The only difference between Nissan Kicks XL and XV is only of features. Nissan Kicks XV comes with Cruise Control, Engine Start Stop Button, Multifunction Steering Wheel, Rear Camera, etc which is not available in XL variant. For the complete comparison between both the variant you can click on the link
Nissan offers the Kicks with both petrol and diesel engines. The 1.5-litre petrol unit is mated to a 5-speed manual and produces 106PS/142Nm. The 1.5-litre diesel unit has an output of 110PS/240Nm mated to a 6-speed manual transmission.