A professional monster truck typically produces about 1,500 horsepower.
That figure comes from the large, supercharged V8 engines used in major touring competitions such as Monster Jam. These engines commonly burn methanol rather than ordinary pump gasoline, helping them deliver enormous power and withstand demanding jumps, landings, and rapid acceleration.
Horsepower is only part of the story. A competition truck also uses a heavy-duty automatic transmission, enormous tires, four-wheel steering, and long-travel suspension. Together, those systems let the truck convert engine power into controlled movement over ramps and crushed cars.
Some independently built or specially tuned trucks may produce somewhat more or less power, so 1,500 is a typical benchmark rather than a universal specification. The number is also easy to confuse with a road pickup's output: a normal pickup generally makes only a few hundred horsepower. Monster trucks need far more because they are much heavier and must launch, climb, and recover from spectacular obstacles.