Truong Hai Group Corporation (THACO), is a Vietnamese automobile manufacturer in. The company is a member of the Vietnam Automobile Manufacturers Association (VAMA). It was founded in 1997 and is considered one of the pioneers of the Vietnamese auto industry. In 2014, the company captured 32% of Vietnam's automobile market. As of 2017, THACO owned the largest automobile production capacity in Vietnam, at 71,000 units per year.

The Mazda3 is a compact car manufactured by Mazda. It was first introduced in 2003 as a 2004 model, replacing the Familia/323/Protegé in the C-segment.