The Colorado seemed promising when it replaced the S-10 in 2003. Since then, a number of better competitors have come on the scene. Its unrefined five-cylinder engine, which it shares with its GMC Canyon twin, is anemic and doesn't offer a fuel-economy advantage over a V6. Notable shudder plagues the ride, the seats are uncomfortable, and interior quality is lacking. However, handling is sound. The Colorado comes with standard stability control and curtain air bags. The test results for the Colorado also apply to the GMC Canyon.