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2017 Mercedes-Benz E300

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By Research the Car 4 min read

The 2017 Mercedes-Benz E300 is a mid-size luxury sedan that offers a blend of comfort, technology, and performance. The E300 is equipped with a 2.0L turbocharged inline-4 engine producing 241 horsepower and 273 lb-ft of torque, paired with a 9G-TRONIC 9-speed automatic transmission. Other engine options available for the 2017 E-Class lineup include a V6, a V8, and a diesel. Owners appreciate the E300’s refined interior, smooth ride, and advanced safety features. However, some common complaints include electrical glitches, issues with the driver assistance systems, and occasional problems with the engine and transmission.

Engine

2.0L Turbocharged Inline-4

  • Engine Misfires
    • Description/Symptoms: Engine misfires, rough idling, check engine light illumination. Often caused by faulty ignition coils or spark plugs.
    • Solution: Replace faulty ignition coils and/or spark plugs.
    • Estimated Cost to Fix: $200 - $500+
    • Recalls: None Found
  • High-Pressure Fuel Pump Failure
    • Description/Symptoms: Difficulty starting, engine stalling, reduced performance, check engine light. The high-pressure fuel pump can fail due to internal wear or fuel contamination.
    • Solution: Replace the high-pressure fuel pump.
    • Estimated Cost to Fix: $800 - $1500+
    • Recalls: None Found
  • Oil Leaks
    • Description/Symptoms: Oil spots under the car, burning oil smell, low oil level. Common leak locations include the valve cover gasket, oil filter housing, and rear main seal.
    • Solution: Replace the leaking gasket or seal.
    • Estimated Cost to Fix: $200 - $1000+ depending on the location of the leak.
    • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic

  • Rough Shifting
    • Description/Symptoms: Harsh or jerky shifting between gears, particularly at lower speeds. May be accompanied by a clunking noise. Can be caused by low transmission fluid, valve body issues, or software problems.
    • Solution: Check and refill transmission fluid, perform a transmission adaptation reset, or replace the valve body. A software update may also resolve the issue.
    • Estimated Cost to Fix: $100 (fluid top-up) - $2500+ (valve body replacement)
    • Recalls: None Found
  • Delayed Engagement
    • Description/Symptoms: A noticeable delay when shifting from Park or Neutral into Drive or Reverse. This can be caused by internal wear within the transmission.
    • Solution: A full transmission rebuild or replacement.
    • Estimated Cost to Fix: $4000 - $7000+
    • Recalls: None Found

Suspension

  • Air Suspension Problems (If Equipped)
    • Description/Symptoms: Vehicle sagging on one side, the air compressor running excessively, error messages on the dashboard. These issues can be caused by leaks in the air struts or faulty air compressor.
    • Solution: Replace leaking air struts and/or air compressor.
    • Estimated Cost to Fix: $800 - $2000+ per strut, $500-$1500+ for compressor.
    • Recalls: None Found
  • Suspension Noises
    • Description/Symptoms: Clunking or rattling noises coming from the suspension, especially when going over bumps. Common causes include worn sway bar links, ball joints, or control arm bushings.
    • Solution: Replace worn suspension components.
    • Estimated Cost to Fix: $200 - $800+ per component.
    • Recalls: None Found

Electrical

  • Malfunctioning Driver Assistance Systems
    • Description/Symptoms: Error messages related to features like lane keeping assist, blind spot monitoring, or adaptive cruise control. Sensors can be sensitive and prone to malfunction.
    • Solution: Diagnose the faulty sensor or module and replace it. Recalibration may also be required.
    • Estimated Cost to Fix: $300 - $1500+ depending on the component.
    • Recalls: None Found
  • Infotainment System Issues
    • Description/Symptoms: Freezing, crashing, or slow response times. The COMAND system can experience software glitches.
    • Solution: Software update or replacement of the COMAND unit.
    • Estimated Cost to Fix: $100 (software update) - $2000+ (unit replacement).
    • Recalls: None Found
  • Battery Drain
    • Description/Symptoms: Dead battery, difficulty starting the car. Excessive drain may be caused by a faulty module or accessory that isn’t shutting down properly.
    • Solution: Diagnose and repair the source of the parasitic drain.
    • Estimated Cost to Fix: $100 - $500+ depending on the cause.
    • Recalls: None Found

Exterior

  • Panoramic Sunroof Issues
    • Description/Symptoms: Squeaking noises when opening or closing, difficulty opening or closing completely, water leaks.
    • Solution: Lubricate the sunroof tracks, repair or replace the sunroof motor, or reseal the sunroof assembly.
    • Estimated Cost to Fix: $100 - $1500+ depending on the severity.
    • Recalls: None Found
  • Door Lock Actuator Failure
    • Description/Symptoms: Door not locking or unlocking properly.
    • Solution: Door lock actuator replacement
    • Estimated Cost to Fix: $150 - $450+ depending on the door.
    • Recalls: None Found

Interior

  • Seat Heater Malfunction
    • Description/Symptoms: Seat heater not working, overheating, or intermittent operation.
    • Solution: Replace the heating element or control module.
    • Estimated Cost to Fix: $200 - $800+ per seat.
    • Recalls: None Found

Summary

The 2017 Mercedes-Benz E300 can experience a range of issues, from relatively minor electrical glitches to more significant problems with the engine, transmission, and suspension. Electrical problems and malfunctioning driver-assistance systems seem to be fairly common complaints. The cost of repairs can vary widely, from a few hundred dollars for minor fixes to several thousand dollars for major engine or transmission work. Overall, while the E300 offers a luxurious driving experience, potential buyers should be aware of these potential issues and factor in the cost of maintenance and repairs.

Mercedes-Benz, E300
Mercedes-Benz E300 2017
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