AM General M1165A1 HMMWV

In an attempt to expand the utility of the basic M998 High Mobility Multipurpose Wheeled Vehicle, the U.S. armed forces have designed several variants. The M1165 is itself a hybrid of two variants, the four-door M1097A2 and the M1113 ECV (Expanded Capacity Vehicle). The M1165, introduced in 2007, is intended for special ops use as a command and control vehicle. The basic version, or -A1, has an Integrated Armor Package installed in the form of underbody armor.

The M1165A1 carries four soldiers and 3,470 lbs. of cargo. It has a ground clearance of 17" and can ford 30" of water, or 60" with a fording kit installed. The truck burns 5.8 gallons of diesel per hour. Visibility is good.


Subassemblies: Body +4, 4 Off-Road wheels +1.

Powertrain: 142-kW improved all-wheeled drivetrain with 142-kW improved turbocharged diesel , 2,000-kWs lead acid battery.

Fuel: 25 gallons gasoline (Fire 11) in a standard fuel tank (Fire +0).

Occupancy: 1 NCS, 3 NPS.

Cargo: 3,470 cf (open).


Armor F RL B T U

All: 3/8 3/8 3/8 3/8 4/22



Body: Short-range radio; full extinguisher system; 4-man environmental control, improved suspension, improved brakes and run-flat tires.



Size: 16.1'x7.6'x6.4' Payload: 2.14 tons Lwt.: 5.75 tons

Volume: 488 cf. Maint.: 73 hours Price: $74,994


HT: 12. HPs: 546 Body, 31 each Wheel.


gSpeed: 70 gAccel: 4 gDecel: 15 gMR: 1 gSR: 5

Ground Pressure High. 1/4 Off-Road speed.


Design Notes:

Body is 473 cf; wheels are 124 cf. Structure is Medium, Standard. It has improved brakes and improved suspension. Overall armor is cheap metal; underbody armor is Expensive metal. Mechanical controls. Design curb weight is 7,143 lbs; this was increased 1% to the real-world value. Calculated gSpeed was 80 mph. Real-world loaded weight was used for performance calculations. List price for a basic Humvee is $56,400.



The M1165A1 with B3 armor upgrade adds 3,320 lbs. of Expensive Metal armor to all sides of the vehicle (rather than just the underbody), increasing DR by 17 (+ 8 = 25 overall). This increases the vehicle's loaded weigh to 12,100 lbs. and reduces cargo capacity to 2,230 lbs. Curb weight is 9,870 lbs.

Other options include a fording kit (increasing fording depth to 60 inches), an auxiliary 15.5-gallon fuel tank, a 125-psi air compressor, a 12K electric winch, a front brush guard, and a-frame spare tire carrier with 7,000-lb. jack, a running board with handholds, a roof top weapons station, three side door gun mounts, rear pintle-mounted guns, ammo can holders, 7 extra water cans, and a hood mounted tool kit.


From the Aerodrome for GURPS

2008 by Jim Antonicic