28 MPG combined is a respectable figure for the 2018 Subaru Forester AWD 2.5L 4-cyl, but practicality, reliability, all-weather capability, and a spacious interior are the reasons buyers choose this compact SUV. Forester customers understand that the standard all-wheel-drive system, a core component of the Subaru DNA, causes a slight decrease in fuel efficiency, and they accept that in exchange for the confidence it provides.

City and highway performance

The EPA estimates that this specific Forester configuration with its 2.5L naturally aspirated four-cylinder engine and automatic (AV-S6) transmission achieves 26 MPG in the city and 32 MPG on the highway. The city number is particularly relevant for Forester owners, as many use their vehicles for daily commutes and errand runs in urban or suburban environments. The highway figure allows for comfortable and relatively efficient longer trips, especially when loaded with passengers and cargo for weekend adventures. While not class-leading, these numbers reflect a compromise between efficiency and the capability expected of a Subaru.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Subaru Forester AWD 2.5L 4-cyl at $1,550 per year. This figure is based on driving 15,000 miles annually and using the national average fuel price at the time of calculation. Individual costs will vary based on driving habits, local fuel prices, and the actual number of miles driven, but $1,550 provides a useful benchmark for comparison.

Real-world expectations

While the EPA provides standardized testing figures, real-world MPG can vary significantly. Aggressive driving, frequent short trips, carrying heavy loads, and using accessories like roof racks can reduce fuel economy. Gentle acceleration, consistent highway speeds, and proper tire inflation can help achieve or even exceed the EPA estimates. Forester owners report a wide range of experiences, but most find that the EPA numbers are a reasonable reflection of their everyday driving, with minor adjustments based on their personal habits.

How it compares

The Forester’s fuel economy is generally competitive within its class, but some rivals offer slightly better numbers, especially in front-wheel-drive configurations. For example, a comparable Honda CR-V with front-wheel drive might achieve around 28 MPG combined, while a Toyota RAV4 Hybrid could surpass 40 MPG. The Forester comes standard with all-wheel drive, which is often an added-cost option on competitors.

For those prioritizing all-weather traction, the Forester’s 28 MPG then becomes more appealing when viewed against all-wheel-drive versions of the competition. Buyers often cross-shop the Mazda CX-5, which delivers similar MPG to the Forester, but offers a different driving experience. Those focused solely on MPG might want to review all Subaru fuel economy data, keeping in mind that the presence of standard AWD across the lineup often sacrifices some efficiency in the name of capability. You can also review FORESTER MPG across all years to see how efficiency changed over time.

Tips to maximize efficiency

One key to improving fuel economy in the 2018 Forester is smooth acceleration. The 2.5L engine responds best to a gentle foot, avoiding sudden bursts of throttle that force the engine to work harder and consume more fuel. Anticipate traffic flow and coast when possible to minimize the need for braking and re-acceleration.

Proper tire inflation is critical not only for safety but also for maximizing fuel efficiency. Check your tire pressure regularly, at least once a month, and ensure it matches the recommended levels on the sticker located on the driver’s side doorjamb. Underinflated tires create more rolling resistance, which can significantly reduce MPG.

Minimize the use of accessories that create aerodynamic drag. Roof racks, cargo carriers, and even open windows at highway speeds increase wind resistance, forcing the engine to work harder and consume more fuel. Remove roof racks when not needed and use air conditioning instead of open windows at higher speeds.

Regular maintenance is essential for optimal fuel economy. Following the manufacturer’s recommended service schedule, including oil changes, air filter replacements, and spark plug replacements, ensures that the engine is running efficiently and consuming fuel optimally. A well-maintained engine is a fuel-efficient engine.