2026 GMC Sierra vs 2026 Rivian R1T
Published figures side by side. Rows where our sources have no value for a vehicle read “Not available”. Configurations differ within a model year, so ranges are shown where they apply.
| Specification | 2026 GMC Sierra | 2026 Rivian R1T |
|---|---|---|
| Engine | ||
| Engine | Varies by configuration: 2.7L 4-cylinder turbocharged (SIDI), 3.0L 6-cylinder turbocharged, 5.3L 8-cylinder (SIDI), 6.2L 8-cylinder (SIDI), 5.3L 8-cylinder (SIDI; FFV) | Quad-Motor / Performance Dual-Motor All-Wheel Drive with air suspension |
| Displacement | 2.7 L to 6.2 L | Not available |
| Cylinders | 4 to 8 | Not available |
| Aspiration | Turbocharged | Not available |
| Power | Not available | 835 hp (623 kW) |
| Torque | Not available | 908 lb-ft (1,231 Nm) |
| Fuel type | Varies by configuration: Gasoline, Diesel, Flex fuel, Electric | Electric |
| Performance | ||
| 0–100 km/h | Not available | 3.0 s |
| Top speed | Not available | 115 mph (185 km/h) |
| Towing capacity | Not available | 11,001 lb (4,990 kg) |
| Payload | Not available | 1,759 lb (798 kg) |
| Transmission and drivetrain | ||
| Transmission | Varies by configuration: Automatic, Single-speed | Single-speed |
| Gears | 1 to 10 | 1 |
| Drivetrain | Varies by configuration: RWD, 4WD | 4WD |
| Dimensions | ||
| Length | Not available | 216.9 in (5,510 mm) |
| Width | Not available | 79.1 in (2,010 mm) |
| Height | Not available | 78.0 in (1,980 mm) |
| Wheelbase | Not available | 135.8 in (3,450 mm) |
| Ground clearance | Not available | 14.9 in (378 mm) |
| Weight | ||
| Curb weight | Not available | 7,147 lb (3,242 kg) |
| Fuel economy and range | ||
| Combined | 25 mpg (9.4 L/100 km) to 15 mpg (15.7 L/100 km) | Not available |
| City | 23 mpg (10.2 L/100 km) to 14 mpg (16.8 L/100 km) | Not available |
| Highway | 28 mpg (8.4 L/100 km) to 16 mpg (14.7 L/100 km) | Not available |
| Electric range | 283 mi (455 km) to 410 mi (660 km) | 258 mi (415 km) to 420 mi (676 km) |
| Battery capacity | Not available | 135.0 kWh |
| Capacity | ||
| Seats | Not available | 5 |
| Doors | Not available | 4 |