Hardly the same time, the C3 was launched in 2002, the C1 came along three years later. The C1 is the same car (styling aside) as the Peugeot 107 and Toyota Aygo.
The (Toyota) one-litre petrol engine might be gutless, but it is still faster than the 1.4 PSA HDi diesel also available.
Not sure how a 1.5 106 (56hp, 70lbft, 18.3s 0-62) can be described as more gutless than the 1.0 C1 (67bhp, 69lbft, 13.7 0-62) :P