2021 Mercedes-Benz E350e

The 2021 Mercedes-Benz E350e is a plug-in hybrid variant of the popular E-Class sedan. It combines a 2.0-liter turbocharged inline-4 engine with an electric motor, producing a combined 315 horsepower and 516 lb-ft of torque. Other engine options for the 2021 E-Class include a 2.0L Turbo I4, 3.0L Turbo I6, and a 4.0L Turbo V8, all paired with a 9-speed automatic transmission. Owners often praise the E350e for its luxurious interior, comfortable ride, and fuel efficiency in hybrid mode. Common criticisms include the smaller trunk space due to the battery pack and the complexity of the infotainment system.

Electric Motor

Electric Motor

• Electric Motor Failure
  • Description/Symptoms: Complete failure of the electric motor, resulting in the inability to drive in electric mode. The car might display error messages related to the hybrid system.
  • Solution: Replacement of the electric motor.
  • Estimated Cost to Fix: $7,000 - $10,000+
  • Recalls: None Found
• Battery Pack Degradation
  • Description/Symptoms: Reduced range in electric mode, faster depletion of the battery, and potential error messages related to the battery pack.
  • Solution: Battery pack replacement or individual module replacement, depending on the severity.
  • Estimated Cost to Fix: $5,000 - $15,000+
  • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic

• Harsh Shifting/Hesitation
  • Description/Symptoms: Noticeable harshness during gear changes, especially at lower speeds. Hesitation or delays when accelerating.
  • Solution: Software update of the transmission control module (TCM). If the issue persists, valve body replacement might be necessary.
  • Estimated Cost to Fix: $200 - $500+ for software updates; $1,500 - $3,000+ for valve body replacement.
  • Recalls: None Found

Electrical

• MBUX Infotainment System Issues
  • Description/Symptoms: System freezes, slow response times, Bluetooth connectivity problems, navigation malfunctions, and screen blackouts.
  • Solution: Software updates are frequently released by Mercedes-Benz to address these issues. In some cases, replacement of the MBUX module might be necessary.
  • Estimated Cost to Fix: $0 for software updates if under warranty or recall; $1,000 - $3,000+ for module replacement.
  • Recalls: None Found
• 12V Battery Drain
  • Description/Symptoms: The 12V battery drains quickly, especially if the car is not driven frequently. This can lead to starting problems or complete electrical failure.
  • Solution: Identification and repair of parasitic draws. In some cases, battery replacement might be necessary.
  • Estimated Cost to Fix: $100 - $500+ for diagnosing and fixing parasitic draws; $200 - $400 for battery replacement.
  • Recalls: None Found

Interior

• Sunroof Malfunction
  • Description/Symptoms: Sunroof fails to open or close properly, makes excessive noise, or gets stuck.
  • Solution: Repair or replacement of the sunroof motor, track, or other components.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found

Exterior

• Sensor Malfunctions (Parking Sensors, Blind Spot Monitoring)
  • Description/Symptoms: Parking sensors give false readings or fail to detect objects. Blind spot monitoring system malfunctions or provides incorrect warnings.
  • Solution: Cleaning, recalibration, or replacement of the affected sensors.
  • Estimated Cost to Fix: $200 - $800+ per sensor.
  • Recalls: None Found

Summary The 2021 Mercedes-Benz E350e has a variety of potential issues, ranging from minor infotainment glitches to more serious problems like electric motor failure and battery degradation. Electrical issues, particularly with the MBUX system and 12V battery, are relatively common and can be frustrating. While some issues can be resolved with software updates, others may require costly repairs. It’s important to note that the cost of repairing hybrid-specific components such as the electric motor and battery pack can be substantial, which owners should consider when purchasing the vehicle.