4dr Sedan, 4-spd, 6-cyl 200 hp engine, MPG: 19 City29 Highway. The standard features of the Chevrolet Impala LS include 3.8L V-6 200HP engine, 4-speed automatic transmission with overdrive, 4-wheel anti-lock brakes (ABS), air conditioning, 16 alloy wheels, cruise control, ABS and driveline traction control, 6 way power driver seat, power mirrors, power windows, and power locks.