The GMC Acadia Denali is one of the best luxury SUVs - even though it's technically not one

But GMCs look good wet — the Acadia Denali wore its 'Iridium Metallic' black paint job quite well.

Exterior details are contemporary without being overly flamboyant.

The subdued headlight motif is picked up at the rear.

Our test car came with an all-wheel-drive system. It can handle moderately challenging off-road conditions, but I didn't put it to the test. The Acadia was plenty surefooted, so I think it would do fine in snow, sleet, and slush.

These rectangular tailpipe covers are a nice touch.

And of course there's the famous GMC badge and grille: powerful and trucklike.

The wheel arches are a design sticking point for some. With a somewhat low vehicle like the Acadia, they lose some of their ability to evoke a larger pickup truck ...

... at both the front and rear.

Denali badging, forged in chrome.

The callouts for this semiluxury subbrand appear inside, too. But they're fairly subdued.

Cargo capacity is perfectly reasonable. We transported five people (two adults and three kids) using the three-row seating configuration and had enough room for everyone's gear. We also had room to bring back some extra stuff at the end of our roughly 400-mile round trip.

The second row of seats is roomy, but the third row is pretty snug.

The detailing on the leather interior — in jet black — is quiet. GMC wants to project an impression of seriousness wherever possible.

Front seats are both heated and cooled.

Second-row passengers have their own dual-zone climate controls — and heated seats!

The second row also has this large pull-out tray that can serve as an extra-large cupholder.

But here's the best thing about the second row of seats. In addition to USB ports, you have ...

... a good old-fashioned 120-volt outlet!

Charging is available everywhere in the Acadia — which makes sense, given that the SUV comes with OnStar 4G LTE wireless connectivity, meaning that everyone in the vehicle can tap the Wi-Fi to use a device.

Purposeful leather, brushed metal, and a simple analog-style instrument panel present themselves to the driver.

The steering wheel is heated! This is a must-have feature for me these days on luxury SUVs, so it's terrific to see it here on the Acadia Denali.

You have the usual charging options and USB ports up front, plus a pair of cupholders and plenty of storage for small items.

As you've probably noticed, the trim level for the Acadia Denali has a lot of dark wood inside.

The overall impression is very masculine. And that makes sense, because GMC is aiming this vehicle, in this upscale trim level, at male buyers. I think women will like it, too, however. It's sharp without being fussy.

A 'Dual Skyscape' sunroof makes sure that the rear passengers aren't sitting in a dark cave. (But it's a $1,400 option — one of just a few on the Acadia Denali, which comes with a long list of standard features for its $46,920 price tag.)

Lovely.

Let's talk tech. With GM cars and trucks, that story begins with 4G LTE wireless connectivity, piped through OnStar (which can, by the way, still do all the things that we love about OnStar, including obtain directions at the push of the blue button).

The infotainment system is operated with this 8-inch center touch screen and via controls on the steering wheel, as well as through voice commands. Apple CarPlay and Android Auto are available. Combined with OnStar, 4G LTE, and excellent ease-of-use, I think GM's infotainment systems are currently the best on the market.

Basic knobs and buttons are also on hand. These useful when you're driving with gloves or don't want to be distracted by the touch screen.

There's a standard satellite radio, and the eight-speaker Bose audio system (also standard at this trim level) can handle a wide range of music, from rock to jazz and classical to pop.

Bluetooth connectivity is seamless, and media is easy to access using a wired or wireless connection. The touch screen also enables control of various vehicle functions ...

... such as heating and AC.

Camera views are extensive and can be assisted with the 'Surround Vision' bird's-eye view composite image. There are cameras in the front and rear — four total.

Guides and sensors/proximity warnings assist the driver in parking and, given that this is a GMC, towing maneuvers. The Acadia Denali can manage 4,000 pounds.

The Acadia Denali gets a 3.6-liter V-6 engine, making 310 horsepower. MPGs are 18 city, 25 highway, 20 combined, which isn't stunning, but you can haul around seven humans with this thing and tow a small boat. I observed what I thought was better fuel economy than rated on my journey with the vehicle, but I was also taking advantage of a cylinder-deactivation feature on the highway. The transmission is a capable six-speed automatic, and this knob-and-button cluster allows you to activate parking alerts and lane-departure warnings, as well as toggle among drive modes: two-wheel drive, all-wheel drive, sport, off-road, and towing.

I didn't find sport mode to be all that thrilling, but it's nice to have.

The instrument panel is refreshingly straightforward, with a basic three-gauge design. It can, however, provide ...

... useful vehicle info, such as oil life ...

.. and tire pressure, along with lots of other data.

So what's the Acadia Denali like to drive?

It's just incredibly solid in every way. The vehicle is packed with unpretentious premium materials and high-end technology, and it has all the versatility a family of five could want without graduating to a full-size SUV.

On a highway cruise from New Jersey the east end of Long Island and back, everyone traveled in mellow comfort, enjoying the quality audio system and the extensive OnStar 4G LTE connectivity. A bunch of advanced cruise-control features — ranging from a forward-distance indicator to low-speed forward braking, a following-distance indicator to lane-keep assist — made for a low-key jaunt. (In cities, there's a helpful front pedestrian-detection system.)

If I had one complaint, it was that the Acadia Denali's ride, no matter which mode it was in, was a tad stiff. Stiffer, to be sure, than the Cadillac XT5, with which it shares a platform. The GMC's engine, however, felt more robust than the Caddy's, even thought they're effectively the same. This could be because of the XT5's eight-speed transmission versus the six-speed on the GMC.

Overall handling was very good. This is an SUV that you can hop into and feel comfortable with right away. The learning curve is minimal. We're not talking about a sports car, but the Acadia Denail comes off as rather nimble for a crossover than can accommodate so many people. (The 2017 Acadia is actually 700 pounds lighter than the previous generation of the vehicle, which was also bigger.)

The weird thing about the Acadia Denali is that its fully optioned pricing is right up there with Audi, BMW, Mercedes, Lexus, and others, but its brand reputation isn't based on luxury. Instead, it's based on the true utility of a truck, even if it's a crossover SUV. So the Acadia Denali comes off a more serious ride than, say, a Lexus RX 350.

The midsize crossover is an incredibly competitive segment — one of the most important for automakers doing business in the US and increasingly in China. But the Acadia Denali doesn't approach with a lack of confidence. It's almost as if this SUV has nothing to prove, but goes ahead and proves it anyway. This is stealth luxury.

It's impressive, and it's why the Acadia Denail is my new favorite luxury SUV that isn't actually a luxury SUV.