2019 Mercedes-Benz E300

The 2019 Mercedes-Benz E300 is a luxury sedan known for its elegant design, comfortable ride, and advanced technology. The E300 is powered by a 2.0-liter 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 2019 E-Class include the E450’s 3.0-liter V6 and the AMG E63’s 4.0-liter V8. Owners generally appreciate the E300’s refined interior, smooth handling, and fuel efficiency, but some have reported issues with the vehicle’s complex electronics and occasional mechanical problems.

Engine

2.0L Turbocharged Inline-4 (M264)

• Camshaft Adjuster Failure
  • Description/Symptoms: Engine may experience rough idling, loss of power, and the check engine light may illuminate. Diagnostic trouble codes (DTCs) related to camshaft position or timing may be present.
  • Solution: Replacement of the faulty camshaft adjuster.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found
• High-Pressure Fuel Pump Failure
  • Description/Symptoms: Difficulty starting, stalling, or a noticeable decrease in engine performance. The check engine light may also turn on.
  • Solution: Replacement of the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic (725.0)

• Rough or Delayed Shifting
  • Description/Symptoms: Hesitation or harshness during gear changes, especially when shifting between lower gears.
  • Solution: Software update of the transmission control module (TCM). In some cases, valve body replacement may be necessary if the issue persists.
  • Estimated Cost to Fix: $200 - $500 for software update; $1,500 - $3,000+ for valve body replacement
  • Recalls: None Found
• Torque Converter Issues
  • Description/Symptoms: Shuddering at low speeds, especially during light acceleration.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure (If Equipped)
  • Description/Symptoms: The vehicle may sag or sit unevenly, particularly overnight. A warning message may appear on the dashboard indicating a problem with the air suspension. The compressor might be excessively noisy or not run at all.
  • Solution: Replacement of the air suspension compressor.
  • Estimated Cost to Fix: $1,000 - $2,500+
  • Recalls: None Found

Electrical

• COMAND System Malfunctions
  • Description/Symptoms: Freezing, crashing, or unresponsive touchscreen. Navigation errors and Bluetooth connectivity problems may also occur.
  • Solution: Software update or replacement of the COMAND system unit.
  • Estimated Cost to Fix: $200 - $500 for software update; $1,500 - $3,000+ for system replacement.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The battery may repeatedly drain, especially if the car is left parked for extended periods. This can lead to difficulty starting the car or complete battery failure.
  • Solution: Diagnosis to identify the parasitic draw, which may be caused by a faulty module or component. Repair or replacement of the affected component.
  • Estimated Cost to Fix: $100 - $200 for diagnosis; $200 - $1,000+ depending on the faulty component.
  • Recalls: None Found
• Parking Sensor Failure
  • Description/Symptoms: Parking sensors may intermittently fail to detect objects, or they may generate false alarms.
  • Solution: Replacement of the faulty sensor(s).
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: Sunroof may fail to open or close properly, or it may make excessive noise during operation.
  • Solution: Lubrication of the sunroof tracks and mechanism. In some cases, replacement of the sunroof motor or other components may be necessary.
  • Estimated Cost to Fix: $100 - $300 for lubrication; $500 - $1,500+ for motor or component replacement.
  • Recalls: None Found

Interior

• Seat Motor Failure
  • Description/Symptoms: Seats may not adjust properly or at all.
  • Solution: Replacement of the faulty seat motor.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Dashboard Creaking
  • Description/Symptoms: Annoying creaking sounds emanating from the dashboard, especially during cold weather or over rough roads.
  • Solution: This is often difficult to fix definitively. Dealers may attempt to add padding or tighten fasteners to reduce the noise.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Summary The 2019 Mercedes-Benz E300 generally provides a luxurious and comfortable driving experience. However, potential buyers should be aware of potential issues, particularly with the engine’s camshaft adjuster and high-pressure fuel pump, as well as the transmission’s shifting behavior. Electrical issues with the COMAND system and battery drain are also worth noting. Suspension issues with the air suspension and interior issues with seat motors may arise. The severity and cost of these issues can vary, with engine and transmission repairs potentially reaching several thousand dollars. Careful inspection and a thorough pre-purchase inspection by a qualified mechanic are recommended.