Audi Q7 4M (2015–2025) (2015 – 2025)

Reliability score : 7.3/10

The second-generation Audi Q7, internal code 4M, was launched in 2015, succeeding the first generation (4L). It marks a major stylistic and technical break, adopting the Volkswagen Group's MLB Evo platform, shared with models like the Bentley Bentayga, Porsche Cayenne, and Lamborghini Urus. Several hundred kilograms lighter than its predecessor thanks to the extensive use of aluminum, it offers improved agility and efficiency. Positioned in the large 5 or 7-seater premium SUV segment, the Q7 4M stands out for its luxurious interior, advanced onboard technology (Virtual Cockpit, MMI Touch Response after the facelift), and a high level of ride comfort, particularly with the optional adaptive air suspension. It benefited from a significant facelift in 2019, which modernized its exterior desig

✅ Strengths

⚠️ Weaknesses

🎯 Verdict

The Audi Q7 (4M) is an excellent choice for those seeking a large premium SUV that is comfortable, technologically advanced, and well-finished. Its reliability is generally good for a vehicle in this category, but the maintenance and repair costs, which are commensurate with its high-end positioning, should not be underestimated. For diesel engines (3.0 TDI and 4.0 TDI), which are the core of the range in Europe, they offer excellent driving pleasure and controlled consumption on long journeys. However, the AdBlue system and EGR valve are major points of concern. An impeccable service history and verification of recalls (especially Dieselgate) are essential. Prioritize highway use over urban driving to preserve the DPF. Gasoline engines (2.0 TFSI and 3.0 TFSI) are rarer in Europe but offer an interesting alternative for those who drive less or prefer the pleasure of gasoline. The 3.0 TFSI is particularly recommendable for its smoothness and power. Plug-in hybrid versions (TFSI e) are relevant for mixed use with regular charging, but their complexity and the lack of long-term data on battery and hybrid system longevity warrant caution. A thorough diagnosis is crucial. In summary: BU

Common issues

Problèmes du système AdBlue (SCR) : capteurs NOx, pompe, injecteur ou réservoir défectueux. High
🔧 80 000 – 150 000 km
💶 800 – 2 000 €
Utiliser AdBlue de qualité, éviter de rouler réservoir vide, faire vérifier les codes défauts.
Dysfonctionnement de la vanne EGR et/ou du refroidisseur EGR dû à l'encrassement. Medium
🔧 100 000 – 180 000 km
💶 600 – 1 500 €
Privilégier les longs trajets réguliers, respecter les intervalles d'entretien moteur.
Défaillance du compresseur de suspension pneumatique ou fuites sur les boudins. Medium
🔧 120 000 – 200 000 km
💶 800 – 2 500 €
Vérifier l'assiette du véhicule, écouter les bruits anormaux du compresseur.
Encrassement ou colmatage du filtre à particules (FAP/DPF). Medium
🔧 100 000 – 200 000 km
💶 1 000 – 3 000 €
Effectuer des trajets autoroutiers réguliers pour permettre la régénération.
Usure ou bruit de la chaîne de distribution (V6/V8 TDI). High
🔧 180 000 – 250 000 km
💶 2 500 – 5 000 €
Écouter les bruits anormaux au démarrage à froid, respecter les vidanges avec huile homologuée.

Estimated maintenance costs

Oil change £90 – 160
Timing chain £2 200 – 4 500 (si remplacement nécessaire)
Complete brakes £550 – 1 100
Estimated annual budget £800 – 1 600

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