A compact sport utility vehicle, also known as compact SUV, is a class of small sport utility vehicles that is larger than mini SUVs, but smaller than mid-size SUVs. However, there is no official definition of the size or dimensions for this market segment. Moreover, some manufacturers have marketed the same model name on different sized vehicles over time. The most common distinction between versions of crossover automobiles and compact sized Sport Utility Vehicles and is that the first is based on a car's platform, while an SUV uses the chassis of a truck. However, manufacturers and common usage has blurred the two terms.