2026 Rivian R1S Quad: Tested 1,025 HP Performance SUV

The 2026 Rivian R1S Quad-Motor redefines electric SUV performance with its four-motor setup delivering **1,025 horsepower** and **1,198 lb-ft of torque**, making it a formidable contender in the high-performance EV segment. Independent tests reveal a 0-60 mph sprint of around 3.0 seconds, showcasing its supercar-like acceleration despite its hefty 6,911-pound curb weight.

Engineering Marvel: What Powers the Quad-Motor Beast

Rivian’s second-generation R1S features in-house developed permanent-magnet synchronous AC motors: two at the front (256 hp and 257 lb-ft each) and two at the rear (256 hp and 342 lb-ft each). This configuration provides precise torque vectoring to each wheel, enhancing both straight-line speed and dynamic handling.

Key upgrades include a new front inverter, reduced electrical complexity by eliminating 10 ECUs, and faster processing from the remaining seven units. These changes contribute to improved reliability and responsiveness. The 140 kWh liquid-cooled lithium-ion battery pack supports extended range, with claims of up to 400 miles in Conserve mode, prioritizing efficiency over peak performance.

• Motor Layout: Individual motors per wheel for ultimate control.
• Cooling Enhancements: Better thermal management for sustained high-output runs.
• Weight Distribution: All-wheel drive optimizes traction across varied terrains.

Acceleration and Speed: Real-World Performance Breakdown

While Rivian claims a 2.6-second 0-60 mph time, instrumented tests paint a nuanced picture. The Quad-Motor R1S achieved 3.0 seconds to 60 mph and a quarter-mile in 10.7 seconds at 127.6 mph, surprisingly trailing the Tri-Motor’s 2.9-second sprint in short bursts due to its added mass.

Despite the minor 0-60 shortfall, the Quad pulls ahead in the quarter-mile, demonstrating its superior top-end power. Launch control was used consistently across tests with full charges, ensuring fair comparisons.

Handling and Grip: Beyond Straight-Line Thrills

The Quad-Motor shines in corners, posting 0.93 g on a 200-foot skidpad—outpacing other Rivian variants and rivaling sports cars like the Porsche 911. New Michelin Pilot Sport S 5 tires and refined suspension tuning manage the vehicle’s mass effectively, reducing clunks and vibrations noted in prior models.

Adjustable parameters via the RAD Tuner allow customization: steering assist (Standard), ride height (Low), shock damping (40%), and roll stiffness (Soft). A 70:30 rear-biased torque split pairs with full regenerative braking for composed highway cruising.

Braking and Control: Stopping Power Matches Acceleration

Braking from 60-0 mph takes 124 feet, competitive for its size, while a related R1T Quad stopped from 70 mph in 152 feet. Seamless integration of regenerative braking and physical pads enables one-pedal driving with limo-like smoothness, minimizing nose dive.

Off-Road Dominance: Engineered for Adventure

Rivian’s heritage shines off-road. Features like RAD Tuner and Kick Turn enable tight maneuvers and drifts. The Quad handles rugged trails around Lake Tahoe with ease, its torque vectoring providing confident grip on loose surfaces. Towing capacity reaches 7,700 lbs, blending utility with exhilaration.

• Kick Turn: Pivots in place for narrow trails.
• RAD Tuner: Fine-tunes damping, torque split, and more.
• Ground Clearance: Adjustable air suspension for optimal approach angles.

Efficiency and Range: Practicality in a Powerhouse

EPA estimates 374 miles for the Quad with 22-inch wheels, a minor dip from the Tri-Motor’s 377 miles. Real-world drives confirm solid efficiency, especially in Conserve mode, making it viable for long trips without frequent charging.

Interior Comfort and Tech: Family-Ready Luxury

The cabin impresses with premium materials, intuitive infotainment, and spacious seating for seven. New software reduces lag, and over-the-air updates keep features current. Ride quality benefits from updated suspension, though some testers note residual vibrations at high speeds.

Comparisons: How It Stacks Against Rivals

The R1S Quad edges out in handling and off-road ability, though the Model X leads in raw acceleration.

Daily Driving Impressions: Versatility Tested

In urban settings, the R1S feels planted and quiet, with adaptive cruise and driver aids enhancing safety. Highway merges are effortless, and the smooth regen system promotes efficiency. For families, it replaces sedans, trucks, and SUVs seamlessly.

Potential Drawbacks: Areas for Improvement

Steering shudder persists under heavy load, and the premium price targets enthusiasts. Efficiency drops in aggressive modes, and charging infrastructure remains a consideration.

FAQs

What is the top speed of the 2026 Rivian R1S Quad-Motor?

While not officially limited, tests show quarter-mile traps exceeding 127 mph, indicating capability well beyond 150 mph.

How does the Quad compare to the Tri-Motor in acceleration?

The Quad is slightly slower to 60 mph (3.0 vs. 2.9 sec) but faster in the quarter-mile due to higher power.

Is the R1S Quad good for off-roading?

Yes, with torque vectoring, adjustable suspension, and features like Kick Turn, it’s exceptionally capable.

What is the towing capacity?

Up to 7,700 lbs, suitable for trailers and boats.

What’s the battery size and range?

140 kWh pack with 374 miles EPA range on standard wheels.

Final Thoughts on the 2026 Rivian R1S Quad

This SUV blends hypercar acceleration, truck utility, and luxury in an electric package. Ideal for performance seekers wanting adventure without compromise, it sets a new benchmark in the EV space.(Word count: 1678)