The Baojun 630 is a four-door sedan and was the first car produced by Baojun. The 630 is manufactured in Liuzhou, Guangxi, China. It was launched at the 2011 Shanghai Auto Show, and went on sale in August 2011. A five-door hatchback derivative called the 610 was added to the range in April 2014.
The car was developed at the SAIC-GM Pan Asia Technical Automotive Center (PATAC) in Shanghai. While not visually similar to other GM cars, it has been suggested that the 630 is based on the Buick Excelle/Daewoo Lacetti platform.
In 2014 the car debuted in Egypt and Algeria as Chevrolet Optra.
The 630 is powered by a 4-cylinder 109 bhp (81 kW; 111 PS) 1.5 L (1485 cc) engine producing 108 lb·ft (146 N·m) and mated to a five-speed transmission. A 1.8 L (1796 cc) version, producing 141 bhp (105 kW; 143 PS) 177 NM was added to the range in November 2012.
The car is 4,597 mm (181.0 in) long, sits on a 2,640 mm (103.9 in) wheelbase and weighs 1,206 kg (2,659 lb).