The Second-Gen GMC Acadia Is Held Together With Glue In Order To Save Weight

GM’s new Acadia is an improvement over the outgoing model (which is still on sale), offering an up-to-date engine line-up, improved tech, and less weight.

The second-gen Acadia, revealed at the North American International Auto Show last January weighs 700 pounds (317 kg) less than the model it replaces. That’s partly due to its reduced size compared to the old variant (being shorter by 7.2 inches in length, 3.5 inches in width and 3.9 inches in height) and partly due to GM’s manufacturing process.

The new Acadia uses lightweight steel in its construction, but unlike most cars, many of the parts of the Acadia’s underbody are held together thanks to an advanced adhesives similar to those used in modern airplanes, according to the New York Times.

This “superglue” bonds the parts not just in certain spots but all along the seam where they connect, improving rigidity. That’s how was GM able to switch to thinner steel, in some cases, helping the Acadia shed almost the equivalent of a 1956 BMW Isetta.

Ultimately, “it’s all the little things that add up to the big number,” as Charlie Klein, executive director of GM’s global carbon-emissions reduction strategy, said.

As a result, fuel economy has improved, with the 2.5-liter four-cylinder returning 22 miles per gallon in the city (13 lt/100km) and 28 mpg on the highway (10 lt/100km). The car was thought and constructed to be part of GM’s 54.5MPG by 2025 average – a standard that EPA and NTHSA have put in place in order to reduce greenhouse gasses and improve fuel economy.


  • Keven44977

    I really hope it work better than it sound…

  • Craig

    Just keep it out of the sun.

  • pcurve

    surely it has to be also smaller inside. that’s a huge dimensional shrinkage

    • Six Thousand Times

      It is smaller inside, too.

    • T_Cake

      That’s what she said.

  • Six_Tymes

    interesting technology, i do remember reading about this “super glue” used in airplanes years ago. this new acadia does look much better than the previous.

  • TheBelltower

    I wonder how much weight was saved using this method. Adhesive is dense, usually fairly heavy, and it’s used everywhere. I have a feeling this has more to do with production efficiency and crashworthiness than actual weight savings. The new athletic size and small engine probably have more to do with the weight savings.

  • SteersUright

    Still has an ugly interior, crap engines, and is way overpriced.

    • BGM

      Beauty is in the eye of the beholder, I think it’s a pleasant enough design. However, a 4 cyl engine?

      • Ken Lyns

        The link to the earlier January article says an optional 310-hp 3.6 L V6 will be available. It will probably be the corporate LFX engine currently used in everything from the Camaro to the Colorado.

      • T_Cake

        They’ve got a turbo 4 powering the new Volvo XC90, and it seems to be working out. I think it’s just hard to wrap our heads around the idea of an engine half the size it would have been ten years ago moving a big SUV.

  • BqWsRe

    Same technology that stealth fighter jets use. Very sophisticated.

    GM is really pushing the mixed materials strategy to save weight but keep performance and comfort.

  • J Hod

    700 pounds? thats really good actually well done GM

  • Vyurr

    Shame they didn’t put some of that weight back into reinforcing areas the acadia is notoriously bad in, like that rack and pinon setup that eats itself after about 5 years

    • dumblikeyou2

      I don’t keep my cars more than three years so I’m not worried. I don’t buy used cars so I’m not worried.

  • Kagiso Mutlaneng

    LMFAO wait 10l/100kms is improved fuel consumption on a 2.5L? LOL

    3L V6’s are sometimes claimed at 8-9L/100kms…

    Looks good though and the shedding of the weight is commendable. BMW need to have a look at this vs that Carbon Core nonsense!

  • no25

    I saw one in person the other day – not too bad but it definitely looks way too small compared to the previous Acadia (I know that it was purposely shrunk but really, that much?)

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