2017 Mercedes-Benz E400

Introduction:

The 2017 Mercedes-Benz E400 is a midsize luxury sedan powered by a potent 3.0L twin-turbo V6 engine that produces 329 horsepower and 354 lb-ft of torque. The E400 is mated to a 9-speed automatic transmission and available in rear-wheel drive or all-wheel drive configurations. Praised for its refined interior, advanced technology features, and comfortable ride, the E400 also has some commonly reported issues that owners should be aware of.

Engine

• Engine Misfiring
  • Description/Symptoms: Rough idling, loss of power, illuminated check engine light
  • Solution: Replace faulty ignition coils or spark plugs
  • Estimated Cost to Fix: $200 - $600+
  • Recalls: None Found
• Valve Stem Seal Leakage
  • Description/Symptoms: Excessive oil consumption, blue or white smoke from exhaust
  • Solution: Replace valve stem seals
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found
• Timing Chain Tensioner Failure
  • Description/Symptoms: Noisy timing chain, engine rattling, reduced power
  • Solution: Replace timing chain tensioner
  • Estimated Cost to Fix: $800 - $1,200+
  • Recalls: None Found

Transmission

• 9-Speed Automatic Transmission Jerking
  • Description/Symptoms: Harsh shifts, shuddering, delayed engagement
  • Solution: Software update or transmission fluid replacement
  • Estimated Cost to Fix: $0 - $500+
  • Recalls: None Found
• Mechatronic Unit Failure
  • Description/Symptoms: Transmission slipping, lack of response, illuminated check engine light
  • Solution: Replace mechatronic unit
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

• Air Suspension Compressor Failure
  • Description/Symptoms: Reduced ride height, uneven suspension, illuminated air suspension warning
  • Solution: Replace air suspension compressor
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found
• Rear Sway Bar Link Bushing Failure
  • Description/Symptoms: Clunking noise from rear suspension, uneven tire wear
  • Solution: Replace rear sway bar link bushings
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Electrical

• Battery Discharge
  • Description/Symptoms: Battery drains quickly, difficulty starting the car
  • Solution: Check for parasitic drain, replace battery if necessary
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Infotainment System Glitches
  • Description/Symptoms: Screen freezing, unresponsive touch controls, audio issues
  • Solution: Software update or hardware replacement
  • Estimated Cost to Fix: $0 - $1,000+
  • Recalls: None Found

Exterior

• Roof Panel Alignment Issues
  • Description/Symptoms: Misaligned roof panel, wind noise, water leaks
  • Solution: Adjust or replace roof panel
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found
• Headlight Condensation
  • Description/Symptoms: Moisture buildup inside headlights
  • Solution: Ventilate headlights, replace faulty seals if necessary
  • Estimated Cost to Fix: $0 - $500+
  • Recalls: None Found

Interior

• Panoramic Sunroof Rattling
  • Description/Symptoms: Rattling noise from panoramic sunroof
  • Solution: Adjust or replace sunroof weatherstripping
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Front Seat Ventilation System Failure
  • Description/Symptoms: Seat ventilation not working, fan noise
  • Solution: Repair or replace seat ventilation system
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Other

• Trunk Lid Latch Failure
  • Description/Symptoms: Difficulty opening or closing trunk
  • Solution: Replace trunk latch
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Summary:

While the 2017 Mercedes-Benz E400 offers a sophisticated and comfortable driving experience, it’s not without its fair share of issues. Engine and transmission problems can be costly to repair, particularly the timing chain tensioner failure and mechatronic unit failure. Fortunately, most electrical and interior issues are less severe and can be fixed for under $1,000. However, some owners have experienced multiple issues with their E400s, indicating potential reliability concerns that should be considered before purchasing this luxury sedan.