104 MPG combined. That’s the EPA rating for the 2024 Subaru Solterra AWD. It runs entirely on electricity, and that EPA number reflects the equivalent efficiency compared to a gasoline-powered car. The Solterra appeals to someone who wants Subaru’s legendary all-wheel-drive capability, lower fuel costs, and cares primarily about commuting, running errands, and weekend adventures within a predictable range. For these buyers, the “fuel economy” is outstanding, even if its range isn’t class-leading.

City and highway performance

The Solterra’s EPA ratings break down to 114 MPG in the city and 94 MPG on the highway. This difference is due to the nature of electric motors. City driving, with its frequent stop-and-go, allows the Solterra to regenerate energy through regenerative braking, capturing kinetic energy and converting it back into electricity to recharge the battery. Highway driving, with its constant speed and reduced braking, offers less opportunity for regeneration, leading to a slightly lower efficiency rating. While some EVs see drastically reduced range at higher speeds, the Solterra’s all-wheel-drive system and aerodynamics have been optimized to minimize this drop-off, leading to a highway number that remains respectable.

Annual fuel cost

Based on EPA estimates, the annual fuel cost for the 2024 Subaru Solterra AWD is $700. This calculation assumes 15,000 miles of driving per year, using national average electricity prices. Of course, your actual cost could vary depending on your driving habits, local electricity rates, and whether you charge primarily at home or at public charging stations. Charging at home, especially during off-peak hours, will almost always result in significantly lower costs than relying solely on public charging networks.

Real-world expectations

EPA numbers provide a useful benchmark, but real-world efficiency can vary. Factors like driving style, weather conditions (cold weather can significantly reduce battery range), and cargo weight can all impact the actual mileage you achieve. Expect the SOLTERRA MPG across all years to fluctuate based on these variables. Aggressive driving will drain the battery faster, while gentle acceleration and anticipatory braking will maximize range. Using climate control, especially heating, can also draw power and reduce overall efficiency. The Solterra’s all-wheel-drive system, while excellent for traction, also adds weight and complexity, impacting efficiency compared to front-wheel-drive EVs.

How it compares

The Solterra competes in a crowded segment of electric SUVs. The Hyundai Kona Electric (around 120 MPGe combined) typically offers slightly better efficiency but lacks standard all-wheel drive. The Kia Niro EV (around 113 MPGe combined) presents another option with similar efficiency and available front-wheel drive. The Ford Mach-E Premium AWD can achieve approximately 90-100 MPGe combined, putting it slightly behind the Solterra. Buyers choosing the Subaru are often prioritizing the brand’s reputation for reliability and the added confidence of standard all-wheel drive, even if it means a slight compromise on ultimate range and efficiency compared to some competitors. Considering all Subaru fuel economy data gives additional context when shopping this segment.

Tips to maximize efficiency

Preconditioning the battery is important, especially in cold weather. Use the Solterra’s app to warm up the battery while it’s still plugged in. This draws power from the grid rather than the battery, preserving range and ensuring optimal performance.

Regenerative braking is helpful. Familiarize yourself with the various regen settings and use them strategically. Stronger regen settings allow for near one-pedal driving, maximizing energy capture and reducing wear on the conventional brakes.

Pay attention to tire pressure. Properly inflated tires reduce rolling resistance, improving efficiency. Check your tire pressure regularly and inflate to the recommended levels found on the doorjamb sticker.

Minimize aerodynamic drag. Remove roof racks or cargo carriers when not in use, as these can significantly increase drag and reduce efficiency, especially at highway speeds.

Plan your routes strategically. Use the Solterra navigation system to identify charging stations along your route, especially on longer trips. Planning can help you avoid range anxiety and make charging stops for efficiency.