Throughout the years, AMG has taken some terrific Mercedes engines and tuned them to perfection ... in a standard Merc was the 302-hp (306-PS) M113 5.0-liter which came in range-topping models ...

For the first two years of the S 55 AMG (2000-2001), the M113 engine was naturally aspirated, but the supercharged version took over for the remaining five years, turning the S-Class into a ...