Sharing its body with the Dodge Grand Caravan and Plymouth Grand Voyager, the 1990 Town & Country adopted the Chrysler S platform. The Town & Country originally featured the 142 hp 3.0L Mitsubishi 6G72 V6 used across Chrysler's model line. This was upgraded to Chrysler's own 150 hp 3.3 L EGA V6, shared with its Dodge and Plymouth counterparts and the larger Chrysler sedans, as a running change in the summer of 1989. While all first-generation examples were produced as 1990 models, examples with the 3.0 L V6 were certified as 1989 model-year vehicles by the United States Environmental Protection Agency. Both engines were paired solely with a 4-speed "Ultradrive" automatic transmission.