Aside from the exterior color, we ordered our new long-term 2021 GMC Yukon AT4 exactly as the one we had tested. GMC packs the AT4 Yukon with loads of standard features, which include the likes of magnetic ride control, hill descent control, skid plates, 20-inch wheels, and all-terrain tires. The interior features a 9-speaker Bose audio system, tri-zone automatic HVAC-system, leather seating surfaces, heated and ventilated front seats, and LED lighting throughout.

Our Yukon AT4 also came fitted with the AT4 Premium Plus Package, which carried an $8,145 price tag (after the $1,000 AT4 Premium Plus Package discount). However, it comes with a load of impressive features. These include, a dual-pane panoramic sunroof, power assist steps, an electronic limited-slip rear differential, adaptive air ride suspension, enhanced cooling radiator, ProGrade trailering tech, head-up display, wireless Apple CarPlay, and a pair of 12.6-inch rear seat entertainment screens. Also on the options list is the $645 Cayenne Red Tintcoat paint, $370 heated second row bucket seats, and $350 power sliding center console.

007 long term 2021 gmc yukon at4 introduction interior

GMC offers the 2021 Yukon AT4 with just one drivetrain option. All Yukon AT4 vehicles are four-wheel drive with the company's 5.3L V-8 engine and 10-speed automatic transmission. The 5.3L V-8 engine produces 355 hp and 383 lb-ft of torque and the door sill sticker indicates that our tester is capable of towing up to 8,200 pounds. The EPA rates the 2021 Yukon AT4 at 16 mpg city, 20 highway, and 18 combined.

So far, we have had the 2021 GMC Yukon AT4 in our fleet for about three weeks and we've logged about 1,000 miles. The Yukon is getting put to work quickly, as we've already towed our 21-foot travel trailer and flat-towed/rescued a 1940's era flat fender Jeep. We've gotten several compliments on the exterior styling from random folks and have only noted a couple small quibbles in our logbooks. But more on those at a later date.

Check back often as we have a full year of exciting testing planned for our long-term 2021 GMC Yukon AT4. We've got long road trips to exciting places planned, a few off-road adventures that should push the limits of the full-size SUV, and of course the requisite daily commuting and school drop-off lines (sorry, there's no soccer practice on the list quite yet, so those jokes will need to wait).

Report: 0 of 4

Previous reports: N/A

Base price: $64,800

Price as tested: $75,605

Long-Term Numbers

Miles to date: N/A

Miles since last report: N/A

Average mpg (this report): N/A

Test best tank (mpg): N/A

B est worst tank (mpg): N/A

Maintenance

This period: N/A

Problem areas: N/A

What's Hot, What's Not

Hot: Magnetic ride control dampers and air-ride suspension

Not: Red tow hooks clash with body color

Logbook Quotes

"We love the wireless Apple CarPlay, but why does it take three steps to get to the interface?"

"This might just be the best-looking Yukon offered, based on all the compliments we've gotten already."

"For a large IRS SUV the Yukon AT4 tows amazingly well."

Options As Tested