BMW Série 8 G14/G15 (2018 – 2025)

Reliability score : 8.5/10

The BMW 8 Series (G14 Convertible, G15 Coupe, and G16 Gran Coupe) marks the return of the legendary 8 Series nameplate, effectively replacing the 6 Series. Positioned as BMW's flagship grand tourer, it blends high-end luxury with formidable performance. Built on the modular CLAR platform, it features advanced technology, standard adaptive suspension, and predominantly xDrive all-wheel-drive systems (though sDrive rear-wheel drive is available on base models). A mid-cycle facelift (LCI) was introduced in 2022, bringing a standard illuminated kidney grille ('Iconic Glow'), a larger 12.3-inch infotainment screen, and minor aesthetic tweaks. Overall, the G1x generation has proven to be significantly more reliable than its predecessors, largely thanks to the exceptional B58 inline-6 engine and

✅ Strengths

The B58 inline-6 engine (840i) offers an unbeatable mix of performance, efficiency, and reliability.
ZF 8-speed automatic transmission is flawless in both daily driving and spirited runs.
Exceptional interior build quality, materials, and sound insulation.
iDrive 7 system is highly intuitive, stable, and features excellent physical controls.
xDrive system provides outstanding all-weather traction and rear-biased driving dynamics.

⚠️ Weaknesses

Steep depreciation curve, especially for the V8 models (M850i, M8).
Heavy curb weight (often exceeding 2,000 kg) leads to accelerated tire and brake wear.
Rear seats in the Coupe (G15) and Convertible (G14) are practically useless for adults.
V8 engines (N63/S63) still suffer from high thermal stress, leading to long-term plastic/gasket brittleness.
Complex electronics and active grille shutters can be expensive to repair out of warranty.

🎯 Verdict

The BMW 8 Series (G14/G15/G16) is a triumph in the modern grand touring segment. If reliability and running costs are your primary concerns, the 840i (B58) is the absolute best choice; it provides more than enough power for the chassis while avoiding the thermal and maintenance headaches of the V8s. The M850i and M8 offer intoxicating power and sound, but they must be purchased with a comprehensive warranty or a significant maintenance budget, as the 'Hot-V' architecture will inevitably require expensive gasket and cooling system work as the mileage climbs. Buy the 840i with confidence; negotiate hard and inspect thoroughly if opting for the V8.