a hundred in less than six seconds

A head turner for sure. Sleek. Stunning. A great supercar. Much research and development went into the Jaguar C-X75
C-X16 concept drawing

It has 1.6-liter turbo supercharged four-cylinder engine. The  C-X75 also packs two electric motors. Together, these power houses churn out a whopping 850 horsepower. 

Jaguar C-X75

The gas-powered engine producing 502 horsepower and the electric motors producing 390 horsepower, this enables the C-X75 to hit 100 mph in less than six seconds.

c-x75 four-cylinder engine is light-weight
The C-X75 4-cylinder engine block
The C-X75 concept engine: an engineering marvel

 Luxury Launches was the source for this entry.