The A-segment is the first category in the passenger car classification system defined by the European Commission. It is used for city cars, the smallest category of passenger cars defined.

The Opel Agila is a city car marketed under the German marque Opel from 2000 to 2014, as a rebadged variant of the Suzuki Wagon R+ and the Suzuki Splash. It has been marketed under the Vauxhall marque