Fiat India Pvt. Ltd (FIL) today unveiled the diesel version of the Palio and Adventure models, both of which hail from its Project 178 family. "This signifies 178's debut in the diesel segment,'' Mr Alberto Montanari, Chairman & Managing Director, FIL, said. The cars sport a 1.9-litre 'D-Tech' engine, capable of 63 bhp and 12.2 kg torque. It has been tested for over 3,00,000 km and can comply with Euro III norms.