2018 Mercedes-Benz GLS63 AMG

Introduction:

The 2018 Mercedes-Benz GLS63 AMG is a high-performance luxury SUV powered by a twin-turbo 5.5L V8 engine producing 577 horsepower and 561 lb-ft of torque. It comes standard with a 9-speed automatic transmission and all-wheel drive. Critics praise the GLS63 AMG for its potent engine, luxurious interior, and impressive handling. However, owners have reported various issues with this vehicle.

Engine

5.5L V8 Biturbo

• Intake Manifold Failure:
  • Description/Symptoms: Cracking or deformation of the intake manifold, leading to air leaks, rough idling, and reduced power.
  • Solution: Replace the intake manifold.
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found
• Turbocharger Failure:
  • Description/Symptoms: Malfunctioning or seized turbocharger, resulting in reduced power, whistling noises, and increased oil consumption.
  • Solution: Replace the affected turbocharger.
  • Estimated Cost to Fix: $2,500 - $3,500+ per turbocharger
  • Recalls: None Found

Transmission

9-Speed Automatic

• Shift Flare:
  • Description/Symptoms: Harsh or delayed gear shifts, especially during acceleration or deceleration.
  • Solution: Update transmission software or replace the valve body.
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found
• Transmission Slipping:
  • Description/Symptoms: Loss of power or hesitation during acceleration, as if the transmission is slipping out of gear.
  • Solution: Replace transmission components such as clutches, torque converter, or solenoids.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

No Issues Found

Electrical

• Battery Drain:
  • Description/Symptoms: Rapid battery discharge when the vehicle is parked, leading to difficulty starting the engine.
  • Solution: Diagnose the source of the parasitic drain (e.g., faulty alternator, parasitic components).
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found
• Electrical Control Module Failure:
  • Description/Symptoms: Malfunctioning control module(s) causing various electrical issues, including loss of instrument panel display, power window failure, or inoperative safety systems.
  • Solution: Replace or repair the affected control module(s).
  • Estimated Cost to Fix: $500 - $2,000+ per module
  • Recalls: None Found

Exterior

No Issues Found

Interior

• Sunroof Panel Cracking:
  • Description/Symptoms: Cracks or breaks in the panoramic sunroof panel, allowing water or wind noise into the cabin.
  • Solution: Replace the sunroof panel.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found
• Interior Trim Rattle:
  • Description/Symptoms: Loose or vibrating interior trim pieces, causing rattling or squeaking noises while driving.
  • Solution: Tighten or replace loose trim components.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Summary:

The Mercedes-Benz GLS63 AMG is a powerful and capable luxury SUV, but some owners have experienced issues with its engine, transmission, electrical system, and interior. While some of these problems are relatively minor and inexpensive to fix, others can be costly and time-consuming to resolve. It is important for potential buyers to be aware of these issues and factor them into their decision-making process.