10 Of The Slowest Sport Cars Published on July 12, 2015 in Top 10 by Frédérick Boucher-Gaulin Photo: Lamborghini 6 :With looks that were inspired by a fighter plane and a melodious V12, you'd expect the Italian supercar to stand its ground against a Japanese sedan... but no. It would be left behind with a 0-100 km/h time of 6.6 seconds.