated Cost to Fix: $1000 - $5000+
    • Recalls: None Found
  • Sunroof Issues
    • Description/Symptoms: Sunroofs can experience various issues, including failing to open or close properly, rattling noises, and leaks.
    • Solution: Repair or replacement of the sunroof motor, tracks, or seals.
    • Estimated Cost to Fix: $200 - $1000+
    • Recalls: None Found

Summary

The 2019 BMW M6 Gran Coupe, while a thrilling performance vehicle, does present some potential ownership challenges. Engine oil leaks and VANOS issues are the most significant concerns. Transmission issues with rough shifting should be addressed as soon as possible to avoid a much more costly repair later. Electrical issues with battery drain and infotainment issues can also arise. Interior trim issues with the leather dashboard is also very costly to fix. While some issues are relatively minor, others, such as transmission or engine failure, can result in substantial repair bills, making thorough inspection and preventative maintenance crucial for owners.

BMW, M6 Gran Coupe
BMW M6 Gran Coupe 2019
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