Hyundai-Kia E-GMP (Ioniq 5, Ioniq 6, EV6) engine: faults and reliability

• Ioniq 5 and EV6 58 kWh, rear-wheel drive, 170 hp (2021-2024)

  2021–2024 · 170 hp

  With caution

  No own faults documented, but it falls within the ICCU campaigns (production from 2021 to early 2024): check that they have been carried out.^[1][7]

• Ioniq 5 and EV6 72.6 kWh and 77.4 kWh, rear-wheel drive, 218-229 hp (2021-2024)

  2021–2024 · 218–229 hp

  With caution

  It is the version with the most ICCU and AC charging testimonies in the listings; the ICCU campaign covers production up to February 2024, so check it by chassis number.^[1][3][8]

• Ioniq 5, Ioniq 6 and EV6 77.4 kWh, all-wheel drive, 306-325 hp (2021-2024)

  2021–2024 · 235–325 hp

  With caution

  Same ICCU and same campaigns as the rear-wheel-drive versions; the testimonies are few but repeat the electrical alert warnings.^[1][9]

• Ioniq 6 53 kWh, rear-wheel drive, 151 hp (2023-present)

  since 2023 · 151 hp

  With caution

  No own data on this version; it shares the platform's ICCU, which has a campaign until April 2024 on the Ioniq 6.^[1][6]

• Ioniq 5 and EV6 with 84 kWh battery, facelift (2024-present)

  since 2024 · 228–325 hp

  Buy

  The ICCU campaigns close with production from February to April 2024, and no documented faults have been found in these units, although they are few and recent.^[1][10]

Buy: No known serious faults, or they have already been corrected, in this version. With caution: Worth buying if something specific is verified: history, a replaced part or a completed campaign. Avoid: High risk of a serious fault that is hard to check for or prevent.

1. 1High severityFrequency: CommonPower electronicsFaulty ICCU: 12 V battery drains, charging fails and power is lostThe ICCU, which combines the on-board charger and the converter that powers the 12 V system, can fail on the Ioniq 5, Ioniq 6 and EV6: it cuts AC charging, drains the 12 V battery and, in the worst case, the car loses power and stops. Hyundai and Kia have recalled units built from 2021 to 2024.Repair: €2,000–€5,000
2. 2High severityFrequency: RareTraction batteryFaulty traction battery module or cellsOn some Ioniq 5 and EV6 the battery management system detects a faulty module or cell block, limits power or immobilises the car, and the repair requires replacing the module. These are isolated testimonies from one listing, with no campaign or study behind them.
3. 3High severityFrequency: RareElectric motor and reduction gearWhine from the reduction gear or electric motor and bearing wearSome Ioniq 5 and EV6 owners describe a whine or whistle from the reduction gear that increases with speed and, in one EV6 case, replacement of the motor or reduction gear at 19,000 km. It is a rare problem, based only on listing testimonies.
4. 4Medium severityFrequency: RareChargingIoniq 6 charging port cover and panel: opens by itself or may come offOn the Ioniq 6 the charging port cover can open by itself with the car parked, or close badly, and a 2026 recall covers the risk of the outer panel coming off while driving. The evidence is a single listing with few testimonies.

Severity colours: low, medium, high, critical. How we rate them

Manufacturer

Hyundai Motor Group

Family

E-GMP

Type

Electrical

Engine

Síncrono de imanes permanentes en el eje trasero; segundo motor delante en las versiones de tracción total

Battery

53–84 kWh

Power

151–325 hp

Peak torque

605 Nm

Production

since 2021

Makes

Hyundai and Kia

Technical data^[4][5][6]

1. 2021–2024

   Ioniq 5 and EV6 58 kWh, rear-wheel drive, 170 hp (2021-2024)

   58 kWh battery and a permanent-magnet synchronous motor on the rear axle (125 kW, 350 N·m). It is the platform's entry version on the Ioniq 5 and EV6 at launch.^[4][5]

2. 2021–2024

   Ioniq 5 and EV6 72.6 kWh and 77.4 kWh, rear-wheel drive, 218-229 hp (2021-2024)

   On the Ioniq 5 the 72.6 kWh, 218 hp battery was replaced in April 2022 by a 77.4 kWh, 228 hp one; the long-range EV6 uses 77.4 kWh. Same rear permanent-magnet motor.^[4][5]

3. 2021–2024

   Ioniq 5, Ioniq 6 and EV6 77.4 kWh, all-wheel drive, 306-325 hp (2021-2024)

   Adds a second motor on the front axle (605 N·m combined; 235 hp with the 58 kWh battery, 306 hp with 72.6 kWh and 325 hp with 77.4 kWh). The Ioniq 6 arrived in 2022 with 77.4 kWh and 325 hp.^[4][6]

4. since 2023

   Ioniq 6 53 kWh, rear-wheel drive, 151 hp (2023-present)

   Entry version of the Ioniq 6 with a 53 kWh battery and 111 kW (350 N·m).^[6]

5. since 2024

   Ioniq 5 and EV6 with 84 kWh battery, facelift (2024-present)

   The 2024 facelift replaces the 77.4 kWh battery with an 84 kWh one (228 hp in rear-wheel drive, 325 hp in total); the Ioniq 5 adds a 63 kWh entry battery. The ICCU of units built after the campaigns has no public fault data yet.^[4][5][7]