"Top torque" refers to the highest amount of rotational force or power that an engine can generate, usually at its maximum capacity. It indicates how strong the engine is and its ability to exert force to move or perform heavy tasks. Full definition
The diesel mill is good for maximum power output of 100bhp at 3750 rpm along with top torque of 240Nm between 1600 to 2800 rpm. (auto.ndtv.com)
On the other hand the sub-four metre MPV, Datsun Go + will come powered by a 1.2 Litre petrol mill that will produce 68HP peak power with top torque of 104Nm. (rediff.com)
Powering the new Legacy is a 2.2 - liter, four - cylinder, 160 - horsepower, 16 - valve, SOHC, turbocharged engine that reaches its maximum output at 5,600 rpm and grabs top torque at half that - 2,800 rpm. (articles.orlandosentinel.com)