2014 Mercedes-Benz CLS350

The 2014 Mercedes-Benz CLS350 is a luxury coupe known for its sleek design and comfortable ride. The CLS350 is powered by a 3.5-liter V6 engine producing 302 horsepower and 273 lb-ft of torque, paired with a 7-speed automatic transmission. Other engine options available for the CLS range in 2014 include more powerful V8 engines in the CLS550 and AMG variants. Owners generally praise the CLS350 for its elegant styling, luxurious interior, and smooth driving experience. Common complaints revolve around the car’s high maintenance costs, some electronic glitches, and the firm ride quality on certain road surfaces.

Engine

3.5L V6

• Camshaft Adjuster Solenoid Failure
  • Description/Symptoms: Engine may run rough, stall, or have reduced power. The check engine light may illuminate. Diagnostic trouble codes (DTCs) related to camshaft timing or position are often present.
  • Solution: Replace the faulty camshaft adjuster solenoid.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Oil Leaks (Valve Cover Gaskets)
  • Description/Symptoms: Oil may leak from the valve cover gaskets, leading to a burning smell, visible oil drips, or low oil levels.
  • Solution: Replace the valve cover gaskets.
  • Estimated Cost to Fix: $300 - $700+
  • Recalls: None Found

Transmission

7G-Tronic (7-Speed Automatic)

• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, especially at low speeds. May also cause rough shifting and hesitation.
  • Solution: Replace the torque converter.
  • Estimated Cost to Fix: $1,500 - $3,500+
  • Recalls: None Found
• Valve Body Issues
  • Description/Symptoms: Harsh or delayed shifting, slipping between gears, or failure to shift at all.
  • Solution: Repair or replace the valve body.
  • Estimated Cost to Fix: $800 - $2,500+
  • Recalls: None Found

Suspension

• Air Suspension Malfunctions (If Equipped)
  • Description/Symptoms: The vehicle may sag on one or more corners, ride height may not adjust properly, or the air compressor may run continuously. Error messages may appear on the dashboard.
  • Solution: Diagnose and repair or replace faulty components such as the air struts, air compressor, or ride height sensors.
  • Estimated Cost to Fix: $1,000 - $3,000+ per strut; $500 - $1,500+ for the compressor.
  • Recalls: None Found

Electrical

• Electronic Control Unit (ECU) Problems
  • Description/Symptoms: Intermittent electrical issues, such as warning lights illuminating for no apparent reason, malfunctioning sensors, or problems with the infotainment system.
  • Solution: Diagnose and reprogram or replace the faulty ECU.
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The battery may drain quickly, especially if the vehicle is left parked for an extended period. This can make it difficult to start the car.
  • Solution: Identify the parasitic draw and repair or replace the faulty component. Could be from aftermarket equipment or faulty control units.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: Sunroof may not open or close properly, may get stuck, or may leak water.
  • Solution: Repair or replace the sunroof motor, tracks, or seals.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found

Interior

• COMAND System Malfunctions
  • Description/Symptoms: The COMAND infotainment system may freeze, crash, or have issues with navigation, audio, or Bluetooth connectivity.
  • Solution: Update the software, repair or replace the COMAND unit.
  • Estimated Cost to Fix: $300 - $1,500+
  • Recalls: None Found

Summary

The 2014 Mercedes-Benz CLS350 can be a luxurious and enjoyable vehicle, but potential buyers should be aware of the common issues outlined above. While some problems are relatively minor and inexpensive to fix, others can be more significant and costly, especially regarding the transmission, air suspension (if equipped), and electrical systems. Pre-purchase inspections by a qualified mechanic are highly recommended to identify any existing or potential problems. The severity of issues ranges from minor inconveniences to major mechanical failures, with repair costs varying widely based on the specific problem and the repair shop.