19 MPG combined is the reality for owners of the 2018 Subaru WRX with the 2.5L engine and manual transmission. Nobody buys this specific configuration of the WRX to save money at the pump. They buy it for the raw, unadulterated driving experience, the turbo lag, the precise (if somewhat notchy) 6-speed, and the rally-bred feel that permeates the entire car. Fuel economy is simply the price of admission to that world.

City and highway performance

The EPA estimates of 17 MPG in the city and 22 MPG on the highway reflect the WRX’s character. The city number suffers because the turbocharged engine is thirstier during stop-and-go traffic and aggressive launches from traffic lights. The highway number, while still modest, benefits from the ability to cruise in 6th gear, but that temptation to drop a gear for a quick overtake will quickly impact your range. Those who spend most of their time commuting in congested areas will likely see figures closer to the 17 MPG city rating, while those who frequently embark on longer highway drives might approach (or even slightly exceed) the 22 MPG estimate. Many factors can affect those numbers; tire pressure, driving style, and weather conditions can change your fuel economy drastically.

Annual fuel cost

The EPA estimates an annual fuel cost of $3,050 for the 2018 Subaru WRX 2.5L. This figure is based on driving 15,000 miles per year and using the national average fuel price when the data was calculated. Keep in mind that premium fuel is highly recommend. As fuel prices fluctuate, this number can easily rise or fall. For those who drive significantly more or less than 15,000 miles annually, or use different grades of fuel, the actual cost will vary accordingly. However, consider this a useful benchmark demonstrating the cost of enjoying that turbocharger.

Real-world expectations

Real-world fuel economy for the 2018 WRX 2.5L is highly variable. Aggressive driving will plummet your MPG into the low teens, while a conscious effort to drive reasonably can yield results closer to the EPA estimates. Factors such as elevation, terrain, and even the specific blend of gasoline available in your region can also play a role. Enthusiast forums dedicated to the WRX are filled with anecdotes ranging from despair over single-digit MPG during track days to pleasant surprises when cautiously cruising on long road trips. This is a car that rewards (or punishes) based on driver input. Owners who track their mileage diligently report wildly varying numbers, reinforcing the idea that the WRX’s fuel consumption is directly tied to driving style.

How it compares

Compared to other performance-oriented vehicles in its class, the 2018 WRX’s fuel economy isn’t exactly stellar. For example, the Volkswagen GTI, renowned for its blend of practicality and performance, achieves around 28 MPG combined in manual guise. Even the Honda Civic Si, another popular choice, boasts figures closer to 30 MPG on the highway. Looking at other all-wheel-drive options, the Audi S3, positioned as a more premium competitor, manages around 25 MPG combined. These differences matter to budget-conscious buyers, or those who would prefer to make fewer trips to the pump. The WRX offers standard AWD, something missing from both the GTI and Civic Si, so it’s a good choice for those living in colder climates. If you are interested in WRX MPG across all years, you will see similar performance estimates.

Tips to maximize efficiency

Avoid aggressive acceleration. The turbocharger is the WRX’s greatest asset but also its biggest fuel economy liability. Gentle acceleration, especially from a standstill, keeps the turbo from spooling up unnecessarily and guzzling fuel. Shift smoothly and early, anticipating traffic flow to minimize the need for sudden bursts of power.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly (at least once a month) and inflate them to the recommended pressure listed on the driver’s side doorjamb. A simple tire pressure monitoring system can also help alert you to low tire pressure.

Reduce unnecessary weight. Carrying extra cargo in the trunk or backseat adds weight to the vehicle, reducing fuel efficiency. Remove any items you don’t need on a regular basis, such as sports equipment, tools, or heavy boxes. Even a few extra pounds can make a difference over time.

Plan your routes strategically. Avoiding stop-and-go traffic and choosing routes with consistent speeds can significantly improve fuel economy. Use traffic apps or navigation systems to identify congested areas and find alternative routes. Those who live in flatter areas will tend to get better fuel economy, and winter weather also affects your fuel economy. This all holds true when reviewing all Subaru fuel economy data.

Consider a less aggressive tune. While the 2.5L WRX is a popular target for aftermarket modifications, understand that many performance-enhancing mods will negatively impact fuel economy. If you are considering an ECU tune, investigate options that balance power gains with reasonable fuel consumption.