The C4 Picasso range offers four advanced Euro IV compliant engines, which can return up to 50mpg on the combined cycle, CO2 emissions from as little as 150g/km and top speeds of up to 121mph.  

Two 16V petrol engines, the 127bhp 1.8i and 143hp 2.0i are accompanied by 110bhp 1.6HDi and 138bhp 2.0HDi diesel engines

Source : http://www.worldcarfans.com