Hyundai IONIQ 5 I (NE) (2021 – 2023)

Reliability score : 7.8/10

The Hyundai IONIQ 5 (Generation I - NE) marks a major turning point for the Korean manufacturer. Based on the dedicated E-GMP platform, it stands out with its 800V electrical architecture (rare at this price point), allowing for ultra-fast charging (10 to 80% in 18 minutes). Its neo-retro design inspired by the Hyundai Pony hides imposing dimensions (3-meter wheelbase) offering exceptional interior space. While driving pleasure, comfort, and onboard technologies (such as V2L) are critically acclaimed, the reliability of its early production years is marred by a recurring and major problem: the failure of the ICCU (Integrated Charging Control Unit), which manages the charging of the 12V battery. This defect can lead to an immobilizing breakdown. Once this issue is corrected via a recall, th

✅ Strengths

800V architecture allowing ultra-fast charging (10-80% in 18 min)
Giant interior space and flat floor (3-meter wheelbase)
Very practical V2L (Vehicle-to-Load) functionality to power 220V devices
High-level suspension comfort and soundproofing
Distinctive design and interior finish quality

⚠️ Weaknesses

Reliability of the ICCU (Integrated Charging Control Unit) highly problematic before recall
Absence of a rear wiper on this generation (zero visibility in rainy weather)
Large turning circle, penalizing in the city
No wireless Apple CarPlay / Android Auto on the original infotainment system
Improvable aerodynamics (0.28 Cd) impacting highway range

🎯 Verdict

The Hyundai IONIQ 5 is a brilliant, spacious electric car equipped with exceptional 800V charging technology for its segment. However, its reliability record is heavily burdened by the endemic issue with the ICCU (12V charge manager), which has caused numerous immobilizing breakdowns. Buying used is highly recommended, but on one strict condition: you must demand the maintenance history proving that the recalls concerning the ICCU and the SCU module have been carried out by Hyundai. If the 12V battery was replaced at the same time, that is a big plus. Favor the 72.6 or 77.4 kWh RWD versions for the best balance between range, cost, and tire wear.

Common issues

Panne de l'unité de contrôle de charge intégrée (ICCU) High

🔧 Variable, souvent avant 80 000 km

💶 2 500 – 4 500 € (hors garantie, souvent couverte)

Vérifier l'historique des rappels/mises à jour logicielles, surveiller la charge 12V.

Décharge inattendue de la batterie 12V Medium

🔧 Variable, peut apparaître tôt

💶 150 – 300 € (remplacement batterie, plus si diagnostic)

Surveiller les alertes, envisager un chargeur d'entretien si stationnement prolongé.

Bugs logiciels et système d'infodivertissement Low

🔧 Dès l'acquisition

💶 0 – 150 € (mises à jour gratuites, diagnostic hors garantie)

S'assurer que toutes les mises à jour logicielles ont été effectuées.

Bruits de suspension avant (coupelles, silentblocs) Low

🔧 30 000 – 70 000 km

💶 300 – 700 €

Tester le véhicule sur routes dégradées pour détecter des bruits anormaux.

Estimated maintenance costs

Complete brakes	£250 – 450
Estimated annual budget	£200 – 400

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