The 2018 Volvo S90’s 27 MPG combined rating is a compromise. It’s what buyers accept for the S90’s distinctive Swedish design, its quiet interior, and its advanced safety features. Fuel efficiency isn’t the *primary* reason for choosing this luxury sedan, but it’s good enough for most potential owners.

City and highway performance

The EPA estimates the 2018 S90 FWD with the 2.0L 4-cylinder engine will achieve 24 MPG in the city and 34 MPG on the highway. The 10 MPG difference suggests that the S90 performs best on longer journeys. The 8-speed automatic transmission helps maximize efficiency at higher speeds, keeping the engine within its most economical rev range. In stop-and-go traffic, the lack of a hybrid system or cylinder deactivation technology means fuel consumption will rise.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Volvo S90 FWD 2.0L 4-cyl at $2,150. This is based on driving 15,000 miles per year, using the national average fuel price at the time of testing. Actual fuel costs can vary depending on driving habits, local fuel prices, and the type of fuel used. The S90 requires premium gasoline, which can increase ownership costs. Consult all Volvo fuel economy data to compare across the brand.

Real-world expectations

EPA figures are standardized, but real-world MPG often varies. Drivers who accelerate quickly or drive in heavy city traffic should expect fuel economy closer to the city rating. However, those who primarily commute on the highway and drive smoothly may see results exceeding the EPA’s 34 MPG estimate. Managing your driving habits is key to maximizing fuel efficiency in the S90. Tire pressure and vehicle maintenance also matter.

How it compares

The 2018 Volvo S90’s fuel economy is similar to its competitors. For example, the BMW 530i (FWD) from the same year gets about 27 MPG combined. The Mercedes-Benz E300 (FWD) also has a 24 city / 34 highway rating. A few vehicles, like the Lexus ES 350 at 26 MPG combined, might offer slightly better efficiency, but the differences are often small. Buyers in this segment often prioritize features, design, and brand reputation over fuel economy. Understanding the S90 MPG across all years shows a consistent focus on efficiency.

Tips to maximize efficiency

The S90’s 8-speed automatic transmission is programmed for efficiency. Let it shift by avoiding hard acceleration and braking. Smooth inputs will allow the transmission to shift into higher gears sooner, keeping the engine efficient. Use cruise control on the highway to maintain a consistent speed and reduce fuel consumption.

Make sure your S90’s tires are inflated to the recommended pressure, usually on a sticker inside the driver’s side doorjamb. Low tire pressure increases rolling resistance, hurting fuel economy. Check tire pressure often, especially when the temperature changes.

Remove extra weight from your S90. Heavy items in the trunk or backseat add to the vehicle’s load, making the engine work harder and burn more fuel. Remove unnecessary items to improve fuel efficiency. This is important for PHEV owners who want to maximize their electric range.

Consider using the S90’s “Eco” drive mode, if available. This mode adjusts the throttle, transmission, and climate control to prioritize fuel efficiency. It might slightly reduce performance, but it can save fuel, especially in city driving.

Regular maintenance is important for good fuel economy. Get timely oil changes, air filter replacements, and other services. A well-maintained engine runs better and uses less fuel than one that is neglected. Follow the manufacturer’s maintenance schedule to keep your S90 running smoothly.