Hyundai IONIQ 6 I (CE) (2022 – 2025)

Reliability score : 8.2/10

The Hyundai IONIQ 6 (Generation I, code CE) is a 100% electric sedan based on the Hyundai-Kia group's E-GMP modular platform. Dubbed the "Electrified Streamliner" by the manufacturer, it stands out with its ultra-aerodynamic teardrop design (drag coefficient of 0.21), giving it remarkable energy efficiency and excellent highway range. It benefits from the 800-volt architecture, allowing for ultra-fast charging (10 to 80% in 18 minutes on an Ionity charger). Although praised for its comfort, soundproofing, and onboard technologies, it suffers from an impractical trunk (no tailgate) and limited rear headroom. In terms of reliability, the E-GMP platform is generally robust, but it is marred by recurring issues related to the ICCU (Integrated Charging Control Unit) and 12V battery management,

✅ Strengths

Exceptional energy efficiency (very low consumption on the highway)
800V architecture allowing ultra-fast charging (10-80% in 18 min)
High-level soundproofing and ride comfort
Royal legroom in the rear seats
Bold and distinctive design

⚠️ Weaknesses

Recurring ICCU and 12V battery issues (requiring updates/replacements)
Trunk (no tailgate) with a narrow opening and average volume (401 L)
Rear headroom penalizing for adults over 1.80m
Room for improvement in ergonomics (window controls in the center, complex touch menus)
Limited rear visibility

🎯 Verdict

The Hyundai IONIQ 6 is a brilliant electric sedan, offering formidable efficiency and some of the best charging speeds on the market thanks to its 800V architecture. It is an excellent alternative to the Tesla Model 3 for those who prioritize comfort, stylistic originality, and legroom. However, its reliability record is tarnished by the endemic ICCU (charging and 12V battery management) issue affecting the E-GMP platform. Buying used is recommended, but on one strict condition: you must imperatively verify that the vehicle has undergone all recall campaigns (software updates and/or hardware replacement of the ICCU). Favor the 77.4 kWh RWD version for the best range/price compromise.

Common issues

Décharge inattendue de la batterie 12V auxiliaire Medium

🔧 Variable, souvent en début de vie du véhicule (moins de 50 000 km)

💶 100 – 300 € (remplacement batterie 12V) ; plus si diagnostic complexe

Vérifier l'état de charge de la batterie 12V et les mises à jour logicielles.

Dysfonctionnements logiciels ou blocages du système d'infodivertissement Low

🔧 Dès l'acquisition du véhicule

💶 Généralement pris en charge sous garantie via mise à jour logicielle

S'assurer que le véhicule dispose des dernières mises à jour logicielles.

Potentiels problèmes avec l'unité de contrôle de charge intégrée (ICCU) High

🔧 Données insuffisantes pour l'IONIQ 6, rapporté sur d'autres modèles E-GMP

💶 1 000 – 2 500 € (hors garantie, pièce et main-d'œuvre)

Surveiller les alertes de charge ou de propulsion, vérifier les rappels constructeur.

Estimated maintenance costs

Complete brakes	£180 – 400
Estimated annual budget	£150 – 350

Indicative estimates (independent garage, UK market). Prices vary by region and year.