2021 GMC Yukon AT4 SUV

MSRP $66,095

Ranked #14 in Fullsize Suv

2021 GMC Yukon AT4 SUV Price, Review, Ratings and Pictures

Updated on: October 19, 2021

Nathan Dyer's image
Nathan Dyer 

Senior Editor

The 2021 GMC Yukon is a big brute of an SUV which has slowly made its way up in the luxury SUV segment competing with some top brands like Ford, Nissan, and Chevrolet. The Yukon AT4 is the more rugged, outdoor-oriented version of the Yukon which aims to dominate the segment with a bang as it offers a long list of features, paired with a four-wheel drivetrain.

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Humongous size

Off-road inspired elements

Independent rear suspension for better comfort

Longer wheelbase


Too many options

Hard to maneuver in cities

What's New?

All-new independent suspension setup 

Standard magnetic ride control dampers 

Updated electronics inside


vehicle bio

base price



4dr SUV

passenger capacity



four wheel drive

engine type


325 cu.in.


355 hp @ 5600 rpm


383 lb.-ft.. @ 4100 rpm


6 speed shiftable automatic


suspension front

Independent front short and long arm suspension w/anti-roll bar

brake rotors (f/r)

17/17 in.


passenger volume

8 cu ft.

cargo volume

122.9 cu ft.

towing capacity

7700 lbs.


zero to 60 mph

7.1 sec.


basic warranty

3 yr./ 36000 mi.

drivetrain warranty

5 yr./ 60000 mi.

corrosion warranty

6 yr./ 100000 mi.

roadside assistance


Pictures & Videos


Base$66,095 onwards

Colors and Styles

2021 GMC Yukon AT4 SUV in Crimson Red Tintcoat color
Crimson Red Tintcoat

Vehicle images are guides only and may not reflect the model's exact specifications/features– exact specifications/features should be confirmed with the seller.

Expert Review, Pricing Analysis and Buying Guide

The 2021 GMC Yukon competes directly with the 2021 Ford Expedition Limited, Nissan Armada Platinum, and the Chevrolet Tahoe Premier, all available with four-wheel drive.

2021 GMC Yukon AT4 SUV Features

The 2021 GMC Yukon AT4 has a long list of standard features because the AT4 trim is almost the range-topping trim in the lineup, after the Denali. To start with, it has tri-zone climate control, heated front and rear seats, a 9-speaker Bose surround sound system, front and rear parking assist system, etc. Yes, even the steering wheel has a heating feature.

The AT4 is a Yukon that is a bit biased towards off-roading. It gets equipped with 20-inch off-roading tires and features like hill descent control which could come in handy in tricky situations. It also features recovery hooks which add a nice touch to its off-road getup.





Key Features

ABS and traction control


Front dual-zone automatic air conditioning and separate rear controls


Sirius XM AM/FM Satellite radio, USB, and AUX connectivity


Dual front row LCD screens


Remote keyless entry


Rain sensing wipers


Driver and passenger lumbar support


Front and rear parking assist


Heated front and rear seats with heated leather-wrapped steering wheel


Leather seats


20-inch aluminum wheels


Heated mirrors


Wireless Apple CarPlay and Android Auto 


9 speaker Bose audio system

What do we recommend?

The 2021 GMC Yukon AT4 comes with an optional Premium Plus package which makes the list of on-cabin electronics even longer but comes with a $9,145 price tag. There is even an option of having an adaptive air ride suspension. In conclusion, the AT4 comes with a long list of add-ons but the standard AT4 should fulfill almost all the needs of a person looking to buy a humongous off-roader.

2021 GMC Yukon AT4 SUV Engine and Performance

The 2021 GMC Yukon AT4 comes with a 5.3L V8 which pushes out 355 horsepower at 5600 RPM. The horsepower output is enough for a vehicle of its size. The engine produces 383 pound-feet of torque at 4100 RPM which is a respectable number.

The star here is the four-wheel-drive system which comes with an electronic slip differential and a four-wheel independent suspension setup that pushes the capabilities of the AT4 through the roof. The 10-speed automatic works like a charm and is smooth while shifting even in bad conditions.


2021 GMC Yukon AT4

2021 Nissan Armada 4x4 Platinum

2021 Ford Expedition Limited 4x4

2021 Chevrolet Tahoe 4x4 Premier







5.3L V8

5.6L V8

3.5L Twin Turbo V6

5.3L V8







10 speed automatic

7 speed automatic

10 speed automatic

10 speed automatic


355 hp @ 5600 RPM

400 hp @ 5800 RPM

375 hp @ 5000 RPM

355 hp @ 5600 RPM


383 lb-ft @ 4100 RPM

413 lb-ft @ 4000 RPM

470 lb-ft @ 3500 RPM

383 lb-ft @ 4100 RPM

0-60 MPH (seconds)





Quarter Mile (seconds)





Top Speed (MPH)





The AT4 is not the fastest in comparison with the competition, nor is it the most powerful, which is okay considering it is an off-road-oriented vehicle with off-road tires and hence it lags behind in terms of straight-line speeds. At its $61,584 price point, the competitive SUVs from Nissan, Chevrolet, and Ford may provide more performance on the road and be a second quicker in the 60mph run, but the AT4 makes up for it off the road.

How does the 2021 GMC Yukon AT4 handle?

The 2021 Yukon AT4 handles well even at higher speeds. Around corners, there is some visible body roll but nothing too excessive. The real face of the AT4 is revealed when taking it off-road as it devours potholes and inconsistencies on the road thanks to its adaptive suspension setup which changes its nature depending on different road conditions.

The Yukon might face issues in areas that are more congested with traffic or smaller streets in the city. As for the rest, it handles exceptionally well for a vehicle of its stature.

How well does the 2021 GMC Yukon AT4 brake?

The AT4 comes with 15-inch brake rotors at the front and 10.8 inches at the rear which seem perfectly sized as it also has a pretty hefty curb weight of 5743 lbs. The brakes offer enough stopping force to stop the AT4 on its tracks in 137 feet which is a respectable number.

The AT4 also comes with features like ABS, hill descent control which make sure that just the right amount of braking force is applied when descending and inspires confidence in the drive while braking.


2021 GMC Yukon AT4

2021 Nissan Armada 4x4 Platinum

2021 Ford Expedition Limited 4x4

2021 Chevrolet Tahoe 4x4 Premier

Brake Rotors Front (Inches)





Brake Rotors Rear (Inches)





Curb Weight (lbs)





60-0 (feet)





When compared to the competition, the AT4 has the biggest sized brake rotors same as the Tahoe but still lacks stopping distance when compared to the Armada or the Expedition. The Armada even weighs more but manages to stop in just 128 feet, while the Ford vaunts of the best braking capabilities coming to a halt at 121 feet when decelerating from the 60mph mark. 

2021 GMC Yukon AT4 SUV Fuel Economy

The 2021 GMC Yukon AT4 has a mileage of 16 miles per gallon in the city, 20 miles per gallon on the highway and 18 miles per gallon combined fuel efficiency. These numbers are not the most impressive but are quite good for a V8 engine of its capacity. The AT4 also has a decent fuel capacity of 26 gallons which when combined with its fuel economy numbers result in good overall fuel efficiency, again, especially for a V8.


2021 GMC Yukon AT4

2021 Nissan Armada 4x4 Platinum

2021 Ford Expedition Limited 4x4

2021 Chevrolet Tahoe 4x4 Premier

MPG (city)





MPG (highway)





MPG (combined)





Fuel Capacity (gallons)





Range (city/highway/combined)





The only SUV which easily beat the AT4 is the Expedition with better fuel economy figures hence resulting in a better range. The AT4 still is quite decent with a range of 416 miles in the city, 520 miles on the highway, and 468 miles combined which is way higher than the Chevrolet Tahoe that shares the same platform. The Tahoe’s economy numbers are similar to the GMC but the smaller tank affects the range.

2021 GMC Yukon AT4 SUV Interior

The 2021 Yukon AT4 comes with a newly refreshed interior. The front and the second-row seats come with a heating function and even the steering wheel is included in the heating system. All seats have electronically powered adjustability, and the steering wheel comes with tilt/telescope adjustability. The longer wheelbase of the Yukon means more legroom for all occupants. The second row comes with captain seats and separate air-con functions which makes it a comfortable place to be in.

The third-row seats now have significantly more space thanks to the new independent suspension setup. The interior also is riddled with cubby holes and storage spaces which expands the horizons for almost never-ending storage spaces. The storage situation only gets better with a trunk space capacity of 25.5 cubic feet behind the third row which is great for a decent amount of luggage.


2021 GMC Yukon AT4

2021 Nissan Armada 4x4 Platinum

2021 Ford Expedition Limited 4x4

2021 Chevrolet Tahoe 4x4 Premier

Seating Capacity





Front Row (Headroom/Shoulder Room/Leg Room, in inches)





Rear Row (Headroom/Shoulder Room/Leg Room, in inches)





Third Row (Headroom/Shoulder Room/Leg Room, in inches)





Trunk Capacity (cubic feet)





The Yukon AT4 has some of the biggest numbers in terms of interior space thanks to its gigantic size. It also has enough space to comfortably seat people even in the third row. Some of the key features of the 2021 GMC Yukon AT4 are:

  • Heated front and rear seats
  • Excellent seating space
  • Power adjustable seats
  • Tri-zone climate control
  • Larger trunk capacity

How are the infotainment features on the 2021 GMC Yukon AT4?

The infotainment features of the 2021 GMC Yukon AT4 are a long list, fulfilling almost all the needs expected from the trim. Starting off with connectivity features, the AT4 comes with Bluetooth, USB, AUX, Apple CarPlay, Android Auto, and Sirius XM AM/Fm Satellite radio. To accommodate the connectivity features, the AT4 also has a 9 speaker Bose speaker system that channels music through speakers placed all around the cabin. 

There is also a navigation system that is voice-activated which means voice recognition and command systems are also included. All this comes on a 10.2-inch color touch screen which is intuitive and nice to use. Steering wheel controls add functionality and ease of use for the infotainment system.

Some of the highlights of the infotainment system on the N Line are –

  • Bluetooth, AUX, USB
  • Apple CarPlay Android Auto
  • 9 speaker Bose audio system
  • Sirius XM Satellite AM/FM radio
  • 10.2-inch touchscreen
  • Steering mounted controls

2021 GMC Yukon AT4 SUV Exterior

The 2021 GMC Yukon AT4’s exterior clearly looks on par with the competition. It is big and bulky, just what it wishes to be, a full-sized American SUV and it manages to show that quite evidently. The giant chrome-laden grille at the front has GMC written in bold red characters shows that it is no joke. The solid silver bash guard and the red pulling hooks also showcase its intentions. The 20 inches off-road tires also add to a touch of its off-road nature thus enhancing the overall look of the SUV.

The AT4 has a longer wheelbase now which makes it more comfortable on the beaten path. It also makes it longer. The Yukon is also quite tall with a height of 76.5 inches, getting inside could be a hassle for most people.


2021 GMC Yukon AT4

2021 Nissan Armada 4x4 Platinum

2021 Ford Expedition Limited 4x4

2021 Chevrolet Tahoe 4x4 Premier

Curb Weight (lb.)





Length (inches)





Width (inches)





Height (inches)





Ground Clearance (inches)





Wheelbase (inches)





The AT4 has a decent ground clearance of 8 inches which is adequate for rough conditions, backed by the adaptive magnetic ride suspension which works wonders with what it got. However, both the Nissan Armada and Ford Expedition get improved clearances of 9.1 and 9.8 inches, respectively. The latter also sports the longest wheelbase of 122.5 inches, while the Chevrolet Tahoe remains identical to the GMC in most aspects. Some of the key features of the exterior of the GMC Yukon AT4 are -

  • 20-inch Off-Road tires
  • Humongous size
  • Huge chrome grille
  • Tough exterior styling
  • Dual front pulling hooks
  • “GMC” lettering on the front grille

2021 GMC Yukon AT4 SUV Safety

When it comes to safety, the 2021 GMC Yukon AT4 displays an average performance. The AT4 gets a four-star rating by the NHTSA. This makes it a safe car for the road but does not make it the safest in the segment in any way. The SUV comes with ABS and traction control. Automatic emergency braking comes as standard which is a nice touch and quite important. Available addons are adaptive cruise control, active lane control, rear camera mirror, and so on. 

The AT4 also comes with 9 cameras that offer all-around visibility, useful for a car of its size. It also comes with a variety of airbags for all passengers from front to side-mounted.

  • All-round airbags safety
  • 9 cameras for all-round vision
  • ABS and Traction Control
  • The automatic safety braking system
  • Automatic Emergency Braking 
  • Active Lane Control

2021 GMC Yukon AT4 SUV Competition

2021 GMC Yukon AT4 Vs Nissan Armada Platinum

The Nissan Armada is a strong competitor with a powerful V8 but with a price tag of $68,000, it fails to offer enough features as the Yukon. The Yukon is also bigger than the Armada and is overall a better pick if you are looking for a Hulk of an SUV.

2021 GMC Yukon AT4 Vs Ford Expedition Limited

The Ford Expedition comes with a much more comparable price tag and offers a long list of features as well. The Expedition has always been one of the top choices in the segment. In comparison to the Yukon, Ford’s twin-turbo V6 makes more power and gives better fuel efficiency as well. Thus making it a better bet than the Yukon.

2021 GMC Yukon AT4 Vs Chevrolet Tahoe Limited

The Tahoe and the Yukon are almost identical in terms of numbers. Even the interior and exterior dimensions are almost the same. The thing that sets them apart is that the Chevrolet is more focused on the daily driver consumer that wants a capable SUV and a people mover, nothing more. The GMC outperforms the Tahoe as it is much more premium and targeted towards the more premium buyer segment.

2021 GMC Yukon AT4 SUV Final Verdict

The 2021 GMC Yukon AT4 is a mixed bag which is tilted more towards the off-road ability and strives to be the range-topper but falls short with most of the convenience features available as add-ons. The AT4 makes sense where the people want to be comfortable and enjoy a posh cabin, but do so while tackling some rough terrains that there may be. The AT4 remains as a solid off-road machine with some tricks up its sleeves but still has a lot to cover for the Luxury part by making more options into standards.