84 MPGe combined makes the 2025 Volvo EX90 Twin Motor (21 Inch Wheels) a benchmark in electric luxury SUVs. This efficiency figure is not just competitive but class-leading for a three-row EV designed for family transport and uncompromising Scandinavian safety. This is a vehicle for those who have embraced electric mobility without reservation, understanding that its primary fuel source is electricity, measured and expressed in the equivalent of miles per gallon to provide a familiar comparison. The EX90 is Volvo’s flagship electric SUV, a statement of intent for the brand’s all-electric future, and its efficiency is central to its appeal for affluent, families looking for a premium experience without range anxiety or excessive charging stops. They aren’t just buying an SUV, they’re investing in a lifestyle, where technology, safety, and sustainable operation are important.

City and Highway Performance

The EPA ratings show 86 MPGe in city driving and 82 MPGe on the highway. The slight dip in highway efficiency is typical for electric vehicles, where aerodynamic drag becomes a more significant factor than in stop-and-go city scenarios. For the EX90, even with 21-inch wheels, these figures are impressive. The large battery pack, 111 kWh gross capacity (107 kWh usable), coupled with a powerful dual-motor all-wheel-drive system (delivering 496 hp and 671 lb-ft of torque in Twin Motor Performance guise, or 402 hp and 594 lb-ft in the standard Twin Motor) means sustained highway speeds are effortless, and acceleration is always on tap. The EX90’s thermal management system, designed to keep the battery operating at optimal temperatures, also contributes to consistent performance and efficiency across varying conditions. This vehicle is built for daily commutes, school runs, and long-haul family road trips alike, excelling in both dense urban environments and open stretches of highway.

Annual fuel cost

The EPA’s estimated annual fuel cost for the 2025 Volvo EX90 Twin Motor (21 Inch Wheels) is precisely $900. This figure is calculated based on an assumption of 15,000 miles driven per year, split between 55% city and 45% highway driving, using national average electricity rates. For the buyer of the EX90, this $900 represents a remarkable saving compared to an equivalent gasoline-powered luxury SUV. It shows one of the reasons for electric vehicle ownership: significantly reduced running costs. While the initial purchase price of an EX90 positions it firmly in the premium segment, the long-term operational savings, particularly with home charging, make it an economically sound choice for those with the means to acquire it. This is a tangible benefit that contributes to the vehicle’s overall value.

Real-World Expectations

While EPA ratings provide a standardized benchmark, real-world efficiency for the EX90 Twin Motor will, like any vehicle, depend on driving habits, climate, and charging infrastructure. Drivers who consistently use regenerative braking, especially in city and suburban settings, will often see their efficiency closely match or even exceed the EPA city rating. Conversely, aggressive acceleration, sustained high-speed highway driving, and operation in extreme cold or heat without preconditioning can reduce efficiency. The 21-inch wheels, while visually striking, do contribute to a marginal increase in rolling resistance compared to smaller wheel options, but Volvo’s engineers have worked to mitigate this through aerodynamic design and tire selection. Most EX90 owners will find the vehicle lives up to its efficiency promises, thanks to its well-engineered powertrain and energy management systems. They expect a smooth experience, and the EX90 delivers, minimizing the need to constantly monitor range or search for charging points.

How it compares

The EX90 enters a competitive, albeit nascent, segment of three-row luxury electric SUVs. Its 84 MPGe combined rating is a strong statement. Consider the Tesla Model X Long Range, a direct competitor often lauded for its efficiency, which achieves 102 MPGe combined. The Lucid Gravity, another forthcoming entrant, claims even higher ranges, but official EPA MPGe figures are yet to be released. Closer to its luxury SUV roots, the Mercedes-Benz EQS SUV models (e.g., the EQS 450 4MATIC) typically land in the low 80s MPGe combined, with the 2023 EQS 450 4MATIC achieving 83 MPGe. The Rivian R1S, while a rugged and capable electric utility vehicle, comes in at 73 MPGe combined for dual-motor variants, prioritizing off-road prowess over ultimate efficiency. For those upgrading from a gasoline-powered vehicle, the comparison is even more stark: a large luxury three-row SUV like the BMW X7 xDrive40i usually hovers around 22-25 MPG combined. The EX90 positions itself as a highly efficient option within its premium category, offering leading safety and design without sacrificing practical electric range, particularly for buyers who appreciate all Volvo fuel economy data but are ready for the electric revolution.

Tips to maximize efficiency

Use the EX90’s advanced regenerative braking system by anticipating stops and using a smooth, progressive approach to deceleration. This allows the motors to convert kinetic energy back into electricity for the battery, significantly boosting city driving efficiency.

Maintain proper tire pressure, especially critical with the 21-inch wheels. Under-inflated tires increase rolling resistance, forcing the motors to work harder and consuming more energy. Check pressures regularly, particularly in changing seasons.

Precondition the cabin and battery while still plugged into a charger, especially during extreme temperatures. This uses grid power to bring the systems to optimal operating temperature, preserving battery energy for driving and enhancing passenger comfort upon departure.

Use the EX90’s various drive modes. While the Twin Motor setup delivers formidable power, selecting an “Eco” or similar efficiency-focused mode can subtly adjust accelerator response and climate control settings to conserve battery life without drastically impacting the driving experience.

Plan your routes, taking advantage of charging opportunities, and avoiding excessive short trips where the battery and cabin may not reach optimal temperatures, which can slightly reduce efficiency for the EX90 MPG across all years.