The Alto 800 has some changes under the bonnet as well. The model continues to be powered by the 796cc petrol engine. Maruti engineers have made changes to the hardware of the F8D engine, resulting in a power output of 47.5 BHP at 6000 RPM (3.5 BHP increase) and 69 Nm of torque at 3500 RPM (7 Nm increase). Steady progress at low speed has been the hallmark of this engine, and now it's better. Overtaking will not be challenge as now you don't need to rev hard to swift quickly.