BMW Série 7 G11/G12 (2015–2022) (2015 – 2022)

Reliability score : 7.8/10

The BMW 7 Series G11 (short wheelbase) and G12 (long wheelbase) represents the pinnacle of luxury and technology from the Bavarian manufacturer during this period. Introduced in 2015, it innovates with its 'Carbon Core' structure integrating carbon fiber reinforced plastic (CFRP) to reduce weight and increase rigidity. The 2019 facelift (LCI) generated much discussion with the adoption of an oversized grille, but brought major technological updates (iDrive 7.0) and revised powertrains. Although demand for petrol and plug-in hybrid has increased, diesel powertrains (B57 family) remain the preferred choice in Europe for high-mileage drivers thanks to immense torque and remarkable efficiency. It is a technological showcase, which implies maintenance and repair costs commensurate with its stat

✅ Strengths

⚠️ Weaknesses

🎯 Verdict

The BMW 7 Series G11/G12 is a formidable touring machine, offering a rare comfort/dynamism compromise in this segment. For high-mileage drivers, the 730d is the master choice: its B57 engine is a masterpiece of efficiency, provided that the EGR valve recall has been performed and intake cleaning is planned. The 740d offers appreciable extra power but adds complexity. Avoid the 750d out of warranty. If you drive less, the 740i (B58) is the safest and most reliable choice in the entire range. Avoid V8s (750i) from before 2019. Buying such a used vehicle requires a substantial maintenance budget (air suspension, star-marked tires, electronics): negotiate firmly and prioritize a model with a clear service history within the BMW network.

Common issues

Encrassement/défaillance de la vanne EGR et de son refroidisseur Medium
🔧 80 000 – 150 000 km
💶 700 – 1 300 €
Vérifier l'historique d'entretien, privilégier les trajets longs réguliers.
Encrassement du FAP (Filtre à Particules Diesel) Medium
🔧 100 000 – 200 000 km
💶 1 500 – 3 000 € (remplacement)
S'assurer de trajets autoroutiers réguliers pour permettre la régénération.
Défaillances du système AdBlue (SCR) Medium
🔧 70 000 – 140 000 km
💶 600 – 1 600 € (capteur, pompe ou réservoir)
Utiliser un AdBlue de qualité et éviter de rouler avec un niveau bas.
Problèmes de suspension pneumatique (compresseur ou boudins) Medium
🔧 100 000 – 180 000 km
💶 900 – 2 200 € (par essieu)
Vérifier l'assiette du véhicule à l'arrêt et l'absence de bruits anormaux.

Estimated maintenance costs

Oil change £150 – 280
Timing chain £1 800 – 3 500 (si nécessaire, non routinier)
Complete brakes £750 – 1 400
Estimated annual budget £900 – 1 800

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