There is nothing really wrong with the car, if you are happy to just drive for the sake of getting from A to B as cheaply as possible.
The engine was noisy. The boot was tiny. The power was woeful. The gear-change was notchy.
Visibility was good.The brakes were good. The seats were almost comfortable. The touch screen in car entertainment kind of passed me by, as I'm not too happy to look away from the road for long enough to fiddle about with radio stations etc.
Basically, the C1 is probably a good idea for shopping trips or short commutes.
For me, a car is a place of enjoyment, a place where it's nice to be. I drove from Farnborough to Farnham, then on to Woking and back to Farnborough. About 50 miles or so and I wouldn't really like to go much further.
We are kind of in the market for a smaller car than the C5, so that SWIMBO can get rid of her Clio and drive a "family car".
The C1 would be a step too far for me. I had thought that I could live with one of these tiny cars, but nope, I won't be downsizing THAT far any time soon.