2021 Mercedes-Benz GLS63 AMG

The 2021 Mercedes-Benz GLS63 AMG is a high-performance SUV that blends luxury with impressive power. It comes standard with a handcrafted AMG 4.0L biturbo V8 engine producing 603 horsepower and 627 lb-ft of torque, paired with an AMG SPEEDSHIFT TCT 9-speed automatic transmission. Drivers appreciate the GLS63 AMG for its powerful engine, luxurious interior, and advanced technology. Common complaints include its high price, firm ride, and complex infotainment system.

Engine

AMG 4.0L Biturbo V8

• Turbocharger Failure
  • Description/Symptoms: Whining noise from the engine, loss of power, check engine light.
  • Solution: Replacement of the failed turbocharger.
  • Estimated Cost to Fix: $5,000 - $8,000+
  • Recalls: None Found
• Oil Leaks
  • Description/Symptoms: Oil spots under the vehicle, burning oil smell, low oil level warning.
  • Solution: Replacement of leaking gaskets and seals, such as valve cover gaskets or oil pan gasket.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found

Transmission

AMG SPEEDSHIFT TCT 9-Speed Automatic

• Rough or Delayed Shifting
  • Description/Symptoms: Harsh shifts, hesitation during acceleration, transmission slipping.
  • Solution: Transmission fluid flush, software update, or valve body replacement.
  • Estimated Cost to Fix: $300 - $4,000+
  • Recalls: None Found

Suspension

• Air Suspension Failure
  • Description/Symptoms: Vehicle sagging on one side, error message on the dashboard, compressor running constantly.
  • Solution: Replacement of the air spring, compressor, or valve block.
  • Estimated Cost to Fix: $1,500 - $4,000+
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: Touchscreen unresponsive, system restarts, loss of functionality.
  • Solution: Software update, replacement of the infotainment system module.
  • Estimated Cost to Fix: $300 - $2,000+
  • Recalls: None Found
• Sensor Malfunctions (Parking Sensors, Blind Spot Monitoring)
  • Description/Symptoms: False alarms, system not functioning, error messages.
  • Solution: Replacement of the faulty sensor.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Car not starting, needing jump starts, warning lights on the dashboard.
  • Solution: Replacement of the battery, fixing parasitic drain from a faulty module.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Malfunctioning Seat Controls
  • Description/Symptoms: Seat not adjusting, buttons not working, motors making noise.
  • Solution: Repair or replacement of the seat control module or motor.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found

Summary

The 2021 Mercedes-Benz GLS63 AMG can have some notable issues, particularly related to the engine (turbocharger failures and oil leaks), transmission (rough shifting), suspension (air suspension failure), and electrical systems (infotainment and sensors). Repairs can be costly, especially for the turbochargers and air suspension. While the GLS63 AMG offers a luxurious and powerful driving experience, potential buyers should be aware of these potential maintenance concerns.