8. T-54/55 (USSR)

First produced in 1948. Top speed 30 mph. Range: 250 miles. The tank's V-12 water-cooled diesel engine gives a power-to-weight ratio of 14.44 horsepower per ton. Armor thickness: 203 millimeters. Primary armament: 100-mm D10T gun.

The T-54/55 scored average marks for firepower, mobility and protection. In all 95,000 T-54/55s were made, so it scored top marks for production. However, it ranked just below average for fear factor — the only reason to be afraid of this tank was because of the vast numbers produced.