2017 Mercedes-Benz GLS63 AMG

The 2017 Mercedes-Benz GLS63 AMG is a high-performance SUV that blends luxury with exhilarating power. Other engine options available for the 2017 GLS lineup include the GLS350d, GLS450, and GLS550, each offering varying levels of performance and features. The GLS63 AMG boasts a handcrafted 5.5-liter biturbo V8 engine producing 577 horsepower and 561 lb-ft of torque. All GLS models in 2017 are equipped with a 9G-TRONIC automatic transmission. Owners often praise the GLS63 for its powerful engine, luxurious interior, and comfortable ride. However, some common complaints revolve around the high maintenance costs, complex electronics, and occasional reliability concerns.

Engine

5.5L Biturbo V8

• Oil Leaks from Valve Cover Gaskets and Oil Filter Housing
  • Description/Symptoms: Visible oil leaks on the engine, burning oil smell, low oil level warning light.
  • Solution: Replacement of valve cover gaskets and/or oil filter housing gasket.
  • Estimated Cost to Fix: $500 - $1500+ (depending on the extent of the leak and labor rates)
  • Recalls: None Found
• Turbocharger Failure
  • Description/Symptoms: Loss of power, whistling or grinding noises from the engine, check engine light.
  • Solution: Replacement of the faulty turbocharger(s).
  • Estimated Cost to Fix: $3000 - $6000+ (as replacement often involves both turbos)
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Sweet-smelling coolant leaks, overheating, low coolant level warning light.
  • Solution: Identify and repair the source of the leak (hoses, water pump, thermostat housing, etc.).
  • Estimated Cost to Fix: $200 - $1000+ (depending on the location of the leak)
  • Recalls: None Found

Transmission

9G-TRONIC Automatic Transmission

• Rough Shifting or Hesitation
  • Description/Symptoms: Harsh or delayed shifts, particularly between certain gears. Can also be noticeable hesitation when accelerating.
  • Solution: Software update of the transmission control module (TCM). In some cases, transmission fluid flush or valve body replacement.
  • Estimated Cost to Fix: $200 - $300 (software update), $500 - $2000+ (fluid flush or valve body replacement)
  • Recalls: None Found
• Torque Converter Issues
  • Description/Symptoms: Shuddering or vibration at low speeds, especially under light acceleration.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $1500 - $3000+
  • Recalls: None Found

Suspension

• Air Suspension Failure (Airmatic)
  • Description/Symptoms: Vehicle sagging on one or more corners, ride height malfunctions, “Visit Workshop” warning light.
  • Solution: Replacement of faulty air struts, air compressor, or valve block. Diagnose the system for leaks.
  • Estimated Cost to Fix: $1000 - $3000+ (per strut or compressor)
  • Recalls: None Found
• Air Strut Leaks
  • Description/Symptoms: Hisssssing sound from the struts, sagging of the vehicle.
  • Solution: Replace the faulty strut
  • Estimated Cost to Fix: $1000 - $3000+ (per strut or compressor)
  • Recalls: None Found

Electrical

• Battery Drain Issues
  • Description/Symptoms: Dead battery, difficulty starting the vehicle, frequent jump starts required.
  • Solution: Diagnose and repair parasitic drain (faulty module, accessory, etc.). Replace battery if necessary.
  • Estimated Cost to Fix: $100 - $500+ (diagnosis and repair), $200 - $500+ (battery replacement)
  • Recalls: None Found
• Malfunctioning Sensors (Oxygen Sensors, Crankshaft Position Sensor, etc.)
  • Description/Symptoms: Check engine light, poor engine performance, rough idling.
  • Solution: Replacement of the faulty sensor.
  • Estimated Cost to Fix: $200 - $500+ (per sensor)
  • Recalls: None Found
• COMAND System Issues
  • Description/Symptoms: System freezes, unresponsive touchscreen, navigation malfunctions, Bluetooth connectivity problems.
  • Solution: Software update, replacement of the COMAND unit.
  • Estimated Cost to Fix: $100 - $300 (software update), $1000 - $3000+ (COMAND unit replacement)
  • Recalls: None Found

Exterior

• Adaptive Headlight Malfunctions
  • Description/Symptoms: Headlights not leveling properly, error messages related to headlight function.
  • Solution: Diagnosis and repair of headlight control module or replacement of headlight assembly.
  • Estimated Cost to Fix: $500 - $2000+ (depending on the issue)
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: Sunroof getting stuck, difficulty opening or closing, unusual noises.
  • Solution: Lubrication, adjustment, or replacement of sunroof components.
  • Estimated Cost to Fix: $200 - $1000+
  • Recalls: None Found

Interior

• Seat Heater/Cooler Malfunctions
  • Description/Symptoms: Seat heaters or coolers not working, inconsistent heating/cooling.
  • Solution: Replacement of heating/cooling element or control module.
  • Estimated Cost to Fix: $300 - $1000+ (per seat)
  • Recalls: None Found
• Cracked Dashboard
  • Description/Symptoms: Cracks forming on the dashboard, especially in areas exposed to direct sunlight.
  • Solution: Replacement of the dashboard.
  • Estimated Cost to Fix: $1000 - $3000+
  • Recalls: None Found

Summary

The 2017 Mercedes-Benz GLS63 AMG, while offering impressive performance and luxury, can be prone to a range of issues. Engine problems such as oil leaks and turbocharger failures can be costly, as can suspension issues related to the airmatic system. Electrical gremlins are also common, leading to frustrating malfunctions. The severity of these issues ranges from minor inconveniences to major repairs. While some problems are relatively inexpensive to fix, others can easily exceed several thousand dollars, making it crucial for prospective buyers to conduct thorough inspections and consider extended warranties.