What car company came out with the RX-8 in 2004?

The car company that came out with the RX-8 in 2004 was Mazda. The RX-8 was a Japanese sports car powered by Mazda's distinctive RENESIS rotary engine, continuing the company's long association with Wankel-engine technology.

Mazda first showed the RX-8 as a concept at the 2001 North American International Auto Show. Production began in 2003, while the car was sold as a 2004 model year vehicle in the United States and several other markets. That model-year distinction explains why references may mention either 2003 or 2004.

The RX-8 used a front-mid-engine, rear-wheel-drive layout and unusual rear-hinged rear doors, giving it four usable seats while retaining a sporty coupe profile. Its naturally aspirated 1.3-liter rotary engine used triangular rotors instead of conventional pistons, allowing a compact engine design and high-revving character.

The RX-8 succeeded the Mazda RX-7 and remained in production until 2012. Mazda built roughly 192,000 examples. It was discontinued partly because declining sales and increasingly strict emissions standards made continued production difficult.