you got a relatively brand new car, kahit 1.3 lang yan it should get you out of that stiff incline without sweat. in fact, the car actually manage to pass through. the manner you handled the situation was actually the problem. i agree with the rest of what has been said, step more on the gas pedal & pump that rpm to rev more. tinipid mo lang ang gas kaya namatay ang makina and as a preparation for the climb, rev it up first to get the engine pumped up.