Performance, power and 0-100 km/h
2025 GMC Sierra 1500 SLE 2.7L Turbo has the quicker recorded 0-100 km/h time at 6.5 seconds, compared with 7.5 seconds for 2025 RAM 2500 Limited 6.7L Cummins. 2025 RAM 2500 Limited 6.7L Cummins has the higher listed output at 370 hp; 2025 GMC Sierra 1500 SLE 2.7L Turbo is rated at 310 hp, a difference of 60 hp. The torque figures follow 2025 RAM 2500 Limited 6.7L Cummins at 1,084 Nm and 2025 GMC Sierra 1500 SLE 2.7L Turbo at 583 Nm. These figures describe straight-line potential only; they do not establish braking performance, ride quality, steering response or durability under repeated hard use.
Range, battery, charging and efficiency
Range and energy-use figures are either not shared by both cars or not directly comparable across these powertrain types.
Dimensions, cargo space and towing
2025 RAM 2500 Limited 6.7L Cummins carries the higher towing rating at 8,256 kg, while 2025 GMC Sierra 1500 SLE 2.7L Turbo is listed at 4,173 kg. 2025 RAM 2500 Limited 6.7L Cummins is 182 mm longer overall. Exterior size is not a benefit by itself: a longer body may create useful room, but cargo shape, rear-seat space and ease of parking still require a physical inspection.
Price and overall assessment
2025 GMC Sierra 1500 SLE 2.7L Turbo has the lower listed starting price at $44,900, compared with $74,470 for 2025 RAM 2500 Limited 6.7L Cummins. The measured categories split evenly, so the better choice depends on which attributes matter most. The assessment is based on the specifications shown here; it is not presented as a two-car road test.