21 MPG combined is what you’ll likely get if you buy a 2021 Subaru WRX with the 2.0L engine and automatic transmission. This car isn’t pretending to be a fuel sipper, and its buyers aren’t looking for one. They want turbocharged thrills, rally-inspired handling, and all-weather confidence. Fuel economy is simply a price you pay for the performance and unique character the WRX delivers.

City and highway performance

The EPA estimates 18 MPG in the city and 24 MPG on the highway for this WRX configuration. The city figure reflects the engine’s tendency to burn more gas under stop-and-go conditions, made worse by the automatic transmission’s tendency to hold lower gears for quicker response. Highway mileage is respectable, but only if you resist the urge to fully use the turbocharger. Maintaining a steady cruise at legal speeds will get you numbers close to the EPA estimate. However, spirited driving will quickly reduce those figures. Understanding your driving patterns is important in predicting your real-world fuel consumption.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2021 Subaru WRX 2.0L automatic at $2,750. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving, and using the national average fuel price. Your actual costs will vary depending on how many miles you drive, where you drive (city vs. highway), and your local fuel prices. This annual fuel cost is a significant expense to factor in, especially compared to more fuel-efficient vehicles. If you do less than 15,000 miles a year, you will save money. If you drive over 15,000 miles or if your local fuel prices are above the national average, you will likely spend more than $2,750 per year.

Real-world expectations

While the EPA provides a standardized estimate, real-world fuel economy often differs. WRX owners report averaging around 19-22 MPG in combined driving, depending on driving style and conditions. Aggressive acceleration, frequent short trips, and hilly terrain will lower fuel economy, while conservative driving on flat highways can improve it. Pay attention to your own driving habits to get a better estimate of what you might expect. Also keep in mind your fuel quality. Premium fuel is highly recommended to keep this smaller engine running efficiently over the long haul.

How it compares

Compared to its competitors, the 2021 WRX 2.0L automatic’s fuel economy sits squarely in the middle. The Honda Civic Si, though no longer in production for the 2021 model year, typically achieves around 30 MPG combined, making it considerably more efficient. On the other hand, a similarly priced Ford Mustang EcoBoost with the automatic transmission delivers around 25 MPG combined. Even the VW Golf GTI, which offers a similar blend of practicality and performance, can see around 28 MPG combined. The WRX sacrifices some fuel efficiency in favor of its standard all-wheel drive system and distinct driving feel. For buyers who prioritize all-weather capability or the signature Subaru driving experience, the trade-off may be worthwhile. Explore all Subaru fuel economy data to see how the WRX stacks up against other models in the lineup. You can compare WRX MPG across all years as well.

Tips to maximize efficiency

Resist the urge to constantly engage the turbocharger. The WRX’s performance is addictive, but frequent hard acceleration drastically reduces fuel economy. Practice smooth acceleration and maintain a steady speed whenever possible. Anticipate traffic and avoid unnecessary braking to conserve momentum and fuel.

Check your tire pressure regularly. Underinflated tires increase rolling resistance, which lowers fuel economy. Maintaining the recommended tire pressure ensures optimal fuel efficiency and prolongs tire life. Because this Subaru also has AWD, it’s also a good idea to make sure that all tires are properly inflated to minimize driveline wear.

Minimize idling. Letting your engine idle for extended periods consumes fuel without contributing to mileage. Turn off the engine if you’re stopped for more than a minute or two. This is particularly relevant in colder climates where drivers may be tempted to warm up the engine for an excessive amount of time.

Reduce unnecessary weight. Carrying excessive cargo in your vehicle impacts fuel economy. Remove any items you don’t need to lighten the load and improve fuel consumption. Empty the trunk and remove your roof rack/cargo carrier if not in use. Keep your fluids topped off as well. Regular maintenance is key to keeping any car efficient over the long haul.