It shares the same engine sound as the Squaddie. The vehicle is powered by a single-cam V8 engine, coupled to a 4-speed gearbox in a front-engine, all-wheel-drive layout (40–60, front to rear torque distribution). The snorkel on the hood provides good tolerance in deep water, though not as much as the Squaddie.
While it remains weak to push other vehicles, it has a tendency to drive over them when the stock bumper is retained, also being ideal for off-roading like the Squaddie. It also has rather sluggish handling due to its relatively heavy mass, but can withstand several collisions without noticeable deformation. The vehicle performs quite similarly to the Patriot, having a lower top speed and acceleration than the Squaddie. Performance Grand Theft Auto Online Vehicle The spare wheel's rim from the "Roll Cage w/ Spare Wheel" modification also receives the wheel color from the corresponding option. The portion around the center can also support a dedicated wheel color, appearing to give a tint/shade on it (though only naturally-generated examples may have one).
It uses a unique set of rims, consisting of eight circular holes and a protruding center with bolt details. The primary color of the vehicle is applied to the bodywork, the engine cam covers and most of the interior, while the secondary color is applied to the roof.
Between the central section and the driver side, there is a narrower section that contains a small radio display (difficult to see in first-person), additional switches and the corresponding gear stick. There are numerous aircon units across the dashboard, while the central area is occupied by a bulky section with switches, aircons and a display in the center. The interior of the vehicle is unique, being an ample interior with a mostly gray leather finish and a dial set derived from the Squaddie, arranged in a way that the main dials are on the right of the driver side and the smaller gauges located above the steering wheel. The tail lights are the same ones from the Squaddie and the Winky, but the inner brake lights are not split in half.
The rear end of the truck is mostly identical to the Squaddie, featuring a large tailgate in the center that bears a black plate, as well as a bumper that is similar to the "Black Heavy Plated Bumper" option for the Squaddie (though adding a license plate on the driver side). The rear section of the vehicle is occupied by a small bed with flat durbar portions on the sides and amber lights on the rearmost sides, along with a small exhaust pipe on the rearmost left side and the fuel cap on the rear right fender. The cabin assumes a similar shape to the Squaddie but is a bit shorter in height and has rounded edges on the sides, while being larger to accommodate four occupants. There are also black rectangular mirrors mounted on the doors, which resemble the "Black Modern Mirrors" option from the Squaddie (while the stock mirrors of the aforementioned vehicle can be found under the same name on this vehicle). The bottom of the vehicle has black borders with a set of side steps that resemble the "Rhino Side Steps" options from the Squaddie, while the doors have central plates, dual hinges and large handles finished in black (which can be replaced with armored doors resembling the "Heavy Armored Doors" options from the Squaddie).
The sides of the truck have a mostly unique design, lacking the flared profile seen on the Squaddie and its beta model, as well as the Patriot and its derivatives, in conjunction with a long antenna on the driver-side front fender. Similar to the Squaddie, this front section hinges from the front and opens to reveal the engine bay, revealing a small air filter and the intercooler that is almost in a horizontal position and is placed in front of the engine.
The hood retains most of the features from the aforementioned vehicle, though lacking the details near the windshield and having a shorter, block-shaped air intake snorkel on the right. Its front end and grille are mostly identical to the Squaddie (albeit with a flat lower edge), while the "Mammoth" badge can be seen just above the grille. The vehicle assumes a very similar design to the Squaddie and shares most of the options from the aforementioned vehicle, featuring a bumper that is similar to the "Black Low Profile w/ Winch" bumper option, as well as a wide guard that spans the whole width of the truck and which derives from the aforementioned vehicle. As a variant of the Squaddie, the Patriot Mil-Spec is primarily based on the Hummer H1, and bears a strong resemblance to the Mil-Spec Automotive's customized H1 series, evidenced by its side-view mirrors, the bolt-on black panels on its side doors and tailgate, as well as the unique interior design.