2014 Mercedes-Benz CLA45 AMG

The 2014 Mercedes-Benz CLA45 AMG is a performance-oriented compact sedan known for its aggressive styling and powerful turbocharged engine. While the CLA-Class also came with more economical engine options, this report focuses on the AMG variant. The CLA45 AMG featured a 2.0-liter turbocharged inline-4 engine producing 355 horsepower and 332 lb-ft of torque, paired exclusively with a 7-speed dual-clutch automatic transmission. Owners appreciate the car’s exhilarating acceleration, sporty handling, and distinctive design. Common dislikes include a firm ride, limited rear seat space, and some concerns about reliability and maintenance costs associated with the high-performance powertrain.

Engine

2.0L Turbocharged Inline-4 (M133)

• Turbocharger Failure
  • Description/Symptoms: Loss of power, whining noise from the turbocharger, check engine light.
  • Solution: Turbocharger replacement.
  • Estimated Cost to Fix: $2,500 - $4,000+
  • Recalls: None Found
• High-Pressure Fuel Pump Failure
  • Description/Symptoms: Extended cranking, rough idle, stalling, check engine light.
  • Solution: Replacement of the high-pressure fuel pump.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Low coolant level, overheating, visible coolant leaks. This is often due to cracked hoses or a failing water pump.
  • Solution: Identify and replace the leaking component (hose, water pump, etc.).
  • Estimated Cost to Fix: $200 - $1,000+ (depending on the source of the leak)
  • Recalls: None Found

Transmission

7-Speed Dual-Clutch Automatic (DCT)

• Rough Shifting/Hesitation
  • Description/Symptoms: Jerky shifts, particularly at low speeds or during stop-and-go traffic. Hesitation or delays when accelerating.
  • Solution: Transmission software update/reprogramming may resolve some issues. In more severe cases, valve body replacement or complete transmission replacement may be required.
  • Estimated Cost to Fix: $200 (software update) - $6,000+ (transmission replacement)
  • Recalls: None Found
• Clutch Slippage
  • Description/Symptoms: RPMs rising without a corresponding increase in speed, especially under heavy acceleration. This may be more prevalent at higher mileage.
  • Solution: Clutch replacement.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

• Noisy Suspension Components
  • Description/Symptoms: Squeaking, rattling, or clunking noises coming from the suspension, especially over bumps. This can be due to worn bushings, ball joints, or strut mounts.
  • Solution: Inspection and replacement of worn suspension components.
  • Estimated Cost to Fix: $200 - $1,000+ (depending on which components need replacement)
  • Recalls: None Found

Electrical

• Malfunctioning Sensors
  • Description/Symptoms: Various warning lights (ABS, ESP, TPMS) illuminating on the dashboard. These can be caused by faulty wheel speed sensors, tire pressure sensors, or other sensors throughout the vehicle.
  • Solution: Diagnosis to identify the specific sensor causing the issue, followed by sensor replacement.
  • Estimated Cost to Fix: $150 - $500+ (per sensor)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: The vehicle’s battery repeatedly dying or requiring frequent jump starts. This can be due to a parasitic draw caused by a faulty module or accessory that continues to draw power even when the car is turned off.
  • Solution: Diagnosis to identify the source of the parasitic draw, followed by repair or replacement of the faulty component.
  • Estimated Cost to Fix: $100 - $500+ (depending on the complexity of the issue)
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Command System Issues
  • Description/Symptoms: The COMAND system (infotainment) may experience glitches, freezing, or random shutdowns. The screen might also flicker or display distorted images.
  • Solution: Software update, replacement of the COMAND unit in severe cases.
  • Estimated Cost to Fix: $100 - $200+ (software update) $1,000+ (unit replacement)
  • Recalls: None Found
• Sunroof Issues
  • Description/Symptoms: The sunroof getting stuck, making strange noises while opening or closing, or not sealing properly leading to water leaks.
  • Solution: Sunroof track cleaning and lubrication. In more severe cases, the entire sunroof assembly may need to be replaced.
  • Estimated Cost to Fix: $100 - $1,500+
  • Recalls: None Found

Summary

The 2014 Mercedes-Benz CLA45 AMG, while offering impressive performance, has some notable reliability concerns. Engine issues, particularly turbocharger and fuel pump failures, can be expensive. Transmission problems, such as rough shifting and clutch slippage, are also common. Electrical issues and sunroof malfunctions can add to the ownership costs. Overall, while the CLA45 AMG is an exciting vehicle to drive, potential buyers should be aware of these potential issues and factor them into their purchasing decision. Pre-purchase inspections and a comprehensive maintenance history are highly recommended.