It holds 19.5 gallons of gasoline.
For the 2015 Honda Odyssey, the standard fuel tank capacity is 19.5 gallons (about 73.8 liters), a figure consistent across LX, EX, EX-L, and Touring trims. With EPA fuel economy ratings typically around 19 mpg in the city and 28 mpg on the highway, that tank translates to roughly 420–450 miles of driving range on a full tank under mixed driving conditions.
Why this matters for owners
Knowing the capacity helps with planning long trips, estimating refueling stops, and budgeting fuel costs. The Odyssey's 19.5-gallon tank is designed to balance interior space with practical range for family travel.
Practical considerations
On highways and flat terrain, you may observe fuel efficiency closer to the highway rating, while city driving or carrying passengers and cargo will lower mpg, narrowing the range. Always refuel before a long stretch where gas stations are sparse or in areas with limited service.
Summary
The 2015 Honda Odyssey holds 19.5 gallons of gasoline, providing a typical driving range of about 420–450 miles per tank depending on driving conditions and fuel economy.