The SU-57 is a Tank Destroyer based on the American T48 57 mm Gun Motor Carriage — a 57mm M1 anti-tank gun on a modified M3 half-track chassis; the Soviet designation was applied to vehicles received under Lend-Lease. In-game it is a lightly armored tracked vehicle weighing 8.6 tonnes with a crew of four plus one passenger — driver, gunner, commander, loader, and one infantry seat. The White 160AX diesel produces 148 hp for 17.2 hp/t and 76 km/h.
The 57mm M1 is the sole weapon, with a 1x telescope sight and no stabilizer or machine guns. High mobility and a potent gun for its tier define the vehicle, at the cost of minimal protection.