2021 — 2026
Dual Motor - Performance AWD
Electric
While driving on a slightly uneven road, listen for any clicking or creaking from the suspension components; in these heavier AWD models, it is worth observing if the air-sprung or adaptive dampers (if fitted) react smoothly to changes in road surface.
Check this by navigating through the MBUX infotainment settings; ensure the screen brightness and touch responsiveness are consistent, as some early H243 software builds have occasionally required a dealer-applied update for stability.
While parked, operate the panoramic sunroof (if equipped) through its full range of motion; listen for any irregular grinding or hesitation, as the seals can occasionally gather debris in our NZ climate.
Check this by inspecting the charging port door mechanism; ensure it latches and releases cleanly, as the motor assembly inside the flap can sometimes be sensitive to moisture or dust accumulation.
Routine inspection of cabin air filtration and a check on the battery management system (BMS) software version.
Consider a proactive brake fluid flush and potential inspection of the drivetrain coolant lines.
A major milestone where the condition of the drive unit mounts and suspension bushings should be formally assessed for long-term comfort.
Verify the presence of a complete Mercedes-Benz service history to maintain the integrity of the battery warranty.
Ensure the 12V auxiliary battery has been tested, as this is vital for powering the vehicle's electronic architecture.
Confirm the air conditioning system produces cold air promptly, as this is also used to manage battery temperature.
Check the tire wear patterns; dual-motor torque can lead to quicker rear-tire wear if the vehicle has been driven spiritedly.
Request a printout of the 'State of Health' (SoH) report for the high-voltage battery to ensure it aligns with the vehicle's age.
Estimated repair costs if issues arise
Because regenerative braking does most of the heavy lifting, the mechanical brakes see less use and can occasionally experience surface corrosion if not exercised. If you notice sticking, you might eventually need to budget for a caliper service or disc replacement.
The EQA 300 carries significant weight due to its battery pack. Depending on the type of roads you frequent, you might eventually need to budget for replacing suspension bushings or sway bar links if you start noticing a loose feeling in the steering.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer