The Eon does 6000 rpm at 35 km/h.
Your typical 1.6 liter car does 6000 rpm at 50 km/h.
Usually, 1.3 to 1.6 liter cars need to do 2500-3000 rpm when climbing parking ramps... About 20-25 km/h. At such speeds, the Eon is at 4000 rpm, where it is making peak torque.
You can't climb a steep ramp at 5 km/h unless you're driving a car with a REALLY big engine with REALLY short gears... Even for a diesel, 5 km/h is typically just 500 rpm...
Like I said... Only problem on ramps is you need to rev it hard when you let off the clutch or it will bog. Power per se is not a problem. I drove it up a steep hill behind a smoking tricycle in first gear at just 15 km/h and had no problems at all.