Compare the Ford Fiesta 1.5 TDCi ST-Line 120 - [2017] vs Vauxhall-Opel Manta 2.0 GTE Coupe - [1982]. Find out which car is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which car has the highest top speed or is the fastest accelerating, is it the Ford Fiesta 1.5 TDCi ST-Line 120 or the Vauxhall-Opel Manta 2.0 GTE Coupe. We'll leave it up to you to decide which is your favourite.