Sentinel
The Sentinel, a luxury four-door car has first made its appearance in Grand Theft Auto III as a Mafia car, and has been featured on GTA Vice City, GTA San Andreas, GTA Advance, GTA Liberty City Stories, GTA Vice City Stories. It is commonly found throughout the business districts of all the cities, however some can be seen driving in the general suburbs, and sometimes in the wealthy parts of town. Its handling is also pretty good, however it suffers from understeer. The Sentinal in GTA San Andreas resembles a 1986 Buick Century. The ones in Grand Theft Auto III and Vice City resemble 90's Buick Centuries (ahead of Vice City's time).
Variants
There have been several versions of the Sentinel throughout the games.
The Mafia Sentinel in GTA III or Leone Sentinel in GTA LCS is a gang version of the Sentinel used by the Leones. The car is based on the relevant rendition of the Sentinel, but assumes a dark grey color in GTA III, or black in GTA LCS, with lower bumpers and side skirts, as well as the additional rear spoiler and grill at the back windscreen. Like a fine Italian sports car, it accelerates fast and handles well, and thus is ideal for street racing.
The Sentinel XS is a variation of the Sentinel in GTA Vice City, with improved top speed and acceleration, modified hood, a rear spoiler and rear windscreen grills. It is also audibly distinguishable from its non-turbo progenitor: the XS features the deep growl of a turbine. It is almost identical to the Mafia Sentinel, except with the model changing (that goes with the newer game and earlier era) and that XS comes in more than one body color, as opposed to one for the Mafia Sentinel.