The 2011 Piaggio MP3 variants have differing amounts of power due to the different engines. The 250 has 22.5 horsepower at the ready and is able to hit a top speed of 77 mph, which is fairly decent for a scooter, but is the low end for the MP3 line. The 400 puts out 34 horsepower and can make it up to 88 mph, while the 500 gets up to 40 horsepower but only hits 89 mph. All of these come courtesy of a sturdy four-stroke, water-cooled engine. Power is useless unless it can be put to the ground, and the Piaggio MP3 does this through a steady continuously variable transmission that links down to the unique tricycle layout. As a so-called tadpole trike, meaning the two wheels are in the front, the power goes to the single rear wheel. The front does the turning, and the unique parallelogram suspension that is composed of four aluminum arms connected to two steering tubes allows for travel of 85 millimeters, allowing for a very deep lean of the front end while keeping the dual 12-inch wheels in contact with the road. These front wheels can also be locked in the straight position so that the MP3 can be parked like a car or on a hill, without a center stand.