29 MPG combined isn’t going to win any hypermiling awards, but for the 2015 Subaru Legacy AWD 2.5L, it’s a decent compromise. Buyers don’t choose this vehicle primarily to save fuel. They prioritize all-weather traction, reliability, and Subaru’s distinctive driving feel, and are willing to accept above-average, but not exceptional, fuel consumption.

City and highway performance

The Legacy’s EPA estimates are 26 MPG in the city and 35 MPG on the highway. The city figure is more telling. Subaru’s symmetrical all-wheel drive system, while fantastic in snow and rain, adds weight and complexity, impacting urban fuel efficiency. Stop-and-go traffic makes this worse, as the 2.5L engine works harder to overcome inertia at each green light. The highway number is more respectable. The continuously variable transmission (CVT), dubbed AV-S6 by Subaru, is excellent at maintaining optimal engine speeds when cruising, contributing to the 35 MPG rating. This makes the Legacy a decent choice for longer commutes and road trips, especially for those who frequently encounter bad weather along their routes. These numbers are a reasonable balance, the price of enjoying Subaru’s core strengths.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Subaru Legacy AWD 2.5L at $1,500. This is based on driving 15,000 miles per year, with a mix of city and highway driving, and using the national average fuel price when the estimates were calculated. This is an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you purchase, and the current gasoline prices in your area. Someone who primarily drives in congested urban areas will likely exceed this figure, while someone with mostly highway miles might spend less. The $1,500 figure is a useful benchmark when comparing the Legacy’s fuel costs to other vehicles in its class, giving context for your potential ownership expenses.

Real-world expectations

The EPA figures provide a standardized comparison, but real-world fuel economy can differ. Drivers often achieve figures close to the EPA estimates, but aggressive driving, significant altitude changes, and consistent use of air conditioning can lower your average MPG. Winter blends of gasoline often result in a slight decrease in fuel economy. Tire pressure also matters: keeping your tires properly inflated will help you get closer to the advertised MPG. Consider the EPA figures as a best-case scenario under controlled conditions. Expect some differences based on your situation.

How it compares

The 2015 Legacy’s fuel economy is roughly mid-pack within the mid-size sedan segment when equipped with all-wheel drive. A comparable 2015 Toyota Camry LE with front-wheel drive achieves 28 MPG combined, potentially saving money on gas. However, it lacks the all-weather capability of the Legacy. Even the front-wheel drive 2015 Honda Accord, known for its fuel efficiency, reaches a combined 31 MPG. The AWD Mazda 6, not offered in 2015, would have made for a good comparison. For buyers prioritizing AWD, the Legacy’s figures are respectable but not class-leading. The difference in fuel costs needs to be weighed against the benefits of Subaru’s all-wheel drive system, particularly for those living in regions with frequent snow or rain. Before deciding, review all Subaru fuel economy data to get a wider view of the brand.

Tips to maximize efficiency

Avoid aggressive acceleration. The 2.5L engine responds well to a gentle foot, and sudden bursts of speed will significantly impact fuel consumption. The CVT is designed to keep the engine in its optimal power band, so let it do its job.

Regularly check and maintain your tire pressure. Underinflated tires create more rolling resistance, forcing the engine to work harder. Refer to the sticker on the driver’s side doorjamb for the recommended tire pressure for your Legacy.

Minimize idling. Idling burns fuel without covering any distance. If you anticipate being stopped for more than a minute, turn off the engine. This is important in congested city driving where idling is more frequent.

Carefully consider roof racks and cargo carriers. These accessories create aerodynamic drag, which reduces fuel efficiency, particularly at highway speeds. Remove them when they are not in use.

Plan your routes strategically. Avoid routes with frequent stop-and-go traffic or steep hills if possible. Efficient route planning can contribute to fuel savings over time. If you own a Subaru and want to see more LEGACY MPG across all years, be sure to visit our site.