18 MPG combined. If you’re considering the 2021 Subaru WRX and prioritizing fuel efficiency, you’ve probably misunderstood its purpose. This isn’t a Prius-fighter; it’s a rally-bred, turbocharged enthusiast machine with a manual transmission and a reputation for exhilarating performance. Practicality plays a role, but it’s secondary to acceleration and cornering. Owners accept the fuel economy because they value the driving experience the WRX provides.

City and highway performance

The official EPA ratings are 16 MPG in the city and 22 MPG on the highway. The city number reflects urban driving, made more noticeable by the WRX’s eagerness off the line. If you resist launching it from every red light, you might see numbers closer to the sticker. On the highway, reaching 22 MPG requires steady cruising and avoiding the boost. The 2.5L turbo thrives on boost and using it burns a lot of fuel. Highway figures also drop when you add roof racks or a loaded cargo carrier. This is a reality for many owners, since WRX drivers tend to be active.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,200 for the 2021 Subaru WRX. This estimate is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may be higher or lower depending on your driving habits, the type of fuel you use, and whether you’re prioritizing performance. Most WRX owners don’t drive conservatively, so the $3,200 estimate is a starting point.

Real-world expectations

Forget that 18 MPG sticker once you own the WRX. Expect 15-17 MPG in mixed driving. Aggressive acceleration, frequent gear changes, and spirited runs on backroads will further impact that figure. Those who drive gently during the week and aggressively on weekends will see the biggest fluctuations. The WRX encourages you to accelerate, and that costs gas.

How it compares

Compared to other performance vehicles, the WRX’s fuel economy is unexceptional. A 2021 Honda Civic Si offers 31 MPG combined with similar engagement, but less power. The Hyundai Veloster N, manages around 25 MPG combined. Even the VW GTI achieves closer to 28 MPG. Checking all Subaru fuel economy data shows a wider picture of Subaru’s lineup. WRX owners choose performance and driving feel over fuel efficiency, a tradeoff they are willing to make. A search for WRX MPG across all years shows consistent figures, meaning this is an inherent part of the WRX experience.

Tips to maximize efficiency

The most impactful change you can make is adjusting your driving style. Resist using the turbocharger. Smooth acceleration and anticipatory driving will make a difference, even though it requires control.

Ensure your WRX is properly maintained. Regular oil changes, clean air filters, and inflated tires all contribute to fuel economy. These are maintenance items, but their impact is amplified on a performance vehicle like the WRX, where engine health translates to efficiency.

Consider the fuel grade you’re using. While the WRX can run on regular unleaded fuel, it is designed to run on premium. Using lower-octane fuel can reduce performance and fuel economy, negating any cost savings. Use the recommended fuel to maintain efficiency and performance.

Reduce weight and aerodynamic drag. Remove items you don’t need from the trunk. Avoid adding accessories that increase wind resistance. Every little bit helps, although the impact is minor compared to driving style.