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2018 GMC Acadia with 'Christmas Aero' modification gets in the wind tunnel

Tis the season of "Big" - big cheer, big parties, big bowls of eggnog, big decorations, and when it comes to your family hauler, big drag. Festive drivers who festoon their crossovers, minivans, and SUVs with wreaths, Rudolph noses, fuzzy antlers, and rooftop Christmas trees undo the years of work that car engineers devote to fractional gains in fuel economy. To put numbers to such fuel-guzzling madness, GMC started with a 2018 Acadia, optioned it with the Xmas Aero Package - both Standard and Plus versions - put it in Lockheed-Martin's wind tunnel. The resulting dip in fuel economy results probably won't surprise anyone who's used a roof rack - or, for that matter, their car's air conditioning. However, it might surprise you to find out which seemingly substantial decoration had no effect, and which seemingly innocuous decoration was about twice as bad as running the A/C on its Mr. Freeze setting. Check out the brief video above for the results. And consider placement of that bow carefully.

2016 GMC Terrain Denali Quick Spin

Here's a bewildering statistic – General Motors sold over 347,000 GMC Terrain and Chevrolet Equinox crossovers in 2014, making the Theta platform twins the best selling vehicles in their segment. GM sold more Equinox/Terrain crossovers than Honda did CR-Vs, Ford did Escapes, and Toyota did RAV4s. After a week behind the wheel of the 2016 Terrain Denali, we can't fathom why GMC's entry, which accounts for nearly a full third of GM's annual small CUV sales, has been so popular. An inefficient engine, cheap interior plastics, uncomfortable seats, a shortage of technology, and a high price left us questioning why anyone would order this Denali over a Titanium-trim Ford Escape, a Jeep Cherokee Limited, or a Hyundai Santa Fe Sport with the Unlimited Package. Driving Notes While looks are subjective, we'd posit that GMC didn't go far enough with its 2016 mid-cycle refresh. New accents on the front bumper, a tweaked grille surround, and LED running lights round out the changes up front, while the rear gets a slightly different bumper. GMC claims there's a new hood, although we challenge you to pick out the differences – here are the official galleries for the 2013 and 2016, if you'd like to try. GMC missed a tremendous opportunity here. New headlights, some restyled taillights, and tweaked mirrors would have given the impression of a more significant refresh. As it stands, these changes don't add up to much. GMC also claims it made changes in the cabin, adding a "revised instrument panel center stack." Aside from the missing CD slot, which has been replaced with an oddly shaped and not terribly useful shelf, it's hard to spot much of a difference. The Terrain Denali's cabin materials feel cheap. You'll be spending at least $35,000 to park one of these in your driveway, but aside from the leather-and-faux-wood steering wheel, no material feels worthy of that price tag inside. The lower dash plastics are hard and scratchy, the center stack feels hollow and creaks when pressed on, and the too-small shade over the seven-inch display feels flimsy. The upper dash is covered in a cheap-feeling, leather-like material that looks unchanged from when the Terrain Denali debuted back in model year 2013. These materials don't make sense in a vehicle that, as tested, exceeded $41,000. The most egregious thing about the refreshed Terrain is the lack of content.

2023 GMC Canyon debuts August 11

Chevrolet started GM's new-generation midsize truck party with the 2023 Colorado, now GMC's about to hit the stage with the 2023 Canyon. On August 11 at 11 a.m. Eastern time, we'll see what the new generation has done for the Colorado's upscale sibling. GMC teased us with a low angle of the coming Canyon in AT4X trim April. That revealed brawnier bits like big Goodyear Wrangler tires wrapped around 17-inch beadlock-capable wheels, plastic wheel arch flares, and rock rails. The initial version of that trim will be called the AT4X with Edition 1 Package, the front view showing split headlights, a new grille, thin LEDs, and a brush bar like the unit sprouting from nose of the Colorado ZR2 Desert Boss. We're also told there will be a "higher and wider stance, which is factory lifted." The current AT4 trim gets raised one inch, and we have a feeling the AT4X will get around three inches on its tippy toes just like the Colorado ZR2. The rationalization of body styles into a single Crew Cab Short Box will make ease configurations and production. Sadly, the 2.8-liter Duramax four-cylinder diesel is all but certain to be a goner here as well. The 2.7-liter four-cylinder gas engine should slip in here as the sole engine choice in two or three outputs. There's no telling which trims will get which outputs standard, but the choices are a base tune with 237 horsepower and 259 pound-feet of torque, a middle turbocharged tune with 310 hp and 390 lb-ft, and a high-output turboed topper with 310 hp and 430 lb-ft.   The 2023 GMC Canyon AT4X with Edition 1 Package will be available to order on the same day the lineup is revealed, at which time we expect to find out what's included in the Edition 1 versions compared to the AT4X variant that will join the lineup for series production. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.