2026 GMC Sierra EV vs 2026 Rivian R1T

$62,400 · Truck

$70,990 · Truck

Comparison Overview

The 2026 GMC Sierra EV barrels onto the scene promising monumental power with 605 hp, clearly targeting those who crave raw straight-line thrust and immediate electrification in a traditional truck silhouette. Its commanding presence is reflected in its larger footprint, measuring 233.4 inches long. In contrast, the 2026 Rivian R1T offers a more refined, adventure-ready package, prioritizing nuanced torque delivery at 610 lb-ft and superior cargo flexibility with 21.6 cu ft. While the Sierra EV boasts a slightly superior maximum electric range of 283 miles, the R1T compensates with a notable 72 fewer horsepower but offers a more compact 217.1-inch length. The $8,590 difference in MSRP heavily sways the value proposition, pushing the Sierra EV ahead on initial cost for its higher horsepower output.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 GMC Sierra EV

The Sierra EV wins for commuters due to its slightly higher 283-mile electric range, offering more reassurance on daily routes.

👨‍👩‍👧‍👦 Best for Families

2026 Rivian R1T

The Rivian R1T provides nearly double the enclosed storage space, boasting 21.6 cu ft versus the Sierra EV's 11 cu ft.

🏎️ Best for Enthusiasts

2026 GMC Sierra EV

Enthusiasts seeking maximum instantaneous grunt will prefer the Sierra EV's commanding 605 horsepower advantage over the R1T's 533 hp.

💰 Best Value

2026 GMC Sierra EV

The Sierra EV is the clear value winner, delivering 605 horsepower for an MSRP starting at $62,400, undercutting the R1T significantly.

Choose the GMC Sierra EV if...

You prioritize maximizing electric range, as the Sierra EV offers 283 miles compared to the R1T's 258 miles.
You need the most power for towing or straight-line acceleration, benefitting from the Sierra EV's 605 horsepower.
Saving approximately $8,590 on the initial purchase price is a primary concern.

Choose the Rivian R1T if...

You plan to carry significant gear inside the bed area, as the R1T provides 21.6 cu ft of cargo capacity.
You prefer a slightly more torquey feel off the line, as the R1T delivers 610 lb-ft versus the Sierra EV's 605 lb-ft.
You desire a marginally shorter vehicle, with the R1T's 217.1-inch length being easier to maneuver than the Sierra EV's 233.4 inches.

Key Dimensions

Dimension	GMC Sierra EV	Rivian R1T
Length	233.4"	217.1"
Width	83.8"	82.0"
Height	78.0"	78.2"
Wheelbase	146.0"	135.8"

Features Comparison

Safety

Feature	GMC	Rivian
Blind Spot Monitor	✓	✓
Lane Departure Warning	✓	✓
Lane Keeping Assist System	✓	✓
Front Cross Traffic Alert	✓	—
Rear Cross Traffic Alert	✓	✓
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Front Head Airbags	✓	✓
Rear Head Airbags	✓	✓
Passenger Airbag Occupant Sensing Deactivation	✓	✓
Electronic Stability Control	✓	✓
Traction Control System	✓	✓
LATCH System	✓	✓
Rear Door Child Safety Locks	✓	✓
Anti-lock Brakes (ABS)	4-Wheel	4-Wheel
Front Ventilated Disc Brakes	✓	✓
Rear Ventilated Disc Brakes	✓	—
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Daytime Running Lights	✓	✓
Front Fog Lights	✓	—
Front Headrests	2	2
Front Height Adjustable Headrests	✓	—
Rear Headrests	2	3
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Driver Attention Alert	—	✓
Rear Solid Disc Brakes	—	✓
Adaptive Headlights	—	✓
Cornering Lights	—	✓
Integrated Turn Signal Mirrors	—	✓
Front Integrated Headrests	—	✓
Engine Immobilizer	—	✓

Engine

Feature	GMC	Rivian
Base Engine Type	electric	electric
Horsepower	605 hp	533 hp
Torque	605 lb-ft	610 lb-ft

Drive Train

Feature	GMC	Rivian
Transmission Type	1-speed direct drive	1-speed direct drive
Drivetrain Type	four wheel drive	all wheel drive
4WD System Type	On Demand	—
Hill Descent Control	✓	—

Fuel

Feature	GMC	Rivian
Fuel Type	electric	electric
EPA Efficiency (City/Highway MPGe)	74/60 MPGe	85/72 MPGe
EPA Efficiency (Combined MPGe)	67 MPGe	79 MPGe
EPA Electric Driving Range	283 mi.	258 mi.
EPA Energy Consumption (kWh/100 mi)	50	43
Charging Time (240V)	11.5 hr.	9.5 hr.
Battery Capacity	119 kWh	106 kWh
DC Fast Charging Port Type	SAE Combo	SAE Combo

Comfort & Convenience

Feature	GMC	Rivian
Push Button Start	✓	—
Tilt and Telescopic Steering Wheel	✓	—
Audio Controls on Steering Wheel	✓	✓
Cruise Control on Steering Wheel	✓	✓
Electric Power Steering	✓	✓
Front View Camera	✓	✓
Side View Camera	✓	✓
Rear View Camera	✓	✓
Front Parking Sensors	✓	✓
Rear Parking Sensors	✓	—
Wireless Charging Pad	✓	✓
Adaptive Cruise Control	✓	✓
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Heated Steering Wheel	✓	✓
Dual Zone Climate Control	✓	—
Rear Ventilation Ducts with Fan Control	✓	✓
Interior Air Filtration	✓	✓
Sun Sensor	✓	—
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Power Tilt and Telescopic Steering Wheel	—	✓
Rear Parking Sensors with Side Sensing	—	✓
Leatherette Steering Wheel	—	✓
Extended Cabin Heating/Cooling	—	✓
Turn Signal Indicators in Mirrors	—	✓
Four Zone Climate Control	—	✓

In Car Entertainment

Feature	GMC	Rivian
Infotainment Display	16.8 in	15.6 in
AM/FM Stereo	✓	✓
Speaker System	6	10
USB Port	✓	✓
USB Port with External Media Control	✓	—
Satellite Radio	✓	—
Speed Sensitive Volume Control	✓	✓
Stereo Power	—	600W
Surround Audio	—	Discrete

Power Feature

Feature	GMC	Rivian
One-Touch Power Windows	4	4
Keyless Entry	✓	—
Heated Mirrors	✓	✓
Moonroof Type	—	1st Row Fixed Glass Extended
Remote Keyless Entry	—	✓

Frontseats

Feature	GMC	Rivian
Front Head Room	43.9 in.	41.1 in.
Front Leg Room	44.9 in.	41.4 in.
Front Shoulder Room	64.0 in.	60.6 in.
Front Hip Room	61.3 in.	54.9 in.
Seat Material: Leatherette	✓	✓
Front Seat Type: Bucket	✓	✓
Driver Seat Power Adjustments	8-way	8-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Passenger Seat Manual Adjustments	4-way	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Memory Settings	—	1
Passenger Seat Power Adjustments	—	8-way
Passenger Seat Height Adjustment	—	✓
Driver Seat Ventilation	—	✓
Passenger Seat Ventilation	—	✓

Rearseats

Feature	GMC	Rivian
Rear Head Room	38.7 in.	39.7 in.
Rear Leg Room	44.3 in.	36.6 in.
Rear Shoulder Room	63.3 in.	58.9 in.
Rear Hip Room	60.8 in.	54.2 in.
Split-Folding Rear Seatback	✓	✓
Folding Center Armrest	—	✓
Heated Rear Seats (Multi-Level)	—	✓

Tires and Wheels

Feature	GMC	Rivian
Wheel Finish	Painted Alloy	—
Wheel Size	18 x 8.5 in	—
Tire Type	All Season	All Season
Tire Size	LT265/70R18	275/60R H
Spare Tire Type	Full Size Non-Matching	—
Spare Tire Location	Underbody Mounted	—
Painted Alloy Wheels	—	✓
Polished Alloy Wheels	—	✓
Wheel Diameter	—	20 in.

Suspension

Feature	GMC	Rivian
Four-Wheel Independent Suspension	✓	✓

Warranty

Feature	GMC	Rivian
Basic Warranty	3 yr./ 36000 mi.	4 yr./ 50000 mi.
EV Battery Warranty	8 yr./ 100000 mi.	8 yr./ 120000 mi.
Corrosion/Rust Warranty	6 yr./ 100000 mi.	8 yr./ unlimited mi.
Roadside Assistance	8 yr./ 100000 mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	1 yr./ unlimited mi.	—
Drivetrain Warranty	—	8 yr./ 120000 mi.

Frequently Asked Questions

Common questions about comparing the 2026 GMC Sierra EV and 2026 Rivian R1T.

Which truck handles significantly better in tight urban environments?

The 2026 Rivian R1T is physically smaller, measuring 217.1 inches long and 82.0 inches wide, which should provide an advantage in parking lots compared to the considerably larger 233.4-inch long Sierra EV.

What is the difference in electric driving range between these two models?

The GMC Sierra EV offers a longer EPA-estimated range of 283 miles on a single charge. The Rivian R1T trails slightly with a range of 258 miles.

How much more horsepower does the Sierra EV have over the Rivian R1T?

The 2026 GMC Sierra EV boasts 605 horsepower, giving it a significant edge of 72 horsepower over the 2026 Rivian R1T's output of 533 horsepower.

Is the cost difference between the two vehicles substantial?

Yes, the MSRP difference is notable, with the Sierra EV starting at $62,400, making it $8,590 cheaper than the Rivian R1T's starting price of $70,990.

Does the lower starting price of the Sierra EV mean it has less torque?

Despite the lower price, the Sierra EV still offers impressive twisting force at 605 lb-ft of torque, although the R1T technically edges it out with 610 lb-ft.

Which vehicle provides more practical enclosed storage for gear?

The Rivian R1T is superior for cargo capacity, offering 21.6 cubic feet of enclosed storage space, significantly more than the 11 cubic feet available in the Sierra EV.