The FXX uses some technology developed from the Enzo Ferrari, and combines it with some new developments from Ferrari and its suppliers. However, the car is only a part of the overall program. Customers pay £2 million, but are only allowed to drive the car on special track days which are approved by Ferrari. After they drive the car, the owners are entitled to be briefed by Ferrari on the car's performance. Ferrari's sister company, Maserati, has developed a similar car, the MC12 Corsa. It is suspected that Ferrari closely guards the FXX due to the car incorporating various advanced technology from Ferrari's F1 team that the company did not want being inadvertently released to rivals.

An evolution of the Enzo, in essence, the FXX shares some components with the original car, but numerous, significant developments are unique to the FXX.

The FXX's engine is based on Enzo's, but displacement has been increased to 6.3L from 6L. Output has been boosted from

the Enzo's 660 bhp, to 809 bhp at 8,500 rpm.