GMC Sierra 3500 HD vs Rivian R1T
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2027 Rivian R1T
Overview
| Spec | GMC Sierra 3500 HDPro | Rivian R1TPremium |
|---|---|---|
| Selected trim | Pro | Premium |
| Body style | Truck (Regular Cab) | Truck (Crew Cab) |
| Drivetrain | rear wheel drive | all wheel drive |
| Fuel type | regular unleaded | electric |
| Transmission | 10-speed shiftable automatic | 1-speed direct drive |
| Engine type | gas | electric |
| Model year | 2026 | 2027 |
Pricing & market
| Spec | GMC Sierra 3500 HDPro | Rivian R1TPremium |
|---|---|---|
| MSRP | $47,900 (best) | $79,990 |
| Lowest listing price | $88,775 (best) | — |
| Median listing price | $88,775 (best) | — |
| Highest listing price | $88,775 (best) | — |
| For sale now | 1 (best) | 0 |
Fuel economy & range
| Spec | GMC Sierra 3500 HDPro | Rivian R1TPremium |
|---|---|---|
| Combined MPGe | — | 85 MPGe (best) |
| Electric range | — | 329 mi (best) |
| Battery capacity | — | 108 kWh (best) |
| 240V charge time | — | 12 hr (best) |
| Fuel tank | 36 gal (best) | — |
Performance
| Spec | GMC Sierra 3500 HDPro | Rivian R1TPremium |
|---|---|---|
| Horsepower | 401 hp | 533 hp (best) |
| Torque | 464 lb-ft | 610 lb-ft (best) |
| Engine size | 6.6 L (best) | — |
| Cylinders | V8 | — |
Size & capability
| Spec | GMC Sierra 3500 HDPro | Rivian R1TPremium |
|---|---|---|
| Seating | 3 seats | 5 seats (best) |
| Doors | 2 | 4 (best) |
| Cargo volume | — | 21.6 cu ft (best) |
| Towing capacity | 14,500 lbs (best) | 7,700 lbs |
| Payload | 4,583 lbs (best) | 2,116 lbs |
| Curb weight | 6,329 lbs (best) | — |
| Ground clearance | 11.2 in (best) | — |
| Wheelbase | 142 in (best) | 135.8 in |
| Length | 236.3 in (best) | 217.1 in |
| Width | 81.9 in | 82 in (best) |
| Height | 80.9 in (best) | 78.2 in |
Safety & recalls
| Spec | GMC Sierra 3500 HDPro | Rivian R1TPremium |
|---|---|---|
| Open recalls (YMM scope) | None reported | None reported |
Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.
Trim overview
All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.
| Trim | GMC Sierra 3500 HD | Rivian R1T |
|---|---|---|
| 1 | Pro $47,900 MSRP(Currently comparing) | Premium $79,990 MSRP(Currently comparing) |
| 2 | Pro $49,300 MSRP | Premium $86,990 MSRP |
| 3 | Pro $50,000 MSRP | Performance $100,990 MSRP |
| 4 | Pro $51,400 MSRP | Quad $115,990 MSRP |
| 5 | Pro $51,600 MSRP | — |
| 6 | Pro $51,800 MSRP | — |
| 7 | Pro $53,200 MSRP | — |
| 8 | Pro $50,700 MSRP | — |
| 9 | Pro $52,100 MSRP | — |
| 10 | Pro $52,800 MSRP | — |
| 11 | Pro $54,200 MSRP | — |
| 12 | Pro $54,400 MSRP | — |
| 13 | Pro $54,600 MSRP | — |
| 14 | Pro $56,000 MSRP | — |
| 15 | SLE $54,700 MSRP | — |
| 16 | SLE $56,200 MSRP | — |
| 17 | SLE $57,000 MSRP | — |
| 18 | SLE $58,400 MSRP | — |
| 19 | SLE $58,600 MSRP | — |
| 20 | SLE $58,800 MSRP | — |
| 21 | SLE $60,100 MSRP | — |
| 22 | SLT $65,900 MSRP | — |
| 23 | SLT $66,100 MSRP | — |
| 24 | SLT $67,500 MSRP | — |
| 25 | AT4 $72,800 MSRP | — |
| 26 | AT4 $73,000 MSRP | — |
| 27 | Denali $76,100 MSRP | — |
| 28 | Denali $76,300 MSRP | — |
| 29 | Denali $79,100 MSRP | — |
| 30 | Denali Ultimate $97,200 MSRP | — |
| 31 | Denali Ultimate $97,400 MSRP | — |
| 32 | Denali Ultimate $101,300 MSRP | — |
Live inventory
GMC Sierra 3500 HD vs Rivian R1T FAQ
- Which is better: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- It depends on priorities. OpenDealer compares 2026 GMC Sierra 3500 HD vs 2027 Rivian R1T on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- Based on starting MSRP, the 2026 GMC Sierra 3500 HD starts lower at $47,900. Live GMC Sierra 3500 HD listings start at $88,775.
- Which has better startingMsrp: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- The 2026 GMC Sierra 3500 HD leads on startingMsrp in this comparison (47,900).
- Which has better electricRangeMi: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- The 2027 Rivian R1T leads on electricRangeMi in this comparison (420).
- Which has better horsepower: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- The 2027 Rivian R1T leads on horsepower in this comparison (1,025).
- Which has better seats: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- The 2026 GMC Sierra 3500 HD leads on seats in this comparison (6).
- Which has better maxTowingLbs: 2026 GMC Sierra 3500 HD or 2027 Rivian R1T?
- The 2026 GMC Sierra 3500 HD leads on maxTowingLbs in this comparison (20,000).