General Motors and its Chinese joint ventures sold a record 1,273,502 vehicles in in the first half of 2011, receiving a boost from all-time record June sales of 193,878 vehicles.

In a statement, GM said first half sales in increased 5.3% year on year, setting an all-time record for first half year sales.

Domestic sales by Shanghai GM were up 25% year on year to a record 600,002 vehicles. But sales of mini-vehicles in by SAIC-GM-Wuling decreased 5.4% onto 641,324 vehicles and FAW-GM’s domestic sales were off 38.8% from the first six months of last year to 30,332 units.

GM’s passenger car brands all set new records for the first half of 2011. Buick sales rose 28.2% to 324,919 vehicles, primarily the result of unprecedented demand for its Excelle [Opel Astra-based] lower-medium passenger car family. With especially strong demand for its Cruze and Sail small cars, Chevrolet sales in rose 14.5% year on year to 297,841 vehicles. Cadillac sales of 14,078 vehicles jumped 88.3% year on year, receiving a strong boost from the popularity of the Sls luxury business sedan and SRX luxury utility vehicle.

June sales by GM and its joint ventures were up 9.9% from last year’s then-record sales for the month of 176,489 units.

Shanghai GM’s domestic sales rose 41.4%, reaching a June record 101,524 vehicles and surpassing the 100,000 mark for the second month this year.

Domestic demand for the Buick, Chevrolet and Cadillac brands hit new June highs. Buick sales rose 48.4% to 54,140 vehicles as sales of its Excelle lineup totaled 22,888 units. Buoyed by the continued strength of the Cruze and Sail and the arrival of the new Aveo small car, Chevrolet sales in increased 34.0% from June 2010 to 51,312 units. With demand for the SRX reaching an all-time monthly record of 1,876 units, Cadillac sold 2,722 vehicles in the sixth month of 2011, an increase of 50.2% year on year.

SAIC-GM-Wuling’s sales in decreased 11.2% to 88,027 units in a down market last month. It remained the leader of the mini-commercial vehicle segment despite the expiration of government incentives for consumer purchases. The joint venture’s newest product – the Wuling Hong Guang, which was developed locally by SAIC-GM-Wuling – achieved sales of 18,327 units.