Customized vehicles refer to vehicles specifically designed to appear with an heavily modified appearance or support said modifications. Vehicles listed in this category include any form of custom cars (including hot rod), lowriders, certain gang cars, vehicles tailored for motorsports, and generally any other vehicle which is already available modified.

This categorization is not to be confused with standard vehicles in Grand Theft Auto: San Andreas or Grand Theft Auto V which require visits at Mod Garages to be customized.

Customized public service vehicles also counts as customized vehicles (i.e. Police Stinger and Bickle'76)