2022 Mercedes-Benz A45 AMG S

The 2022 Mercedes-Benz A45 AMG S is a high-performance hatchback known for its potent engine, sporty handling, and luxurious interior. Other engine options are not available for the A45 AMG S, as it comes standard with the powerful M139 2.0-liter turbocharged inline-4 engine producing 416 horsepower and 369 lb-ft of torque. It is paired exclusively with an 8-speed dual-clutch automatic transmission. Owners typically praise the car’s thrilling acceleration, agile cornering, and premium features. Some common dislikes include its firm ride, relatively high price tag, and potential for complex repairs due to its advanced technology.

Engine

M139 2.0-Liter Turbocharged Inline-4

• Engine Misfires
  • Description/Symptoms: Engine misfires, rough idling, and a noticeable loss of power. May trigger the check engine light. Often caused by faulty ignition coils or spark plugs.
  • Solution: Replace the faulty ignition coil(s) and/or spark plugs.
  • Estimated Cost to Fix: $200 - $600+ depending on how many cylinders need to be serviced and labor costs.
  • Recalls: None Found
• Turbocharger Failure
  • Description/Symptoms: Whining noises from the engine bay, reduced power, and potential smoke from the exhaust.
  • Solution: Replacement of the turbocharger unit.
  • Estimated Cost to Fix: $3,000 - $6,000+ depending on labor and parts availability.
  • Recalls: None Found
• Coolant Leaks
  • Description/Symptoms: Low coolant level warning, visible coolant leak under the vehicle, and potential engine overheating. Often related to hoses or the water pump.
  • Solution: Identify and repair or replace the leaking component (hose, water pump, etc.).
  • Estimated Cost to Fix: $200 - $1,500+ depending on the source of the leak.
  • Recalls: None Found

Transmission

8-Speed Dual-Clutch Automatic

• Rough Shifting/Hesitation
  • Description/Symptoms: Jerky or delayed shifts, particularly at lower speeds. Can also include clunking sounds during gear changes.
  • Solution: Could be caused by low transmission fluid, wear in the clutch packs, or a faulty mechatronic unit. Performing a transmission service with new fluid, or clutch replacement. In some cases, the mechatronic unit might need replacement.
  • Estimated Cost to Fix: $300 - $7,000+ depending on the severity of the issue.
  • Recalls: None Found
• Transmission Slippage
  • Description/Symptoms: Engine RPMs increase without a corresponding increase in vehicle speed. Noticeable lack of acceleration.
  • Solution: Could be due to worn clutch packs or internal transmission damage. Typically requires a transmission rebuild or replacement.
  • Estimated Cost to Fix: $4,000 - $10,000+
  • Recalls: None Found

Suspension

• Adaptive Damper Malfunctions
  • Description/Symptoms: Uneven ride quality, harshness over bumps, or warning lights on the dashboard related to the suspension system.
  • Solution: Diagnose and replace the faulty adaptive damper(s).
  • Estimated Cost to Fix: $800 - $2,000+ per damper, including labor.
  • Recalls: None Found
• Creaking Noises
  • Description/Symptoms: Creaking or squeaking sounds from the suspension while driving over bumps or turning. Often caused by worn bushings or ball joints.
  • Solution: Replace the worn bushings or ball joints.
  • Estimated Cost to Fix: $300 - $1,000+ depending on the component and labor.
  • Recalls: None Found

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The MBUX infotainment system freezes, becomes unresponsive, or restarts unexpectedly.
  • Solution: Software updates often resolve these issues. If the problem persists, hardware replacement may be necessary.
  • Estimated Cost to Fix: $0 for software updates; $500 - $2,000+ for hardware replacement.
  • Recalls: None Found
• Sensor Malfunctions (Parking Sensors, Blind Spot Monitoring)
  • Description/Symptoms: Erratic behavior or failure of parking sensors, blind spot monitoring, or other driver-assistance systems.
  • Solution: Diagnose and replace the faulty sensor(s).
  • Estimated Cost to Fix: $200 - $800+ per sensor, including labor.
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Car has difficulty starting, or the battery drains quickly. Could be caused by a parasitic drain or a faulty battery.
  • Solution: Diagnose the source of the drain and repair it. Replace the battery if necessary.
  • Estimated Cost to Fix: $150 - $500+ for diagnosis and repair; $200 - $400+ for a new battery.
  • Recalls: None Found

Exterior

• No Issues Found

Interior

• Seat Creaking/Rattling
  • Description/Symptoms: Creaking or rattling noises coming from the seats, especially during acceleration or braking.
  • Solution: Tightening or lubricating the seat frame components. In some cases, replacement of the seat frame may be necessary.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Summary

The 2022 Mercedes-Benz A45 AMG S, while highly praised for its performance, can be prone to some issues. The engine and transmission can experience problems requiring costly repairs, such as turbocharger failure or rough shifting, and these are considered the most serious and potentially expensive to address. Electrical issues with the infotainment system and sensors are also common, though often resolved with software updates or sensor replacements. Suspension issues can also contribute to issues that decrease drivability. While the car is generally reliable, owners should be aware of these potential problems and budget accordingly for maintenance and repairs.