| Engine | 3.5L 6-cyl |
| Transmission | Automatic (S8) |
| Drive | Front-Wheel Drive |
| Fuel Type | Regular Gasoline |
| Vehicle Class | Minivan - 2WD |
| Engine Desc | SIDI & PFI |
| Start-Stop | No |
| EPA Vehicle ID | 37996 |
The 2017 Toyota Sienna 2WD 3.5L 6-cylinder’s 22 MPG combined rating won’t top any charts. But minivans are about moving people and cargo with comfort and reliability, and fuel economy is a secondary consideration.
City and highway performance
Expect around 19 MPG in the city and 27 MPG on the highway, according to EPA estimates. City driving will likely result in lower MPG due to frequent stops, especially when the Sienna is full. The 3.5L V6 engine provides plenty of power for merging and passing on the highway, and the smooth 8-speed automatic transmission helps to optimize fuel economy at cruising speeds. You can likely achieve 27 MPG on the highway with consistent driving, even when fully loaded.
Annual fuel cost
The EPA estimates the annual fuel cost for the 2017 Toyota Sienna 2WD 3.5L 6-cylinder at $2,000 per year. This is based on 15,000 miles per year and national average fuel prices. Your actual fuel costs will depend on your driving habits, fuel type, and location. Families who drive more than 15,000 miles per year will see proportionally higher annual fuel bills, which is something to consider when budgeting for ownership.
Real-world expectations
The EPA estimates provide a baseline, but actual fuel economy varies. Some owners report slightly lower MPG than the EPA estimates, especially in mixed driving. Driving style, tire pressure, and vehicle maintenance all affect fuel economy. Aggressive acceleration, neglected maintenance, and incorrect tire pressure will decrease your Sienna’s MPG. Track your fuel economy to get an accurate picture of your monthly fuel expenses.
How it compares
When new, the 2017 Sienna’s fuel economy was typical for minivans. The Chrysler Pacifica had slightly better numbers, around 22 MPG combined. The Honda Odyssey, a common competitor, was rated similarly to the Sienna, around 19 MPG city and 28 MPG highway. Sienna buyers generally prioritize reliability, spaciousness, and Toyota’s reputation. The Sienna does hold its own against competitors in fuel efficiency.
Tips to maximize efficiency
Smooth acceleration and braking are important in a heavier vehicle like the Sienna. Anticipate stops and avoid sudden bursts of speed to save fuel. The engine delivers consistent power, so you don’t need to aggressively push the pedal.
Keep your tires inflated to the recommended pressure. Underinflated tires increase rolling resistance and reduce fuel economy. Check your tire pressure regularly, especially with temperature changes, to maintain optimal efficiency. See the sticker on the driver’s side doorjamb for the correct pressure.
Minimize idling. Turn off the engine if you’re stopped for more than a minute or two. Modern engines restart quickly, and idling wastes fuel. This is relevant during activities like waiting at soccer practice.
Remove unnecessary weight. Extra cargo in the trunk or on the roof rack increases the vehicle’s load and reduces fuel economy. Only carry what you need. Many Siennas carry a lot of stuff, so decluttering can save you fuel.
Maintain your vehicle. A well-maintained engine runs more efficiently. Follow the recommended maintenance schedule for oil changes, air filter replacements, and spark plug replacement. You can see all Toyota fuel economy data on this site, as well as SIENNA MPG across all years.