The car was shown with a 1.5-litre, 108hp, four-cylinder petrol engine at the Auto Expo. Most automakers are weary of launching new products before the new BS-VI emission norms kick in.
The 1.4-litre diesel unit that does duty in the Etios twins and in the Corolla isn't BS-VI-compliant and the cost of developing a BS-VI-compliant engine would mean significant investment and would drive costs up.
And now, customers are increasingly preferring petrol cars, so the overall share of the diesel variant in total sales may be far too small to justify the large investment. A hybrid version may join the line-up soon though. You can expect the Yaris to be priced between ₹8.4 - 13.5 lakh.