2021 BMW M8 Gran Coupe

The 2021 BMW M8 Gran Coupe is a high-performance luxury four-door coupe offering a blend of exhilarating power and sophisticated comfort. It features a potent 4.4-liter TwinPower Turbo V8 engine. The standard M8 Gran Coupe produces 600 horsepower and 553 lb-ft of torque, while the Competition version bumps the power up to 617 horsepower. Both versions are equipped with an 8-speed M Steptronic automatic transmission. Owners generally praise the M8 Gran Coupe for its breathtaking performance, luxurious interior, and sporty handling. Common criticisms include its high price, firm ride (especially with the Competition package), and complex infotainment system. Below are specific issues and complaints reported by owners of the 2021 BMW M8 Gran Coupe.

Engine

4.4L TwinPower Turbo V8

• Oil Leaks
  • Description/Symptoms: Some owners have reported oil leaks originating from various points on the engine, including the valve cover gaskets and oil pan gasket. Symptoms include visible oil drips under the car and a burning oil smell.
  • Solution: Replacing the leaking gaskets or seals is the typical fix.
  • 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 have been reported around the coolant expansion tank and hose connections. Symptoms include low coolant levels, overheating, and visible coolant puddles.
  • Solution: Replacing the leaking components (expansion tank, hoses, or clamps).
  • Estimated Cost to Fix: $200 - $800+ depending on the specific part and labor.
  • Recalls: None Found

Transmission

8-Speed M Steptronic Automatic

• Rough Shifting
  • Description/Symptoms: Some owners have reported occasional rough or jerky shifting, particularly during downshifts or when using the paddle shifters. This may be more pronounced in colder weather.
  • Solution: In some cases, a software update or transmission adaptation reset may resolve the issue. In more severe cases, valve body replacement or transmission rebuild may be necessary.
  • Estimated Cost to Fix: $100 (software update) - $5,000+ (transmission rebuild).
  • Recalls: None Found

Suspension

• Adaptive Suspension Malfunctions
  • Description/Symptoms: The adaptive suspension (standard on the M8 Gran Coupe) may experience malfunctions, leading to error messages on the dashboard and a degraded ride quality.
  • Solution: Diagnosis of the specific sensor or component failure. Replacement of the affected parts (e.g., shock absorbers, sensors, control module).
  • Estimated Cost to Fix: $500 - $3,000+ depending on the part needing replacement and labor.
  • Recalls: None Found

Electrical

• Infotainment System Glitches
  • Description/Symptoms: The iDrive infotainment system can sometimes experience glitches, such as screen freezes, unresponsive controls, and Bluetooth connectivity issues.
  • Solution: A software update often resolves these issues. In some cases, a system reset or component replacement may be necessary.
  • Estimated Cost to Fix: $0 (software update) - $1,500+ (component replacement).
  • Recalls: None Found
• Sensor Failures (Parking Sensors, etc.)
  • Description/Symptoms: Failures of various sensors, such as parking sensors or tire pressure monitoring sensors (TPMS), have been reported.
  • Solution: Replacement of the faulty sensor.
  • Estimated Cost to Fix: $150 - $500+ per sensor, including labor.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Rattles and Squeaks
  • Description/Symptoms: Some owners have reported rattles and squeaks emanating from the interior trim, particularly around the dashboard, door panels, and rear shelf.
  • Solution: Identifying and securing the loose trim pieces. Often involves adding felt or foam padding to dampen vibrations.
  • Estimated Cost to Fix: $100 - $500+ depending on the severity and labor.
  • Recalls: None Found

Summary

The 2021 BMW M8 Gran Coupe, while an impressive performance machine, is not without its potential issues. The reported issues range from relatively minor electrical glitches and interior rattles to more concerning engine oil leaks and transmission problems. The cost to fix these issues can vary significantly depending on the severity and complexity, with some repairs potentially exceeding several thousand dollars. Owners should be aware of these potential problems and thoroughly inspect any used M8 Gran Coupe before purchase. A pre-purchase inspection by a qualified BMW technician is highly recommended.