2022 Mercedes-Benz EQA300

The 2022 Mercedes-Benz EQA 300 is an all-electric compact SUV offering a blend of luxury and efficiency. It is equipped with a dual-motor all-wheel-drive system producing 225 horsepower and 288 lb-ft of torque. There is also an EQA 250 available with a single motor. Owners appreciate the EQA’s comfortable ride, stylish interior, and the smooth, quiet operation of its electric powertrain. Some common dislikes include the range limitations compared to larger EVs, infotainment system complexity, and rear passenger space.

Electric Motor

Dual Motor (EQA 300)

• Motor Overheating
  • Description/Symptoms: Reduced power output, warning messages on the dashboard, and potential for complete motor shutdown under heavy load or during extended periods of driving in hot weather.
  • Solution: Software update to optimize cooling system performance; replacement of the motor’s cooling fan; installation of an improved cooling system.
  • Estimated Cost to Fix: Software update (free or minor fee at dealer); Fan replacement $300 - $700; Cooling System Replacement $1000 - $3000
  • Recalls: None Found

Battery

• Reduced Range Over Time
  • Description/Symptoms: Gradual decrease in the vehicle’s advertised range despite consistent driving habits and ambient temperatures.
  • Solution: Battery management system software update, individual battery cell replacement, or full battery pack replacement.
  • Estimated Cost to Fix: Software update (free or minor fee at dealer); Individual cell replacement $500 - $2000; Full pack replacement $10,000 - $20,000+
  • Recalls: None Found
• Charging Issues
  • Description/Symptoms: Inability to charge at certain charging stations (AC or DC), slow charging speeds, or complete failure to charge.
  • Solution: Check the charging cable and port for damage. A software update may address communication issues with the charging station. In some cases, replacing the onboard charger is necessary.
  • Estimated Cost to Fix: Software update (free or minor fee at dealer); Onboard charger replacement $1,000 - $3,000
  • Recalls: None Found

Electrical System

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The MBUX infotainment system becomes unresponsive, freezes, or restarts unexpectedly.
  • Solution: Software update. If the problem persists, the head unit may need to be replaced.
  • Estimated Cost to Fix: Software update (free or minor fee at dealer); Head unit replacement $1,500 - $3,000+
  • Recalls: None Found
• Sensor Malfunctions (Parking Sensors, Driver Assist)
  • Description/Symptoms: Erratic behavior or complete failure of parking sensors, lane keep assist, or other driver-assistance features.
  • Solution: Recalibration of the affected sensor, replacement of the faulty sensor.
  • Estimated Cost to Fix: Recalibration $100 - $300; Sensor replacement $300 - $800 per sensor
  • Recalls: None Found
• 12V Battery Drain
  • Description/Symptoms: The vehicle’s 12V battery (used for auxiliary functions) drains prematurely, leading to starting problems or system malfunctions.
  • Solution: Identify and repair parasitic drain, replace the 12V battery.
  • Estimated Cost to Fix: Diagnosis & repair $100 - $500; Battery replacement $200 - $400
  • Recalls: None Found

Interior

• Rattling Noises
  • Description/Symptoms: Various rattling sounds coming from the dashboard, door panels, or rear cargo area while driving on uneven surfaces.
  • Solution: Add padding, tighten loose fasteners, or replace defective trim pieces.
  • Estimated Cost to Fix: $100 - $500+ depending on the source of the noise.
  • Recalls: None Found
• Seat Creaking/Squeaking
  • Description/Symptoms: Driver or passenger seat emitting creaking or squeaking noises during movement or weight shifts.
  • Solution: Lubricate seat tracks and hinges; tighten or replace loose bolts; replace defective seat components (springs, frames).
  • Estimated Cost to Fix: Lubrication and tightening $50 - $200; Component replacement $200 - $800+
  • Recalls: None Found

Exterior

• Tail Light Condensation
  • Description/Symptoms: Moisture buildup inside the tail light housings.
  • Solution: Replacement of tail light housing with improved sealing.
  • Estimated Cost to Fix: $300 - $800 per tail light
  • Recalls: None Found
• Trim Pieces Coming Loose
  • Description/Symptoms: Exterior trim pieces (around windows, bumpers, or side skirts) detaching or becoming loose.
  • Solution: Re-attach trim pieces with new adhesive or clips; replace damaged trim pieces.
  • Estimated Cost to Fix: $100 - $500+ depending on the trim piece and damage.
  • Recalls: None Found

Summary:

The 2022 Mercedes-Benz EQA 300 experiences some common issues, largely related to its electrical systems, including the infotainment system and battery management. Motor overheating can be a concern in certain driving conditions. Interior rattles and seat noises can detract from the luxury experience. Exterior issues, such as taillight condensation and loose trim, also arise. The severity of these issues ranges from minor inconveniences to potentially costly repairs. Software updates often address some problems, but physical component replacements, especially within the electrical systems and battery, can be expensive. Potential buyers should be aware of these potential issues and inquire about service history when considering a used EQA 300.