Hyundai Ioniq AE
Weaknesses, engine ratings and buying advice
Engine Overview
The Hyundai Ioniq AE is available with 2 engine variants — from 105 to 204 hp.
The Hyundai Ioniq Hybrid (Benziner Hybrid, 141 PS) has the G4LE (1.6L GDi Hybrid (Smartstream)) — rated: "Be Careful", 6 known weaknesses.
The Hyundai Permanentmagnet-Synchronmotor (Elektro, 120 PS) has the EM10 (Permanentmagnet-Synchronmotor) — rated: "Be Careful", 7 known weaknesses.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| 12V battery drains: control unit does not enter standby A control unit (often the multimedia or BlueLink module) does not enter standby mode and fully discharges the 12V battery. The vehicle then won't start even with a full HV battery. Symptoms: Vehicle won't start after extended standing; battery at only 7.6V despite recent use; audible noises after locking from 60,000 km | Low | |
| High-voltage battery — cell defects and short circuit Some Ioniq AE EV models show internal high-voltage battery cell defects with short-circuit risk. Hyundai initially limited charging capacity to 90%; affected vehicles received replacement batteries. Symptoms: Sudden range loss, charging stops before 100%, HV battery fault message, vehicle not ready to start from 50,000 km | High | |
| Charge port lock blocked: plug cannot be released The charge port lock actuator fails and traps the charging plug in the vehicle. Usually resolvable via the manual emergency release lever, but the actuator then needs replacement. Symptoms: Charging plug cannot be pulled out after charging; charge port error message; locking click absent from 80,000 km | Low | |
| Hybrid system warning due to communication fault Communication faults between the petrol and electric motor trigger the 'Check hybrid system' warning. Vehicle loses hybrid function and judders; the affected control unit often needs replacement. Symptoms: 'Check hybrid system' warning on dashboard; judder while driving; reduced drive; vehicle runs on combustion engine only from 100,000 km | High | |
| Charging plug lock jams or blocks The charging plug lock on the Ioniq AE sticks; the plug cannot be released. Problem mainly affects pre-facelift models up to 2019. Mechanical emergency release via wheel arch as workaround. Symptoms: Charging cable cannot be unplugged after charging session, lock does not respond from 60,000 km | Low | |
| 12-volt auxiliary battery drains while parked A control unit fails to enter standby mode and drains the 12-volt battery overnight. Causes include faulty door contact switches, hung multimedia systems or BlueLink server connections. Symptoms: Vehicle won't start in the morning, 12V battery completely flat, control units unresponsive from 40,000 km | Low |
Top Reported Issues
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Known Problems and Issues
A total of 23 weaknesses have been documented for the Hyundai Ioniq AE (2016–2022) — 13 engine-related and 10 vehicle-related. Typical issues affect Electronics, Brakes, Interior, Other.
Ioniq (G4LE, 2016–2019) — Be Careful: Hybrid Battery Cooling Fails at High Ambient Temperature, GDI Direct Injection Causes Intake Valve Carbon Buildup, Elevated Oil Consumption from Piston Ring Tolerances. Power: 105 PS.
Ioniq (EM10, 2016–2019) — Be Careful: Electric motor bearing wear from electrical current, 12V battery discharge, Traction battery capacity loss from DC fast charging. Power: 120 PS.
Ioniq (EM10, 2019–2022) — Be Careful: Electric motor bearing wear from electrical current, 12V battery discharge, Traction battery capacity loss from DC fast charging. Power: 136 PS.
What to watch out for with the Hyundai Ioniq? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Hyundai Ioniq AE have? +
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Last updated: February 2026 · All information without guarantee