I strongly believe that the Lancia Delta S4 Group B prototype has to be the nastiest, deadliest and most potent automobile ever created by a major car company, mostly because it’s powered by a 1.8-liter four-cylinder engine built by crazy people.
The good folks at Goodwood dug up this video from the depths of YouTube, which appears to be shot by Abarth during a secret shakedown of their S4 prototype in 1984.
Driven by Finnish legend Markku Alén, the flat black Lancia does exactly what it needed to in order to have a shot against Audi’s turbo five and Peugeot’s equally bonkers 205 T16: spool up the air with its twin-charged system to get at least 550 horses out of 1.8 liters, even at lower boost.
Is it the scariest engine? I think so. How about you?
Hit me with the supercharged straight-eights of the Nazis or the madness that is Mazda’s four-rotor Wankel, but at the end of the day, nothing would make me crap my pants faster than hearing that super- and turbocharged four banger behind my back.