Bearing the internal code T250 and sold in South Korea as the 'Daewoo Gentra', revisions included exterior styling changes, a new interior instrument panel and minor equipment changes, including increased sound deadening.

GM introduced a facelifted sedan at the 2005 Auto Shanghai, designed in cooperation with PATAC.

Interiors feature a circular motif throughout. Five-doors also feature a side window in the C/D pillar with a distinctively angled lower edge. The T200 sedan and five-door hatchback featured a swage line running along the lower body to the rear door, which kinks downward prominently on the five-door. In South Korea, where the detached lights were used at first, the integrated design was later utilized as a facelift. In Australia, when the Daewoo Kalos was introduced in 2003, the hatchback featured the integrated lighting arrangement, with the detached style used to differentiate the sedans. When sales in Europe began in 2003, the headlights were an integrated unit that slanted upwards from the 'V-shaped' grille towards the front fenders. This detached style, used primarily in South Korea and North America, was used in conjunction with a semi-elliptical grille. When released in 2002, the T200 headlamps were detached from the horizontal amber turn signal strip, located directly below. Two different T200 front-end styling designs were sold. The Kalos was sold in three and four available body styles: a 4-door sedan and 5-door hatchback from the beginning of production in 2002, and a 3-door hatchback available in certain European markets beginning in 2005. During this three-year development period Daewoo was struggling financially, with the ultimate fate of the company and the concept vehicle remaining uncertain. Originally designed by Italdesign, the Kalos derives directly from the 'Kalos Dream' concept vehicle first presented at the 2000 Paris Motor Show and subsequent developmental concepts at the 2001 Frankfurt Motor Show, 2002 Geneva Auto Show, and 2003 at the Geneva Show.

Coolant in chevy sonic engine