The 2019 Volvo S90 T8 eAWD Plug-In Hybrid has a combined fuel economy of 29 MPG, a figure that’s arguably secondary to providing easy, refined transportation. This isn’t a workaday sedan purchased solely on budget; this is deliberate luxury, prioritizing quiet power delivery and a whisper-quiet cabin experience over thriftiness. Let’s examine what that 29 MPG represents.

City and highway performance

The EPA rates the 2019 Volvo S90 T8 plug-in hybrid at 26 MPG in the city and 33 MPG on the highway. These figures reflect how the gasoline engine and the electric motor work together. The city MPG demonstrates the benefit of the electric motor during stop-and-go driving, where regenerative braking can recapture energy. The highway number acknowledges the gasoline engine at higher speeds where electric motor efficiency decreases. This split suggests the S90 T8 performs best for drivers who mix city and highway driving, using the electric motor for shorter trips and leaning on the gasoline engine for longer commutes.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2019 Volvo S90 T8 eAWD Plug-In Hybrid is $2,000. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Individual driving habits and local fuel prices will significantly impact the actual cost. Drivers who regularly use the S90’s plug-in capabilities and primarily drive short distances could see a decrease in their annual fuel expenses, potentially cutting that $2,000 figure in half. Those who rarely plug in or primarily drive long distances will likely find themselves spending closer to, or even exceeding, the EPA’s estimate. This also assumes use of premium fuel, which is recommended for the turbocharged engine with electric motor.

Real-world expectations

While the EPA provides a standardized rating, real-world fuel economy for the S90 T8 is variable. Factors such as driving style, weather conditions, and the frequency of charging the battery influence the car’s efficiency. Drivers with a light foot and regular charging can often surpass the EPA’s combined rating, especially on shorter commutes. Aggressive driving, extreme temperatures, and infrequent charging will push the MPG closer to that of a traditional gasoline-powered luxury sedan. The key to maximizing fuel economy in the S90 T8 lies in understanding how the electric motor and the gasoline engine work together and adapting driving habits. You can explore S90 MPG across all years to compare various models.

How it compares

The S90 T8 is in a segment with other plug-in hybrid luxury sedans. The BMW 530e xDrive, for example, offers a combined 27 MPG and emphasizes sporty driving dynamics. The Mercedes-Benz E350e (discontinued after 2018) offered similar plug-in hybrid capabilities. The Lexus ES 300h, while not a plug-in hybrid, achieves a combined 44 MPG with its traditional hybrid system, as a benchmark for fuel efficiency in the segment. These comparisons highlight the S90 T8’s blend of luxury, performance, and partial electrification, making it good for buyers who want to reduce their fuel costs without sacrificing the features and refinement expected of a premium sedan. While the Lexus boasts superior MPG, the S90 offers a different brand of luxury and the benefit of plugging in at home.

Tips to maximize efficiency

Use the “Pure” driving mode. This setting prioritizes electric driving and is ideal for short commutes and city driving.

Maximize regenerative braking by anticipating stops and gently lifting off the accelerator. This helps recharge the battery and reduces wear on the brake pads.

Regularly charge the battery. Plugging in whenever possible will allow you to maximize the electric motor and minimize gasoline consumption. A full charge overnight will reduce your reliance on the gasoline engine during daily commutes.

Monitor the energy display on the infotainment screen. This provides real-time feedback on your driving habits and energy consumption. Adjust your driving style to optimize efficiency based on the information displayed.

Maintain proper tire pressure. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended levels.

Avoid aggressive acceleration and braking. Smooth driving is the key to maximizing fuel economy in any vehicle, especially in a hybrid. Treat the accelerator pedal with respect and let the powertrain work efficiently.