2021 Mercedes-Benz A45 AMG S

2021 Mercedes-Benz A45 AMG S

The 2021 Mercedes-Benz A45 AMG S is a high-performance hatchback with a turbocharged 2.0-liter four-cylinder engine producing 415 horsepower and 369 lb-ft of torque. It is paired with an eight-speed dual-clutch transmission and all-wheel drive. The A45 AMG S is praised for its impressive acceleration, sharp handling, and luxurious interior. However, there have been some reported issues with the vehicle.

Engine

• 2.0L Turbocharged Four-Cylinder Engine
  • Intake Valve Sticking
    • Description/Symptoms: The intake valves can become stuck in the open position, causing a loss of power and a rough idle.
    • Solution: Replace the intake valves.
    • Estimated Cost to Fix: $800 - $1,200+
    • Recalls: None Found
  • Turbocharger Failure
    • Description/Symptoms: The turbocharger can fail prematurely, leading to a loss of boost pressure and power.
    • Solution: Replace the turbocharger.
    • Estimated Cost to Fix: $2,500 - $3,500+
    • Recalls: None Found

Transmission

• Eight-Speed Dual-Clutch Transmission
  • Shifting Issues
    • Description/Symptoms: The transmission may experience difficulty shifting gears, especially under hard acceleration or deceleration.
    • Solution: Reset the transmission control module or replace the transmission fluid.
    • Estimated Cost to Fix: $100 - $500+
    • Recalls: None Found

Suspension

• No Issues Found

Electrical

• Alternator Failure
  • Description/Symptoms: The alternator may fail, resulting in a loss of electrical power and a warning light on the dashboard.
  • Solution: Replace the alternator.
  • Estimated Cost to Fix: $700 - $1,200+
  • Recalls: None Found
• Starter Motor Failure
  • Description/Symptoms: The starter motor may fail, preventing the engine from starting.
  • Solution: Replace the starter motor.
  • Estimated Cost to Fix: $600 - $900+
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Infotainment System Glitches
  • Description/Symptoms: The infotainment system may experience occasional glitches, such as freezing or losing connectivity.
  • Solution: Update the software or replace the head unit.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found
• Panoramic Roof Leaks
  • Description/Symptoms: The panoramic roof may leak during heavy rain or car washes.
  • Solution: Realign the roof or replace the seals.
  • Estimated Cost to Fix: $500 - $1,000+
  • Recalls: None Found

Summary

The 2021 Mercedes-Benz A45 AMG S is a capable and desirable performance hatchback, but it is not without its issues. The engine and electrical systems seem to be the most problematic areas, with reported issues like intake valve sticking, turbocharger failure, alternator failure, and starter motor failure. The transmission and suspension have also had some reported issues, but they are less common. The interior and exterior have relatively minor problems, such as infotainment system glitches and panoramic roof leaks. Overall, the severity and cost of the issues with the A45 AMG S vary depending on the specific problem and the extent of the repairs required.