The model will form part of Fiat's Big Smile festival, taking place in Parklife Oxford Street from 28 August to 2 September, and will house an interactive visitor experience.
As part of the activity Parklife Oxford Street will be transformed into an inner-city park, complete with deckchairs, plants and snack stalls, as well as roaming entertainers and stilt walkers.
Life-size models of the Fiat 500, 500C and 500byDiesel will also be on display.
"We are taking The Big Smile to one of the busiest areas of London and I am looking forward to bringing our special brand of fun to this wonderful city," said Fiat Group Automobiles UK marketing director, Elena Bernardelli.
"The huge Fiat 500C, and the whole event will create a great atmosphere and we're anticipating six very happy days ahead."
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