The Cadillac SRX is a luxury SUV manufactured by Cadillac. The SRX was introduced in 2004 and is offered with 4.6 L 320 hp Northstar V8 or 260 hp High-Feature V6 engines. The car is built on the GM Sigma platform, which is shared with the Cadillac CTS and Cadillac STS models. The SRX can be equipped with 5-6-speed automatic transmissions and can be driven with rear or all-wheel drive.