The Monster Truck can be said to be a Hill Climber Mk. 2, but with even bigger wheels, good acceleration, and good speed, which tops out at 84.52km/h (52.51mph or 23.47m/s). The Monster Truck is mostly recommended for maps where heavily-uneven terrain is present, but is not great for hill climbing, as it easily flips to the rear. The suspension makes the vehicle quite bouncy, and the size can be a problem for small areas like caves and ceilings (unless the Roll Cage part is installed, but keep in mind that it can broken too after many times hitting, based on how much you have upgraded the part). Monster Truck has an okay fuel tank size.
See Vehicle Paints List for pictures and more information.
The Monster Truck comes with 12 different paints and 6 different wheels that can be obtained (VIP paint and wheel aren't included, but you can get it with VIP subscription). After purchasing, it has free green, blue, and pink paints and a wheel to start with.