The 2015 GMC Terrain is an exciting contender in the mid-size crossover segment. It uses the same platform as the Chevrolet Equinox and shares a general aesthetic with both the Acadia and the latest Chevrolet Malibu. The Terrain's rocker panels are integrated into the doors, narrowing the area over which a passenger must step. The body is stiffened with single-piece side stampings plus high-strength steel in critical areas. The Terrain benefits from two efficient engines, each making use of variable valve timing and direct injection. A standard 2.4L 4-cylinder engine makes an impressive 182 horsepower yet delivers 32 mpg on the highway. A 3.6L V6 is optional on all trims. It makes 301 horsepower and returns a combined EPA-estimated 20 mpg. A 6-speed automatic transmission is the only transmission available. Front wheel-drive is the standard drivetrain, but all-wheel drive is available. Storage areas are everywhere in the cabin, including an oversized glovebox, a closed storage bin in the instrument panel above the center stack and a closed storage bin under the center armrest large enough for a laptop computer. The rear seats feature MultiFlex, which allows the seats to move back and forth a total of eight inches for the best rear legroom in the segment. Standard equipment on base SLE trims includes Bluetooth, a rearview camera, 17-inch painted aluminum wheels, StabiliTrak stability control, traction control, 4-wheel anti-lock brakes, six air bags, an anti-theft system, an XM Satellite Radio-ready audio system, iPod and MP3 capability and six months of OnStar service. Power windows, door locks, remote keyless entry, a tilt and telescoping steering wheel, as well as power mirrors and automatic headlamps round out the generous standards list. Optional equipment on the SLE trim includes satellite radio, remote start, heated front seats, navigation, a sunroof and 19-inch wheels. The uplevel SLT trim includes luggage rails, a Pioneer 8-speaker stereo, heated power seats, a leather-wrapped steering wheel and remote start standard. Options on the SLT include a rear entertainment system, navigation system, a power sunroof and 18- or 19-inch chrome wheels. The Terrain Denali is immediately recognizable by its unique wheels, chrome grill, satin chrome accents and unique headlight and tail light design. Inside, the Denali comes with black leather seating surfaces with contrasting stitching, a soft touch instrument panel with French stitching, smoked mahogany wood trim, 8-way power adjustable front seats and a sunroof. The Denali also includes a lane departure warning system, a cross traffic detection system and a power liftgate as standard features. Options on the Denali include a rear seat entertainment system and a navigation system.