There's a particular hill locally, in an 80 kph zone that's somewhat challenging. In the car I killed, a 63 kW 1.3 litre Toyota Yaris, I had to drop back to 3rd gear to get up it and even then it'd drop back to 70 kph near the top.
Mum's car, a 1996 Hyundai Lantra wagon, with a 95 kW 1.8 litre automatic was swapping violently between 2nd & 3rd gear to climb it & also dropped back to 70kph near the top.
My replacement car, the 1.5 litre 75 kW Mazda 2 took it in its stride in 4th gear at 75 kph where the others slowed down a bit more.