Mercedes-Benz GLS450 vs Rivian R1S
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2026 Rivian R1S
Overview
| Spec | Mercedes-Benz GLS450GLS 450 4MATIC | Rivian R1SDual Standard |
|---|---|---|
| Selected trim | GLS 450 4MATIC | Dual Standard |
| Body style | SUV | SUV |
| Drivetrain | all wheel drive | all wheel drive |
| Fuel type | premium unleaded (required) | electric |
| Transmission | 9-speed shiftable automatic | 1-speed direct drive |
| Engine type | mild hybrid | electric |
| Model year | 2026 | 2026 |
Pricing & market
| Spec | Mercedes-Benz GLS450GLS 450 4MATIC | Rivian R1SDual Standard |
|---|---|---|
| MSRP | $90,250 | $76,990 (best) |
| Lowest listing price | — | $61,999 (best) |
| Median listing price | — | $65,342 (best) |
| Highest listing price | — | $86,199 (best) |
| For sale now | 0 | 5 (best) |
Fuel economy & range
| Spec | Mercedes-Benz GLS450GLS 450 4MATIC | Rivian R1SDual Standard |
|---|---|---|
| Combined MPG | 21 MPG (best) | — |
| City MPG | 19 MPG (best) | — |
| Highway MPG | 24 MPG (best) | — |
| Combined MPGe | — | 79 MPGe (best) |
| Electric range | — | 258 mi (best) |
| Battery capacity | — | 106 kWh (best) |
| 240V charge time | — | 9.5 hr (best) |
| Fuel tank | 23.8 gal (best) | — |
Performance
| Spec | Mercedes-Benz GLS450GLS 450 4MATIC | Rivian R1SDual Standard |
|---|---|---|
| Horsepower | 375 hp | 533 hp (best) |
| Torque | 369 lb-ft | 610 lb-ft (best) |
| Engine size | 3 L (best) | — |
| Cylinders | I6 | — |
Size & capability
| Spec | Mercedes-Benz GLS450GLS 450 4MATIC | Rivian R1SDual Standard |
|---|---|---|
| Seating | 7 seats | 7 seats |
| Doors | 4 | 4 |
| Cargo volume | 84.7 cu ft | 105.8 cu ft (best) |
| Towing capacity | 7,700 lbs | 7,700 lbs |
| Payload | — | 2,017 lbs (best) |
| Curb weight | 5,523 lbs (best) | — |
| Ground clearance | 7.9 in | 8.7 in (best) |
| Wheelbase | 123.4 in (best) | 121.1 in |
| Length | 205 in (best) | 200.8 in |
| Width | 79.9 in | 82 in (best) |
| Height | 71.8 in | 76.8 in (best) |
Safety & recalls
| Spec | Mercedes-Benz GLS450GLS 450 4MATIC | Rivian R1SDual Standard |
|---|---|---|
| Open recalls (YMM scope) | None reported (best) | 2 |
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 | Mercedes-Benz GLS450 | Rivian R1S |
|---|---|---|
| 1 | GLS 450 4MATIC $90,250 MSRP(Currently comparing) | Dual Standard $76,990 MSRP(Currently comparing) |
| 2 | — | Dual $83,990 MSRP |
| 3 | — | Dual $90,990 MSRP |
| 4 | — | Tri $106,990 MSRP |
| 5 | — | Quad $121,990 MSRP |
| 6 | — | Quad Launch Edition $125,990 MSRP |
Live inventory
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Mercedes-Benz GLS450 vs Rivian R1S FAQ
- Which is better: 2026 Mercedes-Benz GLS450 or 2026 Rivian R1S?
- It depends on priorities. OpenDealer compares 2026 Mercedes-Benz GLS450 vs 2026 Rivian R1S on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2026 Mercedes-Benz GLS450 or 2026 Rivian R1S?
- Based on starting MSRP, the 2026 Rivian R1S starts lower at $76,990. Live Rivian R1S listings start at $61,999.
- Which has better startingMsrp: 2026 Mercedes-Benz GLS450 or 2026 Rivian R1S?
- The 2026 Rivian R1S leads on startingMsrp in this comparison (76,990).
- Which has better combinedMpg: 2026 Mercedes-Benz GLS450 or 2026 Rivian R1S?
- The 2026 Mercedes-Benz GLS450 leads on combinedMpg in this comparison (21).
- Which has better electricRangeMi: 2026 Mercedes-Benz GLS450 or 2026 Rivian R1S?
- The 2026 Rivian R1S leads on electricRangeMi in this comparison (410).
- Which has better horsepower: 2026 Mercedes-Benz GLS450 or 2026 Rivian R1S?
- The 2026 Rivian R1S leads on horsepower in this comparison (1,025).