The B-segment is the second smallest of the European segments for passenger cars, which is described as "small cars". It is equivalent to the subcompact category in the United States and the supermini category in Great Britain (however the Euro NCAP vehicle class called Supermini also includes the smaller A-segment cars).
The term B-Segment is also used in India, however the definition of the segment differs from that used in Europe.
The five highest selling B-segment cars in Europe are the Renault Clio, Volkswagen Polo, Ford Fiesta, Peugeot 208 and Opel Corsa.
exact market definition was left open .. boundaries between segments are blurred by factors other than the size or length of cars