Overview
- Mercedes‑AMG unveiled mid‑life updates for the GLE 63 S and GLS 63 on June 15–16, 2026, introducing the new M177 EVO 4.0‑litre twin‑turbo V8 with a flat‑plane crank.
- The revised engine makes roughly 603–612 hp and 850 Nm, with a 48‑volt integrated starter‑generator adding about 23 hp and extra torque to improve low‑end response.
- Regulatory‑focused hardware includes revised injection and turbocharger components plus standard particulate filtration and upgraded exhaust after‑treatment to help meet stricter emissions rules.
- Chassis and drivetrain upgrades feature AMG RIDE CONTROL+ air suspension with active roll control, strengthened driveshafts, a fully variable 4MATIC+ system and an electronically controlled rear locking differential.
- Mercedes‑AMG frames the work as a strategic shift away from plug‑in hybrid performance models toward mild‑hybrid V8s, with regional launches expected in late‑2026 to early‑2027 and final pricing and local specs still pending.