2017 Mercedes-Benz CLS400

Introduction

The 2017 Mercedes-Benz CLS400 is a mid-size luxury sedan powered by a 3.0-liter twin-turbocharged V6 engine that produces 329 horsepower and 354 lb-ft of torque. It comes standard with a 9-speed automatic transmission and rear-wheel drive, while all-wheel drive is available as an option. The CLS400 offers a comfortable and luxurious interior, sleek exterior styling, and impressive performance capabilities. It has received praise for its handling, acceleration, and comprehensive safety features. However, some owners have reported various issues with the vehicle.

Engine

• 3.0L Twin-Turbocharged V6 Engine
  • Fuel Injector Failure
    • Description/Symptoms: Leaking fuel injectors can cause engine hesitation, performance issues, and poor fuel economy.
    • Solution: Replace affected fuel injector(s).
    • Estimated Cost to Fix: $500 - $1,000+
    • Recalls: None Found
  • Intake Manifold Carbon Buildup
    • Description/Symptoms: Carbon buildup in the intake manifold can restrict airflow and reduce engine performance.
    • Solution: Remove and clean the intake manifold and valves.
    • Estimated Cost to Fix: $500 - $1,500+
    • Recalls: Recalls Relate to Carbon Buildup: 2021100036, 2021100037

Transmission

• 9-Speed Automatic Transmission
  • Delayed Gear Shifts
    • Description/Symptoms: Transmission hesitates or delays when shifting gears, especially during acceleration or deceleration.
    • Solution: Update transmission software or replace transmission components.
    • Estimated Cost to Fix: $500 - $2,500+
    • Recalls: None Found
  • Harsh Shifts
    • Description/Symptoms: Transmission shifts abruptly or makes a clunking noise during gear changes.
    • Solution: Replace transmission solenoid or perform transmission flush.
    • Estimated Cost to Fix: $500 - $2,000+
    • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Battery Discharge - Description/Symptoms: Battery drains quickly, leading to starting problems or electrical failures. - Solution: Test and replace defective battery or alternator. - Estimated Cost to Fix: $150 - $600+ - Recalls: None Found
• Electrical Connector Corrosion - Description/Symptoms: Corrosion in electrical connectors can cause electrical faults, such as malfunctioning sensors or lighting issues. - Solution: Clean or replace affected connectors. - Estimated Cost to Fix: $100 - $500+ - Recalls: None Found

Exterior

• No Issues Found

Interior

• Infotainment System Lag - Description/Symptoms: Infotainment system touchscreen becomes unresponsive or slow to respond. - Solution: Update software or replace affected components. - Estimated Cost to Fix: $500 - $2,000+ - Recalls: None Found
• Climate Control Malfunction - Description/Symptoms: Climate control system fails to maintain desired temperature or functions erratically. - Solution: Diagnose and repair malfunctioning sensors or components. - Estimated Cost to Fix: $500 - $2,000+ - Recalls: None Found

Summary

The 2017 Mercedes-Benz CLS400 is a highly rated luxury sedan that offers a balanced blend of performance and comfort. However, some owners have encountered various issues, including fuel injector failure, transmission problems, battery discharge, electrical connector corrosion, infotainment system lag, and climate control malfunctions. The cost to fix these issues can range from $100 to $2,500 or more depending on the severity of the issue and the components that need to be replaced. While the CLS400 is a well-rounded vehicle, it’s essential to be aware of potential issues before making a purchase decision.