2018 Mercedes-Benz S450

Introduction:

The 2018 Mercedes-Benz S450 is a luxury sedan that offers a refined and comfortable driving experience. It features a 3.0L turbocharged inline-6 engine producing 362 horsepower and 369 lb-ft of torque. The S450 is paired with a 9-speed automatic transmission, delivering smooth gear shifts and optimal performance. The vehicle is praised for its spacious interior, advanced technology, and impressive handling capabilities. However, like any vehicle, it has faced some issues, which we will explore in this comprehensive list.

Engine

3.0L Turbocharged Inline-6

• Intake Valve Coking:
  • Description/Symptoms: Carbon buildup on the intake valves can cause reduced engine power, rough idling, and increased emissions.
  • Solution: Remove and clean the carbon buildup from the intake valves.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Transmission

9-Speed Automatic

• Shifting Hesitation:
  • Description/Symptoms: The transmission may hesitate or delay when shifting gears, especially during acceleration or gear changes.
  • Solution: Update the transmission control module software or replace the valve body.
  • Estimated Cost to Fix: $1,000 - $2,000+
  • Recalls: None Found

Suspension

• Air Suspension Malfunction:
  • Description/Symptoms: The air suspension system may fail, causing the vehicle to sag or lean. Loss of air pressure or faulty air springs can lead to this issue.
  • Solution: Inspect and replace the faulty air springs, or repair any leaks in the air suspension system.
  • Estimated Cost to Fix: $1,000 - $3,000+
  • Recalls: None Found

Electrical

• Battery Discharge:
  • Description/Symptoms: The battery may drain prematurely, leaving the vehicle unable to start.
  • Solution: Test the battery and charging system. Replace the battery, alternator, or repair wiring issues as needed.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Exterior

• Headlight Condensation:
  • Description/Symptoms: Moisture may build up inside the headlight assembly, causing condensation.
  • Solution: Replace the headlight assembly or repair any leaks allowing moisture to enter.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Interior

• Navigation System Issues:
  • Description/Symptoms: The navigation system may freeze, lose functionality, or become unresponsive.
  • Solution: Update the navigation software or replace the navigation module.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found
• Panoramic Sunroof Rattle:
  • Description/Symptoms: A rattling noise may occur when the panoramic sunroof is open or closed.
  • Solution: Adjust or replace the sunroof track or guides.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Summary:

The 2018 Mercedes-Benz S450 has faced some issues, including engine intake valve coking, transmission shifting hesitation, air suspension malfunctions, battery discharge, headlight condensation, navigation system issues, and panoramic sunroof rattle. While most issues are not considered severe or widespread, they can impact the vehicle’s performance, reliability, and overall driving experience. Estimated repair costs vary significantly depending on the specific issue and the severity of the problem.