Mercedes E55 AMG
In 1998, AMG released its ultimate version of the standard E-Class in the form of the E55 AMG. From the outside, the E55 AMG looked like any other E-Class with only minimal changes. But underneath the body, a 5.4-liter supercharged beast was waiting to be released (via Car and Driver).
With 349 hp and 391 lb.-ft of torque, the E55 AMG could accelerate from 0 to 60 mph in just 5.4 seconds. This was late ’90s Porsche Turbo territory. AMG built over 12,000 examples, which makes them relatively plentiful today. You can pick up a decent example for around $15,000 today, which is a steal.