Tata Harrier Powertrain: The Harrier is powered by a 2.0-litre 4-cylinder turbo-diesel engine that churns out 140PS of power and 350Nm of torque. It is the same engine under the bonnet of the Jeep Compass, where it is tuned for more power. Currently, Tata only offers a 6-speed manual transmission that sends powers to the front wheels of the Harrier. A 4x4 model is not to be expected anytime..