In addition, the four-wheel-drive triple-differential drivetrain from the donor car has been replaced with a much simpler and lighter rear-wheel-drive transaxle, thus saving approximately from the total weight. The car weighing has a power-to-weight ratio of 480 hp/ton. In addition, the engine's specific power output is an unprecedented 181 hp/litre. The brand claims a maximum speed of while acceleration from 0 to being achieved in 3.9 seconds. All changes were aimed at simplifying many technical issues which had been chosen by Stanzani and Artioli but which Materazzi felt were "making the easy difficult by using the un-necessary".