Renault Koleos II (HZG) (2016 – 2023)

Reliability score : 7.8/10

The Renault Koleos II (code HZG), marketed in Europe from 2017, marks a complete break with the first generation. Based on the Renault-Nissan Alliance's modular CMF-C/D platform, it is the technical cousin of the Nissan X-Trail (T32) and is manufactured in South Korea by Renault Samsung Motors (where it is sold as the Samsung QM6). Positioned as a D-segment family SUV, it opts to offer only 5 seats to prioritize rear legroom and boot volume, unlike its direct competitors. It benefited from two minor facelifts (Phase 2 in 2019, Phase 3 in 2021). Designed to be a global vehicle, it emphasizes ride comfort and a premium presentation (Initiale Paris trim).

✅ Strengths

Exceptional rear passenger space (legroom)
Suspension comfort and highway sound insulation
Overall mechanical reliability of dCi engines (excluding depollution peripherals)
Highly effective All Mode 4x4-i system (Nissan origin) on snow/mud
Very favorable price/equipment ratio in the used market

⚠️ Weaknesses

Absence of a 7-seater version (reserved for the Espace or Nissan X-Trail)
CVT X-Tronic gearbox that smooths out sensations too much and makes the engine rev loudly under strong acceleration
Reliability of the AdBlue system on Blue dCi versions (post-2018)
Aging and slow R-Link 2 infotainment system on early model years (2017-2018)
Sluggish road behavior, focused on comfort at the expense of dynamism

🎯 Verdict

The Renault Koleos II is an excellent used car choice for families looking for a comfortable, premium, and affordable large 5-seater SUV. If you're aiming for a diesel engine, the 2.0 dCi 175 hp (before 2019) is the best buy: its engine block is virtually indestructible. More recent 'Blue dCi' versions (150 and 190 hp) offer better driving pleasure but are plagued by the chronic fragility of their AdBlue system, a costly problem out of warranty. Regardless of the chosen model, the longevity of the automatic CVT gearbox will depend on rigorous maintenance (oil change) that the Renault network often tends to neglect. Buy with full knowledge of the facts.

Common issues

Dysfonctionnement du système AdBlue (SCR) High

🔧 80 000 – 150 000 km

💶 800 – 2 000 €

Utiliser AdBlue de qualité, éviter de rouler réservoir vide, vérifier les rappels.

Encrassement ou défaillance du filtre à particules (FAP/DPF) Medium

🔧 100 000 – 180 000 km

💶 600 – 1 800 €

Privilégier longs trajets, vérifier régénérations, éviter l'huile non conforme.

Problèmes de vanne EGR (Recirculation des Gaz d'Échappement) Medium

🔧 70 000 – 140 000 km

💶 400 – 800 €

Conduite régulière sur autoroute, entretien moteur régulier.

Usure prématurée ou défaillance de la transmission CVT (X-Tronic) High

🔧 100 000 – 200 000 km

💶 3 000 – 6 000 €

Vidange régulière de l'huile de boîte, éviter conduite agressive.

Estimated maintenance costs

Oil change	£70 – 130
Timing chain	£850 – 1 700
Complete brakes	£280 – 550
Estimated annual budget	£650 – 1 200

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