From the official dealers of Nissan..

According to the latest buzz, Datsun Go Plus is just available in the petrol version and there is no such information regarding the diesel trim. The petrol variant is powered by a 1198cc, DOHC, 12 Valve, 3 Cylinders in-line engine which delivers a maximum power of 67.1 बीएचपी @ 5000 rpm along with a maximum torque of 104 एनएम @ 4000 rpm. It’s engine is mated to 5-speed manual gearbox.