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2013 Mercedes-Benz GL500

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By Research the Car 5 min read

The 2013 Mercedes-Benz GL500, known as the GL550 in some markets, is a full-size luxury SUV that offers a blend of comfort, performance, and sophistication. The GL500 is equipped with a 4.7-liter twin-turbo V8 engine producing 429 horsepower and 516 lb-ft of torque. Other engine options available on the GL-Class for 2013 include a 3.0-liter V6 diesel (GL350 BlueTEC) and a 3.5-liter V6 gasoline engine (GL350). All engines are paired with a 7-speed automatic transmission (7G-TRONIC). Owners typically praise the GL500 for its spaciousness, luxurious interior, powerful engine, and comfortable ride. Common complaints include high maintenance costs, complex electronics that can be prone to issues, and lower fuel economy compared to other SUVs in its class.

Engine

4.7L Twin-Turbo V8 (M278)

  • Oil Leaks
    • Description/Symptoms: Oil leaks can occur from various points, including the valve cover gaskets, oil filter housing, and timing chain cover. Symptoms include visible oil leaks, oil spots under the vehicle, and a burning oil smell.
    • Solution: Replace the leaking gasket or component. Thoroughly clean the affected area after the repair.
    • Estimated Cost to Fix: $200 - $1500+ depending on the location and complexity of the leak.
    • Recalls: None Found
  • Turbocharger Issues
    • Description/Symptoms: Whining noise from the turbochargers, loss of power, check engine light illumination. Can be caused by oil starvation, bearing failure, or wastegate malfunction.
    • Solution: Replace or rebuild the turbocharger. Investigate and address the root cause of failure (e.g., oil supply issues).
    • Estimated Cost to Fix: $2,500 - $5,000+ per turbocharger depending on whether it is replaced or rebuilt and labor costs.
    • Recalls: None Found
  • Direct Injection Issues
    • Description/Symptoms: Carbon buildup on intake valves due to direct injection can cause rough idling, misfires, and reduced performance.
    • Solution: Perform an intake valve cleaning service, such as walnut blasting, to remove carbon deposits.
    • Estimated Cost to Fix: $500 - $1,000+
    • Recalls: None Found

Transmission

7G-TRONIC (722.9)

  • Torque Converter Issues
    • Description/Symptoms: Shuddering or vibration during acceleration, especially at lower speeds. Can also cause stalling or erratic shifting.
    • Solution: Replace the torque converter. Ensure proper transmission fluid flush and fill with the correct fluid type.
    • Estimated Cost to Fix: $1,500 - $3,000+
    • Recalls: None Found
  • Valve Body Malfunction
    • Description/Symptoms: Harsh or delayed shifting, slipping between gears, or failure to shift. Can trigger a check engine light.
    • Solution: Replace or rebuild the valve body. In some cases, individual solenoids within the valve body can be replaced.
    • Estimated Cost to Fix: $800 - $2,500+ depending on the complexity of the repair.
    • Recalls: None Found

Suspension

  • Airmatic Suspension Failure
    • Description/Symptoms: Vehicle sagging on one or more corners, failure to maintain ride height, “Vehicle Too Low” warning light. Often caused by leaks in the air springs, compressor failure, or valve block issues.
    • Solution: Replace the leaking air spring(s), replace the air suspension compressor, or replace/rebuild the valve block.
    • Estimated Cost to Fix: $800 - $2,000+ per air spring, $500 - $1,500+ for the compressor, $300-$800+ for the valve block, depending on if OEM or aftermarket parts are used.
    • Recalls: None Found
  • Air Compressor Relay Failure
    • Description/Symptoms: The compressor runs constantly causing it to burn out, or the compressor does not run at all.
    • Solution: Replace the relay and the burnt out compressor.
    • Estimated Cost to Fix: $60 - $1,500+
    • Recalls: None Found

Electrical

  • Battery Drain Issues
    • Description/Symptoms: Dead battery, especially after sitting for a short period. Can be caused by a parasitic drain from faulty electronics or a failing battery.
    • Solution: Diagnose and repair the parasitic drain. Replace the battery if it is failing a load test.
    • Estimated Cost to Fix: $100 - $500+ for diagnosis, $200 - $500+ for a new battery, drain repairs vary.
    • Recalls: None Found
  • Navigation/Infotainment System Malfunctions
    • Description/Symptoms: System freezing, screen going blank, failure to recognize inputs, or navigation errors.
    • Solution: Software updates or replacement of the head unit.
    • Estimated Cost to Fix: $100 - $200 for software updates, $500 - $2,000+ for head unit replacement depending on OEM vs aftermarket.
    • Recalls: None Found

Exterior

  • Sunroof Issues
    • Description/Symptoms: The sunroof gets stuck, makes a loud noise when operating, or refuses to open or close.
    • Solution: Clean and lubricate the sunroof tracks. If the motor is faulty or the linkage is damaged, replace the affected parts.
    • Estimated Cost to Fix: $100 - $800+ depending on the cause.
    • Recalls: None Found

Interior

  • Dashboard Cracking
    • Description/Symptoms: Cracking on the dashboard surface, particularly in areas exposed to sunlight.
    • Solution: Replace the dashboard or use a dashboard cover to conceal the cracks.
    • Estimated Cost to Fix: $1,500 - $3,000+ for replacement, $50 - $200+ for a cover.
    • Recalls: None Found
  • Seat Motor Failure
    • Description/Symptoms: The power seats do not adjust, move slowly, or make grinding noises during operation.
    • Solution: Replace the faulty seat motor or the entire seat assembly if necessary.
    • Estimated Cost to Fix: $300 - $1,000+ depending on the motor and labor.
    • Recalls: None Found

Summary

The 2013 Mercedes-Benz GL500, with its powerful 4.7L twin-turbo V8 engine, offers a luxurious driving experience, but it’s not without its potential issues. Owners should be aware of possible oil leaks, turbocharger problems, and carbon buildup in the engine. Transmission issues, particularly with the torque converter and valve body, are also potential concerns. The Airmatic suspension is known for air leaks and compressor failures, leading to sagging and ride height problems. Electrical issues, such as battery drain and infotainment malfunctions, can also arise. Interior concerns include dashboard cracking, and seat motor failure. Many of these issues can be costly to repair, particularly the engine and suspension components. Potential buyers should have the vehicle inspected by a qualified mechanic before purchasing and budget for potential repairs.

Mercedes-Benz, GL500
Mercedes-Benz GL500 2013
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