The 2016 Subaru Legacy AWD 3.6L gets 23 MPG combined. This figure won’t win any efficiency awards, but consider what the Legacy offers: standard all-wheel drive, a naturally aspirated six-cylinder engine delivering smooth power, and a reputation for reliability. This isn’t a car for hypermilers; it’s a practical, comfortable sedan for drivers who prioritize all-weather confidence and some extra power over squeezing every last mile from a gallon.

City and highway performance

The EPA estimates for the 2016 Legacy 3.6R are 20 MPG in the city and 28 MPG on the highway. The city MPG reflects the penalty of its all-wheel drive system always being engaged, plus the engine uses more fuel in stop-and-go traffic. The relatively conservative 28 MPG highway figure suggests that aerodynamic efficiency isn’t a strong suit. A taller, less aerodynamic SUV like the Subaru Outback posts nearly identical highway MPG and the 6-cylinder is not the most fuel efficient in that type of scenario.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2016 Subaru Legacy 3.6R at $1,900. This figure is based on driving 15,000 miles per year, with a mix of city and highway driving, using the national average fuel price for regular gasoline at the time of calculation. It’s a useful benchmark for comparing running costs across different vehicles, but keep in mind that your actual expenses will vary depending on your driving habits and local fuel prices. If you do mostly city driving or live in an area with high gas prices, you can expect to pay more than $1,900 per year.

Real-world expectations

While the EPA estimates provide a standardized benchmark, real-world MPG often differs. Owners of the 2016 Legacy 3.6R typically report figures close to the EPA estimates, though some see slightly lower numbers in predominantly urban environments. Aggressive driving, frequent short trips, and carrying heavy loads will all negatively impact fuel economy. Gentle acceleration and consistent highway speeds can help achieve the EPA figures or even slightly exceed them. Remember that winter conditions will almost certainly reduce MPG in everyday driving.

How it compares

Compared to other mid-size sedans with available V6 engines from 2016, the Legacy 3.6R’s fuel economy is generally on the lower end. The front-wheel drive Toyota Camry V6, for example, achieved approximately 21 MPG city/30 MPG highway. In contrast, the AWD Nissan Murano, which offers similar interior space and more utility, posted 21 MPG city and 28 MPG highway. Buyers weighing these vehicles are making a conscious trade-off; they’re choosing the Legacy’s standard AWD for its superior all-weather traction, even though it comes at the expense of slightly lower fuel efficiency. For those more concerned about fuel consumption, the 2016 Legacy 2.5i with its four-cylinder engine offered far better fuel economy, approximately 26 MPG combined. All all Subaru fuel economy data backs this up, and so does every year of LEGACY MPG across all years.

Tips to maximize efficiency

Ensure your Legacy’s tires are properly inflated to the recommended pressure listed on the driver’s side doorjamb. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. This is especially important for AWD vehicles, where all four tires are connected and any imbalance can significantly affect fuel efficiency.

Avoid aggressive acceleration and hard braking. The Legacy 3.6L delivers plenty of torque, so use it carefully. Gentle acceleration and anticipating traffic flow will minimize fuel consumption. The Legacy also has an “Intelligent” drive mode that can make it easier to drive smoothly.

Minimize idling time. If you’re stopped for more than a minute or two, turn off the engine. Modern engines, including the Legacy’s 3.6L, are designed to restart quickly and efficiently without causing excessive wear. Also, don’t remote start the car “to warm it up” for more than a minute or two.

Regular maintenance is critical for optimal fuel economy. Ensure that the engine air filter is clean, and follow the recommended maintenance schedule for oil changes and tune-ups. A well-maintained engine runs more efficiently and consumes less fuel. Also, be sure that the AWD components are properly lubricated.

Consider using cruise control on the highway. Maintaining a consistent speed reduces unnecessary acceleration and deceleration, which can improve fuel economy. Experiment to find the optimal speed for your driving conditions. With a smooth highway, it’s usually beneficial to set cruise above 60 mph, but below 70 mph.