20 MPG combined isn’t going to set the world on fire, but for the 2017 Toyota Sienna AWD 3.5L 6-cyl, it’s a figure most owners accept. This minivan isn’t about setting efficiency records; it’s about hauling kids, dogs, sports equipment, and luggage in comfort and with the added security of all-wheel drive. The Sienna caters to a specific buyer: one who prioritizes practicality, reliability, and interior space above all else, understanding that those features require a trade-off at the gas pump.

City and highway performance

The EPA estimates for the 2017 Sienna AWD break down to 18 MPG in the city and 24 MPG on the highway. The city figure reflects the stop-and-go driving this minivan often faces as it shuttles families around town. The 24 MPG highway rating is achievable during longer road trips, but remember that a fully loaded Sienna, especially one battling headwinds, will likely fall short of that number. The automatic 8-speed transmission helps optimize fuel economy on the open road, but the Sienna’s weight and AWD system inevitably impact its efficiency. It’s a capable powertrain for the vehicle’s purpose, but it is showing its age in terms of efficiency when compared with newer designs.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Toyota Sienna AWD 3.5L 6-cyl at $2,200. This figure is based on driving 15,000 miles per year and using national average fuel prices. The actual cost will vary depending on individual driving habits and local fuel prices. Aggressive driving, frequent short trips, and prolonged idling will all decrease fuel economy and increase that annual expense. Watch fuel prices in your area to get a better idea of your potential real-world costs.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy can vary significantly. Factors like driving style, terrain, weather conditions, and vehicle load all play a role. Owners of the 2017 Sienna AWD often report MPG figures close to EPA estimates, assuming they are driven with reasonable care. However, those who frequently tow or live in hilly areas may see lower numbers. Regular maintenance, including tire inflation and fluid changes, is critical for maintaining optimal fuel efficiency.

How it compares

Compared to other minivans with AWD, the 2017 Toyota Sienna is in the middle of the pack. The Chrysler Pacifica, available with front-wheel drive and a hybrid powertrain, does significantly better, achieving up to 82 MPGe combined with the hybrid model and 28 MPG combined with the standard gasoline engine. The Honda Odyssey, only available as a front-wheel drive model, gets around 22 MPG combined. For those who don’t need all-wheel drive, there are more fuel-efficient minivan options. You can find all Toyota fuel economy data on our site, including historical SIENNA MPG across all years. The Sienna’s appeal lies in its combination of space, reliability, and the added assurance of AWD, a feature that commands a fuel economy premium.

Tips to maximize efficiency

Avoid aggressive acceleration and braking. The Sienna is a large vehicle, and rapid starts and stops waste fuel. Gentle and consistent acceleration can improve fuel economy, especially in city driving.

Maintain proper tire pressure. Underinflated tires increase rolling resistance, which decreases fuel efficiency. Check your tire pressure regularly and inflate them to the recommended PSI listed on the doorjamb sticker.

Minimize idling. Idling burns fuel without covering any distance. If you’re stopped for more than a minute, turn off the engine. This is especially true in colder weather, as modern engines warm up quickly while driving.

Remove unnecessary weight. Carrying extra cargo increases fuel consumption. Remove any items you don’t need from the vehicle, such as sports equipment or tools.

Consider using cruise control on the highway. Cruise control helps maintain a steady speed, which can improve fuel economy. Be mindful of terrain and traffic conditions because cruise control may not be optimal in hilly areas or stop-and-go traffic.