2. Improvements under the bonnetThe new Alto 800 has done some major changes under the hood. Maruti has re-engineered its engine to add more power, torque and fuel economy to its current model. The new Alto 800 is powered by slightly technologically advanced F8D-3 cylinder, 796cc petrol engine, that gives enhanced peak power to 49 PS (up from 47 PS) at 6,000 rpm. At the same time, the new model delivers more torque, an additional 15 per cent over the F8D model, with 69 Nm of peak torque instead of 62 Nm. Fuel injection is standard and the engine is mated to a 5 speed manual gearbox. The company has also improved its gearbox with detent pin technology and diagonal shifting. This means that shifting from gears like 2nd to 3rd and 4th to 5th will be effortless. The company claims that even with three adults aboard, the Alto 800 managed to pull in all its gears, thus making it peppy in town. It also claims to attain the 0-100 kmph acceleration in about 18.5 seconds.