2018 Mercedes-Benz GLA45 AMG

The 2018 Mercedes-Benz GLA45 AMG is a high-performance subcompact SUV known for its potent engine and sporty handling. It came standard with a turbocharged 2.0-liter inline-4 engine producing 375 horsepower and 350 lb-ft of torque, paired with a 7-speed AMG Speedshift DCT automatic transmission. People generally appreciate the GLA45 AMG for its exhilarating acceleration, agile handling, and upscale interior. Common dislikes include the firm ride quality, limited rear passenger space, and relatively high price point.

Engine

2.0L Turbocharged Inline-4 (M133)

• Turbocharger Failure
  • Description/Symptoms: Whining noise from the engine bay, reduced power, check engine light.
  • Solution: Turbocharger replacement.
  • Estimated Cost to Fix: $2,500 - $4,500+
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Low coolant level, overheating, coolant smell, visible leaks near the water pump or coolant hoses.
  • Solution: Replacement of faulty coolant hoses, water pump, or thermostat housing.
  • Estimated Cost to Fix: $500 - $1500+
  • Recalls: None Found
• Excessive Oil Consumption
  • Description/Symptoms: Low oil level warning, the need to add oil frequently between services, blue smoke from the exhaust.
  • Solution: Diagnosis to determine cause (e.g., valve stem seals, piston rings). Repair or engine rebuild may be necessary.
  • Estimated Cost to Fix: $500 - $5,000+ (depending on the cause and repair)
  • Recalls: None Found

Transmission

7-Speed AMG Speedshift DCT Automatic Transmission (7G-DCT)

• Hesitation/Rough Shifting
  • Description/Symptoms: Delays in gear changes, jerky or abrupt shifts, particularly at low speeds.
  • Solution: Software update, transmission fluid flush, or mechatronic unit replacement.
  • Estimated Cost to Fix: $200 - $4,000+
  • Recalls: None Found
• Transmission Slipping
  • Description/Symptoms: Engine revving high without corresponding acceleration, inability to shift gears properly.
  • Solution: Repair or replacement of the transmission.
  • Estimated Cost to Fix: $5,000 - $8,000+
  • Recalls: None Found

Suspension

• Failed Air Suspension Components (If Equipped with Optional Adaptive Suspension)
  • Description/Symptoms: Vehicle sagging on one side, ride height malfunctions, error messages on the dashboard.
  • Solution: Replacement of air struts, air compressor, or associated sensors.
  • Estimated Cost to Fix: $1,000 - $3,000+ per corner
  • Recalls: None Found
• Noises from Suspension
  • Description/Symptoms: Clunking, creaking, or rattling noises when driving over bumps.
  • Solution: Replacement of worn bushings, ball joints, or sway bar links.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Electrical

• Battery Drain
  • Description/Symptoms: Dead battery, difficulty starting the car, the need for frequent jump starts.
  • Solution: Diagnosis of parasitic draw, replacement of faulty modules, or a new battery.
  • Estimated Cost to Fix: $150 - $1,000+
  • Recalls: None Found
• Malfunctioning Sensors
  • Description/Symptoms: Warning lights on the dashboard (e.g., ABS, ESP, tire pressure monitoring), inaccurate readings.
  • Solution: Replacement of faulty sensors.
  • Estimated Cost to Fix: $200 - $800+ per sensor
  • Recalls: None Found

Exterior

• Sensor Malfunctions
  • Description/Symptoms: Malfunction of parking sensors or sensors that aid driving
  • Solution: Replacement of sensors.
  • Estimated Cost to Fix: $200-$800
  • Recalls: None Found

Interior

• Infotainment System Issues
  • Description/Symptoms: Freezing, Crashing, or failure of the infotainment screen.
  • Solution: Replacement of the infotainment screen or associated module.
  • Estimated Cost to Fix: $1,000 - $3,000+
  • Recalls: None Found

Summary

The 2018 Mercedes-Benz GLA45 AMG, while offering thrilling performance, can present owners with potential issues ranging from engine and transmission problems to electrical and suspension malfunctions. While some issues are relatively minor and inexpensive to fix, others, such as turbocharger failure or transmission replacement, can be quite costly. The severity of these issues can vary, but prospective buyers should be aware of these potential problems and consider a pre-purchase inspection by a qualified mechanic familiar with Mercedes-Benz vehicles.