Comparison tool
Two vehicles, one set of assumptions
Pick up to four exact EPA configurations. All get the same mileage, driving mix, and energy prices — so the difference you see is the vehicles, not the assumptions. Gasoline and electricity are always priced separately; MPGe is never treated as MPG.
Vehicle A
or pick step by step
Selected: 2026 Rivian R1S Dual Standard (22in) · electric motor (208 kW ACPM) · Part-time 4WD · details
Vehicle B
or pick step by step
Selected: 2026 Tesla Model X · electric motor (246 and 251 kW ACPM) · AWD · details
Shared assumptions — applied to both vehicles
mi/year
Driving mix55% city / 45% highway
$/kWh
At these assumptions, the 2026 Tesla Model X costs $14.09 less per month ($169/year, $845 over five years) than the 2026 Rivian R1S Dual Standard (22in). This is the measured energy-cost difference only — not a statement that either vehicle is better.
2026 Rivian R1S Dual Standard (22in)2026 Tesla Model X
Per month
Per year
5 years
| Measure | 2026 Rivian R1S Dual Standard (22in) | 2026 Tesla Model X | Difference (A − B) |
|---|---|---|---|
| Cost per month | $73.15 | $59.06 | $14.09 |
| Cost per year | $878 | $709 | $169 |
| Cost over 5 years | $4,390 | $3,545 | $845 |
| Cost per mile | 7.3¢/mi | 5.9¢/mi | 1.4¢ |
| Annual energy used | 4,786 kWh | 3,864 kWh | different units listed separately |
| EPA efficiency | 39.9 kWh/100 mi | 32.2 kWh/100 mi | — |
2026 Rivian R1S Dual Standard (22in): EPA electricity consumption is measured from the wall outlet, so typical home AC charging losses are already included. Public DC fast-charging prices, extreme temperatures, and driving style can change real-world cost.
2026 Tesla Model X: EPA electricity consumption is measured from the wall outlet, so typical home AC charging losses are already included. Public DC fast-charging prices, extreme temperatures, and driving style can change real-world cost.