Colorado Chevrolet 2012 Dark Gray Metallic 4-Speed Automatic with Overdrive 3.7L 5-Cylinder SFI DOHC 4WD LT 4WD. Recent Arrival! Reviews: * If your pickupâs capabilities are more important to you than its fancy styling or cushy interior, the 2012 Chevrolet Colorado is a truck that should be in your driveway. Those worried about the cost associated with driving a pickup will appreciate the base modelâs impressive fuel economy and surprisingly strong 4-cylinder engine. Source: KBB.com * Affordable; strong V8 performance; wide variety of configurations. Source: Edmunds