I believe from the factory the Rebel has like 15 or 16 hp, mine that was 12 years old at the time must have had one or two less, and it was exciting to ride around town.
I'll grant that 17 hp in a car would not be "exciting", but I bet from 0-30mph which is where this car would live would feel plenty zippy.
IMO, anything that can’t maintain highway speed up a hill is anemic by modern standards. I get that HP has become a largely meaningless metric for daily driving, but that seems like a useful baseline.
It's as much power as a Honda Rebel 250, a CBF250, an MT125, a Yamaha Vixion, an ST250, etc..., and those are gas engines that will generally only provide like 50-70% of their power.
Electric golf carts generally use 3-5hp engines. That's because for small engines, the electric advantage of always delivering the same amount of power is a huge deal.
18hp was enough for many cars. It is fine for city driving. It goes up to 100km/h, it's fine.
Also, the peak power of the motor is actually 20kW, 13kW is the sustained power, which again is more than enough for city driving.
What people notice about EV’s is really an artifact of being cars having extremely overpowered engines but ineffective transmissions to maximize the use of that power.