Aion ES Reliability & Ownership Guide: What Buyers Should Know

The Aion ES benefits from a relatively simple EV drivetrain, which inherently reduces mechanical complexity. However, early examples have shown inconsistent battery management system performance—look for any history of range drops or charging errors. Pay attention to the electric motor for unusual whine or vibration, and check for any open recalls or service bulletins (especially related to battery cooling). A thorough diagnostic scan of the high-voltage system is recommended before purchase. Models with a full service history from an authorized GAC dealer indicate better care.

Ownership involves typical EV tasks: tire rotations, brake fluid changes, and cabin filter replacements. The battery coolant requires periodic inspection, and high-voltage cables should be checked for wear or corrosion. Many overseas markets have limited GAC service networks, so be prepared to rely on independent EV specialists or mobile technicians. Parts availability can be slow, especially for body panels and electronics. Planned maintenance intervals are longer than for combustion cars, but unscheduled visits for software glitches or charging port issues are not uncommon.

New Aion ES models typically carry a comprehensive warranty (5 years or similar) on the vehicle, with an extended 8-year coverage on the battery. However, warranty transfer policies vary by region—verify if coverage follows the car when sold used. After-sales support quality depends heavily on local dealership competence. In some countries, phone or app-based support is available, but response times can be slow. It's wise to check if there's a dedicated EV technician at the nearest service center.

The cabin uses hard plastics and cloth upholstery that hold up reasonably well but can show scuffs and stains over time. The infotainment touchscreen is responsive when new, but may develop lag after years of use; software updates are infrequent and often require a dealer visit. Real-world energy consumption can degrade by 10–15% in cold climates. Public DC fast charging works reliably, but the charging port latch is a known weak point. Expect some road and wind noise at highway speeds.

Request a battery health report via the OBD port or dealer diagnostic tool—look for state-of-health above 85% for a car with moderate mileage. Check for any signs of water ingress around the battery pack underbody or in the rear seat area. Examine the charging port for bent pins or debris. Tire tread wear should be even despite the car's weight. Test all electric window and door lock functions, and ensure the climate control system works properly (heat pump issues have been reported). Finally, drive over rough pavement to listen for suspension rattles.