All-New 2025 GMC SIERRA: First Look, High-Tech Features, Mileage, Showroom Price, Everything You Need to Know

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Hey folks, if you’re in the market for a truck that can haul your weekend toys or just get you through the daily grind, the 2025 GMC Sierra 1500 is worth a hard look. It’s not a total redesign this year—GMC kept things mostly the same from 2024—but they sprinkled in some tweaks that make it feel fresh without messing with what works. Think bigger wheels and a bit more polish on the outside. It’s still that rugged beast you know, but with enough luxury to make your neighbors jealous.

First Impressions

Pull up to the curb in the Sierra, and it’s clear this truck means business. The front grille is massive, like it’s ready to charge through a snowstorm, and the LED headlights cut through the dark like a pro. Inside, it’s all about comfort—soft leather on higher trims and that MultiPro tailgate that folds out six ways to Sunday for loading gear. I love how the carbon-fiber bed feels tough yet light, stronger than plain steel. It’s got that American muscle vibe, available in cab styles from single to crew, with beds up to 8 feet long. Towing maxes at 13,300 pounds, so yeah, your boat’s coming along just fine.

Power Under the Hood

No skimping on grunt here. You’ve got four engine choices to match your style. The base 2.7-liter turbo four-cylinder kicks out 310 horses and 430 pound-feet of torque—plenty for city runs. Step up to the 5.3-liter V8 for 355 hp, or go big with the 6.2-liter at 420 hp and 460 torque for serious speed (0-60 in about 5.4 seconds on top trims). My pick? The 3.0-liter Duramax diesel—305 hp but a whopping 495 pound-feet, perfect for long hauls without the gas station pit stops. All pair with a smooth 10-speed automatic, and four-wheel drive is there when the roads get dicey.

Tech Smarts

GMC loaded this Sierra with brains. The 13.4-inch touchscreen runs Google built-in, so navigation and apps are right there—no fumbling for your phone. Wireless Apple CarPlay and Android Auto? Check. Safety stuff like automatic braking and lane-keeping is standard, and Super Cruise hands-free driving works even with a trailer (though no lane changes while towing). Higher trims get a head-up display and massaging seats—feels like a rolling lounge. Bose audio pumps the tunes, and those towing cameras make hitching up a breeze, like the trailer’s invisible.

Fuel Sip or Gulp

Nobody wants a truck that drinks premium like it’s water. The Sierra’s efficient for its size—the 2.7 turbo nets 19 combined mpg, while the diesel shines at 26 combined (up to 29 highway). That V8 crowd? Expect 16-18 mpg mixed, depending on if you’re flooring it or cruising. Real-world tests show highway runs hitting 18-20 on the big engines, so plan your stops accordingly. It’s no Prius, but it’ll save you cash over older models.

Price 

Starting at about $39,000 for the base Pro, it climbs to $87,000 for the loaded Denali Ultimate. Crew Cab jumps to $46,000-ish, but you get bang for the buck—think adaptive cruise and keyless entry standard on most. Add four-wheel drive for a few grand more. Compared to a Ram, it’s cheaper on luxury without skimping. Bottom line: This Sierra’s ready to work or play, and at these prices, it’s a smart grab before they vanish off lots.

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