Armored Utility Car M201-7

M20: General
Date of first acceptance July 1943 Total acceptances 3,791
Manufacturer Ford Motor Co. Crew 6 men
M20: Dimensions
Combat weight 15,650lbs
Height 91"
Length 197"
Width 100"
Tread 76"
Wheelbase Front to center axle: 80"
Front to rear axle: 128"
Front to center axle: 200cm
Front to rear axle: 325cm
Ground clearance 11.5"
Ground pressure, 3" (7.6cm) penetration 10.5psi
M20: Armament
Type Mount Ammunition Traverse Elevation
.50cal M2HB MG Flexible on mount M49, M49A1, or M66 1,000 rounds 360°
+80° to -20°
M20: Armor
Rolled homogeneous steel
Location Thickness Angle from vertical
Upper front .75"
Middle front .50"
Lower front .625"
Upper sides .375"
Lower sides .375"
Rear .375"
Front top .25"
Rear top .25"
Floor .25"
M20: Automotive
Engine Hercules JXD; 6 cylinder, 4 cycle, in-line gasoline
Horsepower Net: 110@3,200rpm Torque Net: 220 ft-lb@1,150rpm Fuel capacity 54gal
Transmission Warner Gear synchronized, selective gear, 4 speeds forward, 1 reverse
Steering Steering wheel
Brakes Hydraulic, internal expanding
M20: Suspension
Type Road wheels Shock absorbers
Semi-elliptic leaf spring 3/side On each wheel
M20: Performance
Max level road speed 55mph
Max trench 18"
Max grade 60% Angle of approach 54°
Angle of departure 39° Max vertical obstacle 12"
Min turning diameter 56'
Max fording depth 24"
Cruising range ~350mi, roads
~560km, roads

The M20 was standardized as the armored utility car M10 in April 1943, but the designation was changed to M20 to avoid confusion with the 3" GMC M10, alongside which the M20 was to serve in tank destroyer units. The M20 was based on the M8 armored car, and essentially replaced the latter's gun turret with a .50cal MG ring mount. The M20 used the ring mount M49 or M49A1 until August 1944, when production switched to the ring mount M66. . The later M49A1 added a a deflector shield and a skate-type backrest for the gunner, and substituted a different carriage with a connecting stabilizer. The M66 mount used roller-bearing construction, and the inner ring was rotated to traverse the weapon. A back rest was provided to allow the operator to use his whole body to move the gun. November 1944 saw the addition of a second generator in M20s fielding two radios. Improvements to the M8, such as stowage bins and stronger front leaf springs, were also grafted onto the M20 during production.

Home       Vehicle list       Top



  1. Hunnicutt, R.P. Armored Car: A History of American Wheeled Combat Vehicles. Novato, CA: Presidio Press, 2002. Reprinted from Armored Car, R.P. Hunnicutt ©2002, available from Presidio Press, 505B San Martin Drive, Suite 160, Novato, CA 94945.
  2. TM 9-743 Light Armored Car M8 and Armored Utility Car M20. Washington, DC: War Department, 21 February 1944.
  3. Crismon, Fred W. U.S. Military Wheeled Vehicles. Minneapolis: Victory Publishing, Ltd., 2001.
  4. TM 9-2800 Standard Military Motor Vehicles. Washington, DC: War Dept., 1 Sep 1943.
  5. Gill, Lonnie. Tank Destroyer Forces--WWII. Paducah, KY: Turner Publishing Co., 1992.
  6. Catalogue of Standard Ordnance Items, 2nd edition 1944, volume 1. Washington, DC: Office of the Chief of Ordnance Technical Division, 1 June 1945.
  7. Sola, Samuel, Vincent Bobkowski, and Kara Crocker. Weapon Mounts for Secondary Armament. Santa Monica, CA: G. O. Noville & Associates, Inc., April 1957.

Last updated 17 May 2023.
Questions? Comments? Corrections? Email me
© Copyright 2012-23 Chris Conners