2014 Mercedes-Benz E350

The 2014 Mercedes-Benz E350 is a mid-size luxury sedan known for its blend of comfort, performance, and technology. The E350 features a 3.5L V6 engine producing 302 horsepower and 273 lb-ft of torque. Other engine options for the 2014 E-Class include the E250 BlueTEC diesel, E400, E550, and AMG variants. Transmission options are typically a 7-speed automatic. Owners generally appreciate the E350’s smooth ride, elegant interior, and advanced safety features. Common dislikes include higher maintenance costs and some reported electronic glitches.

Engine

3.5L V6

• Camshaft Adjuster Solenoid Failure
  • Description/Symptoms: Rough idling, check engine light illumination, and potential loss of power. Often caused by oil sludge or electrical malfunction of the solenoid.
  • Solution: Replacement of the faulty camshaft adjuster solenoid. Oil change may be required to reduce sludge build-up.
  • Estimated Cost to Fix: $200 - $500
  • Recalls: None Found
• Oil Leaks (Valve Cover Gaskets, Oil Filter Housing)
  • Description/Symptoms: Visible oil leaks on the engine, burning oil smell, low oil level warning.
  • Solution: Replacement of the leaking gaskets or oil filter housing.
  • Estimated Cost to Fix: $200 - $800+
  • Recalls: None Found

Transmission

7-Speed Automatic (7G-Tronic)

• Torque Converter Issues
  • Description/Symptoms: Shuddering during low-speed acceleration, particularly in lower gears. Delayed or harsh shifting.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $1,500 - $3,000
  • Recalls: None Found
• Valve Body Problems
  • Description/Symptoms: Erratic shifting, harsh engagement, or failure to shift into certain gears. Can also cause the transmission to get stuck in a gear.
  • Solution: Valve body replacement or rebuild.
  • Estimated Cost to Fix: $800 - $2,000
  • Recalls: None Found

Suspension

• Air Suspension Failure (if equipped)
  • Description/Symptoms: Vehicle sitting unevenly, compressor running constantly, suspension warning lights on the dashboard. Gradual sagging.
  • Solution: Replacement of the air struts, air compressor, or related components such as air lines.
  • Estimated Cost to Fix: $800 - $2,000+ per strut
  • Recalls: None Found
• Lower Control Arm Bushing Wear
  • Description/Symptoms: Clunking noises from the front suspension, especially when going over bumps. Poor handling and steering.
  • Solution: Replacement of the worn lower control arm bushings or the entire control arm.
  • Estimated Cost to Fix: $300 - $800
  • Recalls: None Found

Electrical

• COMAND System Malfunctions
  • Description/Symptoms: Freezing, reboots, or complete failure of the infotainment system. Navigation, radio, and other functions may be affected.
  • Solution: Software update, replacement of the COMAND unit.
  • Estimated Cost to Fix: $200 - $2,000+
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Car battery draining overnight or within a short period of time. Difficulty starting the vehicle.
  • Solution: Diagnose parasitic draw by testing each circuit. Common culprits include the seat control module, door control modules, or faulty relays.
  • Estimated Cost to Fix: $100 - $500+ depending on the source
  • Recalls: None Found
• Window Regulator Failure
  • Description/Symptoms: Window not going up or down. Grinding noises when operating the window.
  • Solution: Replacement of the window regulator.
  • Estimated Cost to Fix: $200 - $500
  • Recalls: None Found

Exterior

• Panorama Sunroof Issues (if equipped)
  • Description/Symptoms: Sunroof jamming, making excessive noise, or failing to open/close properly. Water leaks.
  • Solution: Lubrication of the tracks, repair or replacement of the sunroof mechanism.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found
• Door Lock Actuator Failure
  • Description/Symptoms: Door not locking or unlocking properly with the key fob or interior switch.
  • Solution: Replacement of the faulty door lock actuator.
  • Estimated Cost to Fix: $200 - $500
  • Recalls: None Found

Interior

• Seat Heater Malfunction
  • Description/Symptoms: Seat heater not working, overheating, or only working intermittently.
  • Solution: Replacement of the seat heater element or control module.
  • Estimated Cost to Fix: $200 - $800
  • Recalls: None Found
• Dashboard Cracking
  • Description/Symptoms: Cracks appearing on the dashboard surface, particularly in warmer climates.
  • Solution: Replacement of the dashboard.
  • Estimated Cost to Fix: $1,000 - $3,000+
  • Recalls: None Found

Summary

The 2014 Mercedes-Benz E350, while offering a luxurious driving experience, does have its share of potential issues. Engine-related problems like camshaft adjuster solenoid failure and oil leaks are common and can range from moderate to severe in terms of cost and potential damage if left unattended. Transmission problems can be costly, especially issues relating to the torque converter or valve body. Suspension and electrical gremlins can also contribute to the overall cost of ownership. While some issues are minor, others can be quite expensive to repair, making a thorough inspection and proactive maintenance crucial for prospective buyers and current owners alike.