2021 GMC Yukon
Denali 4dr SUV 4WD
Mileage
66,964
Ext. Color
Hunter Metallic
Int. Color
Dark Walnut/Very Dark Ash Gray leather
Engine
gas
Transmission
automatic
Drivetrain
four wheel drive
MPG
14/19 City/Hwy MPGBased on model year EPA mileage ratings for a standardly equipped Yukon. Use for comparison purposes only. Your mileage will vary depending on how you drive and maintain your vehicle, driving conditions, battery-pack age/condition and other factors.
16 Combined MPG
Horsepower
420 hp
Max Towing Capacity
8,000 lbs
Standard Payload Capacity
1,616 lbsBased on vehicle with no options selected. Vehicle options may impact payload capacity. Contact dealer to confirm.
Seats
7Based on default model values and available option information. Contact dealer to confirm.
VIN
1GKS2DKL6MR330135
Stock #
25502B
2021 GMC Yukon – Full-Size Excellence in Motion
The 2021 GMC Yukon redefines what a full-size SUV should be. Powerful, spacious, refined, and technology-forward, the Yukon stands proudly as a symbol of American automotive strength. It’s not just transportation — it’s a statement. At a glance, the 2021 Yukon carries the confidence of a luxury SUV, yet beneath the surface, it offers practical utility, modern comfort, and serious capability.
A Bold New Design
The 2021 GMC Yukon model marks a significant redesign for the Yukon, showcasing a bolder stance and more upscale presence than ever before. The front grille is commanding, accentuated by signature C-shaped LED lighting and sharp character lines that run fluidly across the SUV’s extended body. Whether you’re parking it in front of a business meeting or heading to the lake for the weekend, the Yukon makes an unforgettable impression.
Available in trims like SLE, SLT, AT4, and the luxurious 2021 GMC Yukon Denali, there’s a Yukon for every taste. The AT4 offers off-road ruggedness with skid plates and all-terrain tires, while the Denali speaks to elevated refinement with a unique grille and interior design exclusive to the trim.
Impressive Size Meets Smart Space
Interior spaciousness is a major highlight. The 2021 GMC Yukon is longer and more accommodating than previous generations, with an extended wheelbase that significantly enhances third-row comfort and cargo space. Passengers in the third row won’t feel like an afterthought — they’ll get generous legroom and seating comfort.
With the available power-sliding center console, the 2021 GMC Yukon adds a unique touch of functionality and luxury. The console can move up to 10 inches back and forth, providing access to hidden storage space, which is perfect for securing valuables or organizing essentials.
Cargo capacity is another strong point. With all seats folded down, the Yukon offers an impressive 122.9 cubic feet of maximum cargo volume. Whether you’re moving furniture, packing for a road trip, or just need extra room, this SUV delivers.
Interior Luxury and Comfort
The 2021 GMC Yukon cabin is rich with materials and built with precise craftsmanship. From stitched leather upholstery to real wood trim and brushed aluminum accents, every inch feels carefully considered.
The Denali trim elevates the experience with its own distinctive dashboard layout, separating it visually from other trims. This includes a 15-inch Head-Up Display, a massive 10.2-inch touchscreen infotainment system, and an available panoramic sunroof to flood the interior with natural light.
Heated and ventilated front seats, tri-zone automatic climate control, a premium Bose sound system, and wireless smartphone charging come together to create a cocoon of comfort and convenience.
Power and Performance
Three engines are available for the 2021 GMC Yukon, each offering its own balance of power and efficiency:
- 5.3L V8 (standard on SLE, SLT, and AT4): Produces 355 horsepower and 383 lb-ft of torque.
- 6.2L V8 (standard on Denali): Offers 420 horsepower and 460 lb-ft of torque.
- 3.0L Duramax Turbo-Diesel I6 (available across most trims): Generates 277 horsepower and 460 lb-ft of torque while offering exceptional fuel economy.
All engines are paired with a smooth 10-speed automatic transmission, allowing for responsive and efficient driving dynamics. Whether you’re towing up to 8,400 pounds or simply commuting through the city, the Yukon performs with confidence and poise.
The available Air Ride Adaptive Suspension (standard on Denali and optional on AT4) automatically adjusts ride height and cushioning for better comfort and efficiency. Combine that with the Magnetic Ride Control, and you’re driving one of the most comfortable full-size SUVs on the road today.
Cutting-Edge Technology
The 2021 GMC Yukon is loaded with intuitive technology aimed at keeping you connected, informed, and safe. The centerpiece is the 10.2-inch infotainment touchscreen, which supports Apple CarPlay, Android Auto, Amazon Alexa, and an integrated navigation system.
Passengers will appreciate the available rear-seat media system, which includes dual 12.6-inch touchscreens mounted behind the front headrests — perfect for entertaining kids or long-trip companions.
The Digital Driver Information Center, customizable for each driver, gives instant access to vehicle performance, navigation, and safety alerts without pulling your attention from the road.
Safety is Paramount
GMC’s Pro Safety Plus suite of driver-assist features is standard or available across all trims, providing peace of mind for every journey. Key features include:
- Forward Collision Alert
- Automatic Emergency Braking
- Lane Keep Assist with Lane Departure Warning
- Front Pedestrian Braking
- Following Distance Indicator
- HD Surround Vision (Denali and higher)
These advanced technologies work quietly in the background, always ready to intervene when needed, making the Yukon one of the safest options in the full-size SUV market.
Towing and Utility
The 2021 GMC Yukon isn’t just a family hauler — it’s also a serious towing machine. When properly equipped, it can tow up to 8,400 pounds, making it ideal for trailers, boats, and RVs. Integrated trailering technologies, including trailer sway control and an in-vehicle trailering app, help you tow with confidence and control.
Its four-wheel-drive capability, especially in the AT4 variant, makes it an excellent choice for those who venture off the beaten path or deal with challenging weather conditions.
Fuel Efficiency and Drive Experience
Despite its size, the 2021 GMC Yukon manages decent fuel economy, especially with the Duramax diesel engine. Drivers can expect:
- Gas V8s: Around 15-16 mpg city / 19-20 mpg highway
- Diesel I6: Up to 21 mpg city / 27 mpg highway (RWD configuration)
On the road, the Yukon feels composed and quiet. The ride is smooth, thanks to its advanced suspension system, and cabin noise is well-isolated. Whether you’re navigating city streets, highways, or winding backroads, the Yukon offers a driving experience that feels confident and refined.
Why Choose the 2021 GMC Yukon from DMV Used Cars LLC?
At DMV Used Cars LLC, we understand that purchasing a full-size SUV is more than just selecting a vehicle — it’s choosing a trusted companion for your family’s adventures, workdays, and every moment in between. The 2021 GMC Yukon brings reliability, innovation, and prestige together in a bold package.
Every vehicle at our dealership is hand-selected, thoroughly inspected, and priced competitively to provide unbeatable value. When you purchase your 2021 GMC Yukon from us, you’re not just getting a vehicle — you’re getting peace of mind, exceptional service, and a trusted local partner.
Final Thoughts
The 2021 GMC Yukon isn’t just a large SUV — it’s a masterclass in space, strength, and sophistication. With its bold exterior, luxurious interior, advanced safety and tech features, and multiple configurations to suit different lifestyles, the Yukon sets a high bar in the full-size SUV segment.
Whether you’re a growing family, a weekend adventurer, or someone who simply appreciates quality and presence, the 2021 Yukon is built to deliver. Come experience it for yourself at DMV Used Cars LLC, where premium meets practical, and every drive becomes a statement.
2021 GMC Yukon MPG – Fuel Efficiency in a Full-Size SUV
When people think of full-size SUVs, words like “roomy,” “powerful,” and “luxurious” often come to mind. Fuel efficiency? Not usually. But with the 2021 GMC Yukon, GMC set out to shift that narrative. This bold SUV combines classic power with intelligent engineering — and that includes fuel-conscious engine choices.
The 2021 Yukon isn’t a compact crossover designed for daily commutes; it’s a full-bodied vehicle built for families, adventurers, and professionals who need both power and presence. So while MPG might not be the first specification considered, GMC made strides in fuel efficiency, particularly with the introduction of a new diesel engine option and upgraded engineering.
Let’s explore how the 2021 GMC Yukon performs in terms of fuel economy — across its various engine options, trims, and drive configurations — and what that means for drivers in the real world.
A Lineup Designed for Versatility
Before diving into specific MPG numbers, it’s important to understand the structure of the 2021 GMC Yukon lineup. GMC offers this SUV in several trims and with three different engine choices:
Engine Options:
- 5.3L V8 Gasoline Engine
- 355 horsepower / 383 lb-ft torque
- Standard on SLE, SLT, and AT4
- 6.2L V8 Gasoline Engine
- 420 horsepower / 460 lb-ft torque
- Standard on Denali
- 3.0L Duramax Turbo-Diesel I6
- 277 horsepower / 460 lb-ft torque
- Available on SLE, SLT, and Denali
All engines are paired with a 10-speed automatic transmission, ensuring smoother shifts and better highway cruising efficiency. Rear-wheel drive (RWD) is standard, while four-wheel drive (4WD) is optional for most trims and standard on the AT4.
MPG Ratings Across Trims and Engines
Let’s break down the EPA-estimated MPG (miles per gallon) ratings for each engine configuration of the 2021 GMC Yukon.
1. 5.3L V8 – Gasoline Efficiency
- RWD:
16 MPG city / 20 MPG highway / 18 MPG combined - 4WD:
15 MPG city / 19 MPG highway / 16 MPG combined
The 5.3L V8 is the workhorse of the lineup. While it doesn’t break records for efficiency, its performance is balanced and reliable. For drivers who plan to do a lot of highway driving, expect around 500 miles per tank on the highway (based on a 24-gallon tank). In city driving, the fuel economy dips slightly, but it remains on par with other full-size SUVs in its class.
2. 6.2L V8 – Performance With Premium Power
- RWD:
15 MPG city / 20 MPG highway / 17 MPG combined - 4WD:
14 MPG city / 19 MPG highway / 16 MPG combined
The 6.2L V8 is designed for drivers who want peak performance and capability — and it’s a beast under the hood. Naturally, this comes at a slight cost in fuel efficiency. However, for those who value horsepower and torque, the tradeoff is often well worth it. This engine still manages to remain fairly efficient for its size and power, especially on long-distance trips.
3. 3.0L Duramax Turbo-Diesel – The Efficiency Champion
- RWD:
21 MPG city / 27 MPG highway / 23 MPG combined - 4WD:
20 MPG city / 26 MPG highway / 22 MPG combined
The standout in the 2021 GMC Yukon lineup is the 3.0L Duramax Diesel. It delivers exceptional fuel economy without compromising torque, making it ideal for towing and long drives. It’s perfect for drivers who cover many highway miles or live in rural areas where refueling options may be spaced farther apart. The diesel Yukon is not just the most efficient full-size SUV in its class — it’s also one of the smoothest to drive.
Real-World MPG – What Drivers Report
While EPA numbers are useful benchmarks, real-world MPG often depends on how and where the vehicle is driven. Here’s what many 2021 GMC Yukon drivers report:
- In urban environments, expect numbers close to or slightly below EPA city estimates — especially with frequent stop-and-go traffic.
- On the highway, many drivers exceed EPA ratings, especially with cruise control and moderate speeds.
- For the diesel version, some owners have reported up to 30 MPG on long highway drives, especially when unloaded and on flat terrain.
Driving habits, tire inflation, cargo load, and use of 4WD can all impact these numbers. However, across the board, the Yukon delivers consistent and respectable fuel efficiency for a vehicle of its size.
Fuel Tank Capacity and Range
The 2021 GMC Yukon large fuel tank (approximately 24 gallons) allows it to cover substantial distances between fill-ups, especially in diesel form. Here’s an estimated range breakdown:
- 5.3L V8 (RWD): ~432 miles highway range
- 6.2L V8 (4WD): ~456 miles highway range
- 3.0L Diesel (RWD): ~648 miles highway range
This makes the Yukon an excellent road trip vehicle — minimizing fuel stops and maximizing the journey.
Fuel-Saving Technologies
GMC equipped the 2021 GMC Yukon with several fuel-saving technologies to improve MPG across all engines:
- Automatic Stop/Start: Temporarily shuts off the engine when stopped (e.g., at traffic lights) to reduce fuel consumption.
- Variable Valve Timing & Cylinder Deactivation: The V8 engines can run on fewer cylinders when cruising to save fuel.
- 10-Speed Automatic Transmission: Helps optimize engine performance and fuel use by selecting the most efficient gear ratios.
These subtle but smart systems help enhance efficiency without compromising the Yukon’s signature performance and ride comfort.
Comparing the 2021 GMC Yukon to Competitors
Let’s see how the 2021 GMC Yukon stacks up against rivals:
- Chevrolet Tahoe: Shares many components and matches Yukon’s fuel ratings.
- Ford Expedition: Around 17 MPG combined, slightly better than Yukon’s gas V8s but not as efficient as the diesel Yukon.
- Toyota Sequoia: About 15 MPG combined, less efficient than Yukon overall.
- Nissan Armada: Around 16 MPG combined, again lower than Yukon diesel and on par with Yukon gas engines.
In this context, the 2021 Yukon — especially with the diesel engine — emerges as a segment leader in efficiency.
Final Thoughts: Is the 2021 GMC Yukon Fuel Efficient?
Fuel efficiency may not be the first thing that comes to mind when shopping for a full-size SUV, but GMC has raised the bar with the 2021 Yukon. Offering three distinct engines — including a game-changing Duramax diesel — and incorporating modern fuel-saving tech, the Yukon gives drivers a way to enjoy power, space, and refinement without breaking the fuel budget.
Whether you’re looking for luxury, utility, or a reliable family hauler with surprising highway range, the Yukon offers it all. It’s not just about how many miles you get per gallon — it’s about how far you can go, how comfortably you’ll travel, and how much confidence you’ll have every mile of the way.
2021 GMC Yukon Oil Capacity – Everything You Need to Know
When it comes to maintaining the performance and longevity of a full-size SUV like the 2021 GMC Yukon, oil changes are one of the most critical maintenance tasks. Whether you’re a seasoned DIYer or a Yukon owner who just wants to stay informed, understanding your vehicle’s oil capacity can help you take better care of your engine and avoid costly repairs.
The 2021 Yukon isn’t just any SUV—it’s a powerhouse, available with several engine options designed for strength, versatility, and performance. And with great power comes the need for the right type and amount of oil. In this detailed guide, we’ll explore the oil capacity, types, maintenance tips, and the importance of oil for each engine option available in the 2021 Yukon lineup.
Engine Options in the 2021 GMC Yukon
Before diving into specific oil capacities, let’s take a look at the engine options offered for the 2021 GMC Yukon. This year marked a full redesign of the Yukon, introducing new tech, increased space, and improved engine performance. The oil needs vary depending on which engine your Yukon is equipped with.
The 2021 GMC Yukon comes with three engine choices:
- 5.3L V8 Gasoline Engine
Standard on the SLE, SLT, and AT4 trims. - 6.2L V8 Gasoline Engine
Standard on the Denali trim. - 3.0L Duramax Turbo-Diesel I6
Available on SLE, SLT, and Denali.
Each of these engines has its own specifications when it comes to oil capacity and type.
1. Oil Capacity for the 5.3L V8 Engine
This engine is widely used across many GMC and Chevrolet vehicles, prized for its balance between power and efficiency. It’s a tried-and-true performer under the hood of the Yukon.
- Oil Capacity (with filter): Approximately 8 quarts (7.6 liters)
- Recommended Oil Type: SAE 0W-20 full synthetic oil
- Oil Filter Replacement: Required with each oil change
Why it matters: The 5.3L engine uses Dynamic Fuel Management (DFM), which can deactivate certain cylinders under light loads to save fuel. Clean, high-quality synthetic oil is essential to keep this advanced system operating smoothly. Using the correct oil and amount ensures proper lubrication, cooling, and engine protection under all driving conditions.
2. Oil Capacity for the 6.2L V8 Engine
For those who crave power, the 6.2L V8 delivers 420 horsepower and muscular torque. Found in the Denali, this engine requires a bit more attention due to its high-performance nature.
- Oil Capacity (with filter): Approximately 8 quarts (7.6 liters)
- Recommended Oil Type: SAE 0W-20 full synthetic oil
- Oil Filter Replacement: Required with each oil change
Though it shares the same oil capacity as the 5.3L, the 6.2L V8 benefits from premium synthetic oil due to the engine’s higher output and operating temperature. A clean oil system helps maintain that signature Denali performance and protects vital components like camshafts, lifters, and piston rings.
3. Oil Capacity for the 3.0L Duramax Turbo-Diesel I6
The introduction of a diesel engine in the Yukon was a bold and strategic move, giving drivers outstanding fuel economy and torque for towing. Diesel engines have different oil requirements, and proper care ensures durability and fuel efficiency.
- Oil Capacity (with filter): Approximately 7 quarts (6.6 liters)
- Recommended Oil Type: SAE 0W-20 full synthetic diesel-rated oil (dexosD)
- Oil Filter Replacement: Required with each oil change
The diesel Duramax engine requires oil that can handle soot and high thermal loads. Diesel-rated oils have special additives to manage carbon buildup, which is especially important for turbocharged engines. Skipping oil changes or using incorrect oil can lead to turbo wear, injector issues, or expensive internal damage.
Why Oil Capacity Matters 2021 GMC Yukon
Oil capacity isn’t just a number—it’s directly related to your engine’s health. Having the right amount of oil:
- Prevents Engine Wear: Too little oil means insufficient lubrication, increasing friction and wear.
- Controls Engine Temperature: Oil helps carry heat away from vital engine parts.
- Cleans the Engine: Detergents and dispersants in modern oils help remove contaminants and sludge.
- Supports Fuel Economy: Clean, properly-filled oil reduces drag and improves engine efficiency.
Overfilling the engine can also be harmful, leading to frothy oil (aeration), increased pressure, and even seal damage.
Oil Change Intervals for the 2021 GMC Yukon
Your Yukon is equipped with an Oil Life Monitoring System, which tells you when it’s time for a change. However, a general guideline based on engine type and usage is:
- Normal driving: Every 7,500 to 10,000 miles
- Severe driving (towing, extreme temperatures, dusty conditions): Every 5,000 miles
For the diesel engine, more frequent oil changes may be recommended depending on idle time and usage type.
Always check the dipstick level after each oil change, run the engine briefly, then let it sit and check again to ensure proper levels.
DIY Oil Change Tips For the 2021 GMC Yukon
If you’re the hands-on type who enjoys DIY maintenance, here are a few pointers:
- Warm up the engine before draining the oil — this allows for a more complete drain.
- Use a quality oil filter — GMC recommends OEM or equivalent high-efficiency filters.
- Double-check the capacity — Don’t assume all engines take the same amount.
- Use a torque wrench to tighten the drain plug to manufacturer specifications (typically 18–20 ft-lbs).
- Recycle your oil — Most auto parts stores will take used oil for free.
Signs You May Be Low on Oil
Whether you’re driving through city streets or towing a boat on the highway, be aware of signs that you might be low on oil:
- Oil pressure warning light on the dash
- Louder engine sounds (tapping or knocking)
- Burning oil smell
- Decreased performance or rough idling
Check your oil level monthly and top off if necessary. Always keep a quart of the correct oil in the trunk — it can save you from a costly breakdown.
Final Thoughts
The 2021 GMC Yukon is more than just a full-size SUV — it’s a carefully engineered machine designed to perform, endure, and impress. But to keep it running at its best, understanding and maintaining the proper oil capacity is crucial.
Whether you drive the 5.3L, 6.2L, or the efficient 3.0L Duramax diesel, your Yukon depends on quality oil and correct levels to stay healthy. Routine oil checks and timely changes are a small investment for long-term performance, smoother rides, and engine longevity.
So next time you’re under the hood or in the service bay, you’ll know exactly what your Yukon needs — because taking care of your oil is like taking care of the SUV’s beating heart.
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