SOURCE-RECORDED POWERTRAINS

Engine fitments & vehicle specifications

Browse source-recorded engine, trim, transmission and body specifications by vehicle and documented year. Market and full production coverage are not inferred.

Exact engine code: M256M

2 source configuration groups

Mercedes-Benz / 2025

GLS-Class

GLS450 4MATIC

Source engine label
M256M
Source engine power
375 hp≈ 279.6 kW
Transmission
Automatic · 9 speeds
Body
Sport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV]

NHTSA VIN specification · Market not established

Specifications & source conditions ↗

Mercedes-Benz / 2026

GLS-Class

GLS450 4MATIC

Source engine label
M256M
Source engine power
375 hp≈ 279.6 kW
Transmission
Not recorded · 9 speeds
Body
Sport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV]

NHTSA VIN specification · Market not established

Specifications & source conditions ↗