2015 Toyota Sienna MPG and Fuel Cost
The 2015 Toyota Sienna is rated 19 to 21 mpg combined across 2 EPA-tested gas versions; the best is the 3.5L 6-cyl · FWD · 6-speed automatic.
EPA fuel economy
2015 Toyota Sienna · 2 EPA-tested versionsBest EPA rating
21MPG combined
18 city 25 highway
$3,200 a year to fuel
3.5L 6-cyl · FWD · 6-speed automatic
Best version costs $4,000 more in fuel over 5 years vs the average new vehicle (EPA)
Fuel cost: 15,000 miles a year at EPA's $4.47 a gallon (regular gas).
At EPA's price assumptions, fuel costs $3,200 to $3,550 a year. Ratings for the best versions are unchanged from 2014.
More complaints than most Sienna years
The 2015 drew 103 owner complaints in its first three years, against about 52 for a typical Sienna year: 1.9 times as many. It is not a year to avoid, which takes at least twice the typical count and at least 50 complaints.
Years to avoid: 2011; best years: 2018 and 2019. Based on owner complaints, not adjusted for sales.
Every Sienna year rankedThe 2015 Sienna's recalls and problems
Every 2015 Sienna version
EPA's ratings for each version it tested. Fuel cost is EPA's estimate for 15,000 miles a year at its current prices.
| Version | Combined | City / Hwy | Fuel / year |
|---|---|---|---|
3.5L 6-cyl · FWD · 6-speed automatic Best
EPA listing: Sienna 2WD |
21 mpg | 18 / 25 | $3,200 |
3.5L 6-cyl · AWD · 6-speed automatic
EPA listing: Sienna AWD |
19 mpg | 16 / 23 | $3,550 |
Fuel cost at your prices
EPA's annual cost uses 15,000 miles a year, 55% city driving and its current prices: $4.47 a gallon for regular gas. Change the numbers to match your driving.
| Version | Per year | 5 years |
|---|---|---|
3.5L 6-cyl · FWD · 6-speed automatic | $3,193 | $15,964 |
3.5L 6-cyl · AWD · 6-speed automatic | $3,529 | $17,645 |
At the default settings the results match EPA's annual cost before EPA rounds it to the nearest $50.
Toyota Sienna MPG by model year
The best-rated version in each model year; the highlighted year is this page. Gas: 19 to 22 mpg (2010 to 2020); highest in 2017. Hybrid: 36 mpg (2021 to 2026).
- Best gas version
- Best hybrid version
2015: gas 21 mpg · hybrid not offeredTap or drag across the chart for other years.
Show as a table
| Model year | Best gas version | Best hybrid version |
|---|---|---|
| 2010 | 19 | – |
| 2011 | 21 | – |
| 2012 | 21 | – |
| 2013 | 21 | – |
| 2014 | 21 | – |
| 2015 | 21 | – |
| 2016 | 21 | – |
| 2017 | 22 | – |
| 2018 | 22 | – |
| 2019 | 22 | – |
| 2020 | 21 | – |
| 2021 | – | 36 |
| 2022 | – | 36 |
| 2023 | – | 36 |
| 2024 | – | 36 |
| 2025 | – | 36 |
| 2026 | – | 36 |
Every Sienna year's ratings in one table
How the 2015 Sienna compares
2015 minivans covered on this site, ranked by their best combined rating. Fuel cost is for each model's cheapest version to run, at EPA's prices.
| 2015 model | Best combined | Best gas | Fuel / year |
|---|---|---|---|
Best: gas |
22 mpg | 22 mpg | $3,050 |
Toyota Sienna This page Best: gas |
21 mpg | 21 mpg | $3,200 |
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2015 Sienna recalls and complaints
Questions
Does AWD lower the 2015 Toyota Sienna's gas mileage?
Yes. On versions that differ only in drive, AWD lowers the combined rating by 2 mpg: the 3.5L 6-cyl gets 21 mpg combined with front-wheel drive and 19 with AWD.
Does the 2015 Toyota Sienna need premium gas?
No. EPA lists every 2015 Toyota Sienna version on regular gasoline.
How does the 2015 Sienna's MPG compare with the 2014?
For 2015, the best gas version is rated 21 mpg, the same as the year before.
Sources and method
- US EPA and Department of Energy fuel economy data (fueleconomy.gov), file dated Sep 29, 2026.
- EPA fuel price assumptions: regular $4.47, midgrade $5.07, premium $5.48, diesel $6.38 a gallon; electricity $0.15 per kWh.
- Recall and complaint counts: NHTSA recall file dated Oct 2, 2026 and complaint file dated Oct 2, 2026.
Ratings are EPA estimates. Real-world mileage depends on how, where and in what weather you drive. How we build these pages. Spotted an error? Tell us.