21 MPG combined might not be class-leading, but for the 2020 Subaru WRX with its 2.0L turbocharged engine and automatic transmission, it’s a figure that many owners accept. This isn’t a Prius, and it makes no such claims. The WRX is a performance-oriented sedan, designed for drivers who prioritize quick acceleration, engaging handling, and confidence from all-wheel drive in any weather, even if it means sacrificing some fuel efficiency. Buyers of the 2020 WRX rarely list fuel economy as their top priority, but it’s worth exploring what that 21 MPG really means for daily driving.

City and highway performance

The EPA estimates the 2020 WRX at 18 MPG in the city and 24 MPG on the highway. The city figure reflects stop-and-go traffic, frequent acceleration, and idling, conditions where the turbocharger is less efficient. The 24 MPG highway rating should be achievable during steady cruising, but maintaining higher speeds or making frequent passing maneuvers will quickly decrease that number. The WRX’s turbocharged engine is sensitive to driving style, and aggressive throttle inputs will demand significantly more fuel. Consider those numbers a baseline, a starting point before the fun.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2020 Subaru WRX is approximately $2,750. This is based on driving 15,000 miles per year and assumes national average fuel prices. Premium fuel is recommended for the 2.0L turbo engine, a factor in the annual fuel cost. If you drive more or less than 15,000 miles per year, your fuel expenses will change accordingly. And if gasoline prices are higher or lower than the national average in your area, your actual costs will vary.

Real-world expectations

While the EPA figures provide a standardized benchmark, real-world fuel economy often differs. WRX owners report numbers that change depending on driving style. Those who frequently trigger the turbocharger’s power and enjoy spirited driving probably see figures closer to the city rating or even lower. Drivers who prioritize fuel conservation and drive lightly may achieve numbers closer to, or even slightly above, the highway rating. Terrain is also important; hilly or mountainous roads will require more fuel than flat, open highways. Check out WRX MPG across all years to see what other owners are reporting in different conditions.

How it compares

Compared to other performance sedans, the 2020 WRX’s fuel economy is in the middle. The front-wheel-drive Honda Civic Si achieves an EPA-estimated 31 MPG combined, but the Si offers less overall performance and lacks the WRX’s standard all-wheel drive. A Volkswagen Golf GTI gets you closer to the WRX’s performance with a similar 27 MPG combined rating. The more powerful Subaru WRX STI returns significantly lower numbers, closer to 19 MPG combined. These comparisons matter because WRX buyers often consider factors beyond just fuel economy, weighing performance, handling, and all-weather capability.

Tips to maximize efficiency

Avoid aggressive acceleration. The WRX’s turbocharger delivers a burst of power, but frequent hard acceleration will significantly affect fuel economy. Instead, focus on smooth and gradual acceleration to minimize fuel use. Anticipate traffic flow and maintain a steady speed.

Use cruise control on the highway to maintain a consistent speed, which minimizes unnecessary acceleration and deceleration. This is particularly effective on long highway stretches where traffic is relatively light. Remember to disengage it when approaching hills or changing traffic conditions.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and ensure it matches the recommended pressure listed on the driver’s side door jamb. This improves fuel economy and prolongs tire life.

Excess weight in the vehicle increases fuel consumption. Remove unnecessary items from the trunk or backseat to reduce the overall load on the engine.

Service your WRX on time. Scheduled maintenance, including oil changes and air filter replacements, ensures the engine runs efficiently. A clean air filter allows for optimal airflow, while fresh oil reduces friction and improves engine performance. Keeping your WRX properly maintained helps maximize fuel economy and prevent costly repairs. You can view all Subaru fuel economy data to see how different models perform, relative to your service habits.