30 MPG combined isn’t going to win any hypermiling contests, but for the 2020 Subaru Impreza Sport 5-Door, it’s a calculated compromise. This isn’t a car bought by those solely focused on squeezing every last mile from a gallon; instead, it appeals to those who prioritize all-weather capability and practicality in a compact hatchback, willing to trade optimal fuel efficiency for those benefits.

City and highway performance

The EPA estimates the 2020 Impreza Sport 5-Door at 27 MPG in the city and 35 MPG on the highway. The city figure is respectable for a non-hybrid compact, reflecting the engine’s responsiveness in stop-and-go traffic. However, the highway MPG is where the Impreza lags slightly behind some front-wheel-drive competitors because of Subaru’s standard symmetrical all-wheel drive system, which adds weight and driveline friction.

While some might see this difference as a hindrance, Impreza buyers are often less affected. The security and capability the AWD offers in inclement weather and on less-than-perfect roads often justify the slight dip in highway fuel efficiency.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2020 Subaru Impreza Sport 5-Door is estimated at $1,450. This figure is based on driving 15,000 miles per year and using national average fuel prices. Higher gas prices, or exceeding the annual mileage, can significantly increase this cost. The EPA uses a specific formula to calculate this figure to allow buyers to compare data when they’re looking at fuel economy on different vehicles.

Real-world expectations

While the EPA estimates provide a solid baseline, real-world fuel economy can vary. Driving style, terrain, weather conditions, and even tire pressure can affect MPG. Expect to see figures slightly below the EPA estimates if you frequently drive aggressively, live in mountainous areas, or spend most of your time in stop-and-go traffic. Conversely, those who prioritize smooth acceleration and consistent highway speeds might achieve or even exceed the EPA’s numbers. The best way to gauge real-world MPG is to track fuel consumption over several weeks of typical driving using the trip computer.

How it compares

The Impreza’s 30 MPG combined rating puts it in contention with a range of other compact cars, though its AWD system inherently puts it at a slight disadvantage in pure fuel economy against FWD rivals. A Honda Civic Hatchback with the CVT automatic nets 31 MPG Combined EPA. A Nissan Sentra with the CVT automatic obtains 33 MPG Combined EPA, but neither can offer the same level of confidence in varied road conditions. The Toyota Corolla Hatchback manages close to 35 MPG combined in SE trim with the automatic, but also lacks AWD.

For the Impreza buyer, there’s a trade-off between outright MPG and the confidence and safety of all-wheel drive. Those considering the Impreza should weigh these factors carefully.

Tips to maximize efficiency

Even with its inherent AWD inefficiency, there are steps Impreza Sport 5-Door owners can take to maximize fuel economy. Gentle acceleration will make a noticeable difference because the 2.0L engine can quickly burn extra fuel when pushed hard. Anticipate traffic flow and avoid abrupt braking, instead allowing the car to coast whenever possible.

Proper tire inflation is important. Check the tire pressure regularly, especially during significant temperature changes, and inflate the tires to the recommended pressure listed on the doorjamb sticker. Underinflated tires increase rolling resistance, reducing fuel economy.

Reduce unnecessary weight. Extra cargo in the trunk or on the roof rack increases the car’s load, forcing the engine to work harder and burn more fuel. Remove any items you don’t regularly need.

Consider the type of driving you do most often. If the all-wheel-drive system isn’t needed for your daily commute, evaluate if it’s worth the MPG hit. For some, the safety and peace of mind it provides is worth it, while others would prefer the higher numbers associated with a front-wheel-drive car. If you want another Subaru, review all Subaru fuel economy data to see what other models might fit the bill.