2018 Mercedes-Benz GLE550e

The 2018 Mercedes-Benz GLE550e is a plug-in hybrid SUV that combines luxury with efficiency. It features a 3.0-liter V6 biturbo engine paired with an electric motor, producing a combined 436 horsepower and 479 lb-ft of torque. Other engine options for the 2018 GLE include a 3.5-liter V6, a 3.0-liter V6 biturbo, a 4.7-liter V8 biturbo, and a 5.5-liter V8 biturbo. All engines are paired with the 7G-TRONIC PLUS 7-speed automatic transmission. Owners often praise the GLE550e for its smooth ride, luxurious interior, and fuel economy in hybrid mode. Common dislikes include the complexity of the hybrid system, occasional glitches with the infotainment system, and higher maintenance costs compared to non-hybrid models.

Electric Motor

• Reduced Electric Range
  • Description/Symptoms: Owners report that the actual electric-only driving range is often significantly lower than the advertised range, especially in cold weather or when driving at higher speeds.
  • Solution: There is no definitive fix, as the range depends on driving conditions and battery health. Ensure the battery is properly charged and consider having the hybrid system inspected for any underlying issues.
  • Estimated Cost to Fix: Varies depending on the issue.

Battery

• Battery Degradation
  • Description/Symptoms: Over time, some owners have experienced battery degradation, leading to reduced electric range and overall performance.
  • Solution: Battery replacement, if warranted.
  • Estimated Cost to Fix:

Transmission

• 7G-TRONIC PLUS 7-Speed Automatic Transmission
  • Rough Shifting
    • Description/Symptoms: Some owners have reported experiencing rough or jerky shifting, particularly during downshifts or when transitioning between electric and gasoline power.
    • Solution: Check transmission fluid level and condition. A transmission flush and refill may resolve the issue. In some cases, valve body replacement or transmission rebuild may be necessary.
    • Estimated Cost to Fix: $300 - $5,000+

Suspension

• Air Suspension Issues (If Equipped)
  • Description/Symptoms: The optional air suspension can be prone to issues, including air leaks, compressor failures, and uneven ride height. Symptoms may include a sagging vehicle, a noisy compressor, or error messages on the dashboard.
  • Solution: Identify and repair air leaks. Replace the air compressor or air struts as needed.
  • Estimated Cost to Fix: $500 - $2,000+ per component.

Electrical

• Infotainment System Glitches
  • Description/Symptoms: The COMAND infotainment system can experience glitches, including freezing, lagging, and random reboots.
  • Solution: Software updates may resolve some issues. In some cases, the head unit may need to be replaced.
  • Estimated Cost to Fix: $0 (software update) - $1,500+ (head unit replacement)
• Charging System Problems
  • Description/Symptoms: Some owners have reported issues with the plug-in charging system, including failure to charge, slow charging, or error messages.
  • Solution: Check the charging cable, charging port, and charging system components. Faulty components may need to be replaced.
  • Estimated Cost to Fix: $100 - $1,000+

Interior

• Malfunctioning Seat Adjustment Motors
  • Description/Symptoms: Electric seat adjustment motors may fail, causing the seat to be stuck in a certain position or making unusual noises.
  • Solution: Replace the faulty seat motor.
  • Estimated Cost to Fix: $200 - $800+ per motor.
• Sunroof Issues
  • Description/Symptoms: Sunroofs getting stuck or making grinding noises when opening or closing.
  • Solution: Cleaning the sunroof tracks can often resolve the issue. In more severe cases, the sunroof motor or complete assembly may need to be replaced.
  • Estimated Cost to Fix: $100 - $1,200+

Recalls:

• 2018070003 - Electrical System, Hybrid Propulsion System

Summary:

The 2018 Mercedes-Benz GLE550e offers a blend of luxury and efficiency but can be prone to certain issues. The most common issues involve the electrical system, air suspension (if equipped), and infotainment system, which can lead to a range of repair costs. Potential buyers should be aware of these issues and factor in the potential for higher maintenance costs.