The GLS 400d is specced with a 9 speed automatic transmission, airmatic suspension, powered leather seats, Harman Kardon premium surround sound system, Push-start ignition, dual front & side impact curtain airbags, Pre-safe system for anticipatory occupant protection, ISOFIX child seat anchorage points, heated front seats, Electrically folding 3rd row seats, adaptive headlights, linguatronic voice control system, AMG body styling smartphone integration, attention assist system, and hill start assist system.