Looking at the numbers provided by Buick, the 2.0 - liter engine's
peak twisting force of 260 pound - feet of torque kicks in at 2,000 rpm, which gives the impression of a nice and flat torque curve.
However, true to the adage that you can't beat cubic inches, the RS4 retains the torque advantage as
its peak twisting force of 430Nm eclipses the M3's tally by a full 30Nm.
Not exact matches
The Range Rover Sport uses a 5.0 - litre Supercharged V8 motor that belts out 510 PS of
peak power and 625 Nm of
twisting force.
The real - world effect of the torque kick that
forced induction delivers is that at normal road speeds (
peak torque comes from just 1700rpm), the new cars have around 40 per cent more
twist on tap than their predecessors.
If there is any criticism to have, it's that the
peak torque output on both 3.0 - liter choices isn't available at lower revs, meaning you'll need to wring the six - cylinder unit out a bit before you have access to all the Jaguar XF's
twisting force.