The rattling engine sound in the vehicles are mostly because of their lesser cylinders and the engine arrangement. Nano, with its 2-cylinder 624 cc engine would produce a bit of rattling from its engine from the very beginning but the vibrations are very much reduced in the newer version of the car. The insulation and material quality has been increased and made better with time in Tata cars. Riding the vehicle on rough terrain widens the gaps between the interior fittings and body panels, which with time can cause rattling in all the cars, most probably the ones in the entry level segment as they have a bit soft suspension than the others.

Quick Facts - Tata Nano GenX