2017 Mercedes-Benz SLC200

The 2017 Mercedes-Benz SLC200 is a stylish and sporty roadster that offers a blend of luxury and performance. The SLC200 is equipped with a 2.0-liter turbocharged inline-4 engine producing 184 horsepower and 221 lb-ft of torque. Other engine options for the 2017 SLC included the SLC300 with a more powerful version of the same 2.0-liter engine, and the AMG SLC43 with a 3.0-liter V6. All engine options were paired with a 9G-TRONIC 9-speed automatic transmission. Owners appreciate the SLC200’s sleek design, comfortable interior, and engaging driving dynamics. However, some common complaints revolve around reliability issues, particularly with the electronics and certain engine components.

Engine

2.0L Turbocharged Inline-4

• High-Pressure Fuel Pump Failure
  • Description/Symptoms: Difficulty starting, rough idling, loss of power, and fuel smell.
  • Solution: Replacement of the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found
• Camshaft Adjuster (Magnet) Failure
  • Description/Symptoms: Check engine light, rough idling, decreased fuel economy, and potential engine noise. The camshaft adjuster magnets are responsible for controlling the variable valve timing.
  • Solution: Replacement of the faulty camshaft adjuster magnet(s).
  • Estimated Cost to Fix: $300 - $600+ per magnet
  • Recalls: None Found
• Turbocharger Wastegate Actuator Issues
  • Description/Symptoms: Loss of power, especially at higher RPMs, check engine light, and potentially a whistling sound from the turbocharger.
  • Solution: Replacement of the wastegate actuator or, in some cases, the entire turbocharger assembly.
  • Estimated Cost to Fix: $500 - $2,000+ depending on whether the actuator can be replaced separately.
  • Recalls: None Found

Transmission

9G-TRONIC 9-Speed Automatic

• Rough or Delayed Shifting
  • Description/Symptoms: Noticeable harshness during gear changes, delays when shifting between gears, and potential slipping.
  • Solution: Transmission fluid flush and filter replacement, software update, or valve body replacement in more severe cases.
  • Estimated Cost to Fix: $300 - $2,500+ depending on the severity and required repair.
  • Recalls: None Found
• Torque Converter Issues
  • Description/Symptoms: Shuddering at low speeds, especially during acceleration, and potential stalling.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

Suspension

No Issues Found

Electrical

• COMAND System Malfunctions
  • Description/Symptoms: Infotainment screen freezing, navigation errors, Bluetooth connectivity problems, and audio system glitches.
  • Solution: Software update, resetting the system, or replacement of the COMAND unit.
  • Estimated Cost to Fix: $100 - $2,000+ depending on the repair.
  • Recalls: None Found
• Parking Sensor Failures
  • Description/Symptoms: Parking sensors not functioning correctly or giving false readings.
  • Solution: Replacement of the faulty sensor(s).
  • Estimated Cost to Fix: $200 - $500+ per sensor, including labor.
  • Recalls: None Found
• Convertible Top Malfunctions
  • Description/Symptoms: The convertible top fails to open or close, makes unusual noises during operation, or gets stuck midway.
  • Solution: Check and replace hydraulic fluid, replace the pump, or repair/replace the sensors.
  • Estimated Cost to Fix: $150 - $3,000+ depending on the issue.
  • Recalls: None Found

Exterior

• Convertible Top Seal Leaks
  • Description/Symptoms: Water leaking into the cabin, especially during heavy rain or car washes.
  • Solution: Replacement of the convertible top seals.
  • Estimated Cost to Fix: $300 - $1,000+ depending on which seals need replacing.
  • Recalls: None Found

Interior

• Seat Heater Failure
  • Description/Symptoms: The seat heater either doesn’t turn on or provides inconsistent heating.
  • Solution: Replacement of the heating element or related wiring.
  • Estimated Cost to Fix: $200 - $800+ per seat.
  • Recalls: None Found

Summary

The 2017 Mercedes-Benz SLC200 can be a fun and stylish roadster, but potential buyers should be aware of the common issues. Engine problems like high-pressure fuel pump and camshaft adjuster failures, along with transmission issues such as rough shifting, can lead to significant repair costs. Electrical problems are also a recurring theme. The severity of these issues varies, and repair costs can range from a few hundred to several thousand dollars. A pre-purchase inspection by a qualified mechanic is highly recommended.