Renault Laguna III (BT0) (2007 – 2015)

Reliability score : 8.8/10

The Renault Laguna III (codename BT0 for the sedan, KT0 for the Estate wagon, DT0 for the Coupé) had a colossal mission: to make people forget the catastrophic reliability of the Laguna II Phase 1. To achieve this, Renault implemented drastic quality standards ('Excellence Renault' plan). The result is clear: the Laguna III is one of the most reliable family cars of its generation, all brands included. While its exterior design (especially the front end of Phase 1) divided opinion and hindered sales, its dynamic qualities are exceptional, notably thanks to the '4Control' four-wheel steering system (standard on GT and Initiale trims, or optional). It underwent two facelifts: Phase 2 in 2010 (more aggressive front end, darkened lights) and Phase 3 in 2013 (integration of LED daytime running

✅ Strengths

Exceptional overall reliability (especially with 2.0 dCi and petrol engines)
4Control chassis, astonishing in efficiency and safety
Unbeatable quality/price/equipment ratio on the used market
Significantly improved finish quality and material aging
Suspension comfort and sound insulation (especially on Phase 2 and 3)

⚠️ Weaknesses

Exterior design of Phase 1 often considered unappealing
Average rear passenger space for the category
Sedan boot volume a bit tight (the Estate wagon does better)
Fuel consumption of petrol engines (excluding E85)
Brand image tarnished by the previous generation (strong depreciation, although this is an advantage when buying)

🎯 Verdict

The Renault Laguna III is the archetype of a 'good deal' on the used market. A victim of its predecessor's poor reputation, it suffered a dizzying depreciation, even though it is intrinsically one of the most reliable cars of its decade. The top choice is undoubtedly the 2.0 dCi (130 or 150 hp for economy, 175 or 180 hp for dynamism), preferably associated with the 4Control chassis (GT or Initiale trim) which transforms the road handling. The 2.0 16v petrol versions (especially Bioethanol) and 2.0T are also excellent choices for those who drive less. Simply avoid diesels that have been used exclusively in the city to prevent DPF issues.

Common issues

Encrassement du Filtre à Particules (FAP) Medium

🔧 100 000 – 180 000 km

💶 200 – 500 € (nettoyage) / 800 – 2 000 € (remplacement)

Privilégier les longs trajets réguliers pour favoriser la régénération du FAP.

Vanne EGR encrassée ou défectueuse Medium

🔧 80 000 – 150 000 km

💶 150 – 300 € (nettoyage) / 300 – 600 € (remplacement)

Une vérification et un nettoyage préventif peuvent prolonger sa durée de vie.

Défaillance du turbocompresseur High

🔧 150 000 – 250 000 km

💶 1 200 – 2 500 €

Respecter scrupuleusement les intervalles et la qualité d'huile moteur.

Problèmes électroniques (carte de démarrage, UCH, capteurs divers) Low

🔧 Variable, souvent après 100 000 km

💶 150 – 600 €

Vérifier le bon fonctionnement de tous les équipements électriques avant achat.

Estimated maintenance costs

Oil change	£70 – 130
Timing chain	£1 000 – 2 200 (si remplacement nécessaire, rare sur 2.0 dCi)
Clutch	£800 – 1 500
Complete brakes	£250 – 500
Estimated annual budget	£600 – 1 200

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