For the S550’s first update for the 2018 model year,

the Ford Mustang’s base V6 engine was finally dropped, the V8

was uprated to 460 hp, and the old six-speed automatic made way for

a new 10-speed auto co-developed with GM. Continual adjustments

over the years saw the arrival of a High Performance 2.3L turbo-four with 332 hp,

a 5.0L V8 rerated to 450 hp for the GT, and a 470-hp 5.0L Mach 1.