2021 Mercedes-Benz A45 AMG S

The 2021 Mercedes-Benz A45 AMG S is a high-performance hatchback known for its exhilarating performance and luxurious features. The A45 AMG S comes standard with the M139 2.0-liter turbocharged inline-4 engine, producing a staggering 416 horsepower and 369 lb-ft of torque, paired exclusively with an 8-speed dual-clutch automatic transmission. Some people love the car’s aggressive styling, powerful engine, and advanced technology. However, others find the ride firm, the interior somewhat cramped, and the price relatively high for a hatchback.

Category

M139 2.0-liter Turbocharged Inline-4 Engine

• Excessive Oil Consumption
  • Description/Symptoms: Some owners have reported higher than expected oil consumption, requiring frequent top-ups between scheduled oil changes. This can manifest as low oil level warnings or the need to add oil every few thousand miles.
  • Solution: Regular monitoring of oil levels and addressing any leaks or underlying issues.
  • Estimated Cost to Fix: N/A
  • Recalls: None Found

8-Speed Dual-Clutch Transmission

• Jerky or Hesitant Shifting at Low Speeds
  • Description/Symptoms: Some owners have experienced occasional jerky or hesitant shifting, particularly at low speeds or during stop-and-go traffic. This can feel like the transmission is struggling to find the correct gear.
  • Solution: Software updates to the transmission control module (TCM) may help improve shifting smoothness. In some cases, a transmission flush or replacement of specific components (e.g., valve body) may be necessary.
  • Estimated Cost to Fix: N/A
  • Recalls: None Found

Suspension

• Stiff Ride Quality
  • Description/Symptoms: The A45 AMG S, with its performance-oriented suspension, can deliver a very firm ride, especially on rough or uneven road surfaces. While contributing to the car’s excellent handling, this can be uncomfortable for some drivers and passengers.
  • Solution: There are no set solutions, some people replace the suspension for aftermarket products.
  • Estimated Cost to Fix: N/A
  • Recalls: None Found

Electrical

• MBUX System Glitches/Freezing
  • Description/Symptoms: The Mercedes-Benz User Experience (MBUX) infotainment system can experience occasional glitches, freezing, or slow response times. This can affect navigation, audio, and other vehicle functions.
  • Solution: Software updates from Mercedes-Benz can often resolve these issues. In some cases, a system reset or replacement of the MBUX module may be necessary.
  • Estimated Cost to Fix: N/A
  • Recalls: None Found

Interior

• Rattling/Squeaking Noises
  • Description/Symptoms: Some owners have reported experiencing rattling or squeaking noises emanating from various interior components, such as the dashboard, door panels, or seats.
  • Solution: Identifying the source of the noise and applying felt tape or other damping materials to eliminate the friction causing the sound.
  • Estimated Cost to Fix: N/A
  • Recalls: None Found

Exterior

No Issues Found

Summary

The 2021 Mercedes-Benz A45 AMG S presents a mixed bag of potential issues. The engine is generally robust, but excessive oil consumption may be a concern to look out for. The transmission can experience jerky shifting, and the infotainment system could glitch out on you, but most are fixed with a software update. Owners might also find the ride quality to be harsh. While some issues can be resolved with software updates or minor repairs, others may require more extensive work. The overall severity of the issues is moderate, with the potential for costly repairs depending on the specific problem.