8 great deals out of 91 listings starting at £3,485. Used Citroen C4 Cactus with 1.5L engine. 12 great deals out of 128 listings starting at £3,485. Used Citroen C4 Cactus with 1.2L engine. 18 great deals out of 187 listings starting at £3,889. Used Citroen C4 Cactus with 1.1L engine. 18 great deals out of 187 listings starting at £3,889. At 4,170mm long and 1,714mm wide, the C4 Cactus has the same basic area as a conventional hatchback. However, the Citroen is 1,480mm tall thanks to its raised suspension, so it has different .