How much gas does an Acura MDX hold?
The Acura MDX typically holds about 19.5 gallons of gasoline, or roughly 74 liters, in its fuel tank. This standard capacity is common across most recent MDX generations and trims.
Tank capacity overview
Here is what you can expect from the MDX's fuel tank size across common configurations, with notes on minor variations.
Below is a quick breakdown to show what you can expect across common MDX configurations.
- 19.5 gallons (73.8 liters) — standard fuel tank for most modern MDX models, including the current generation (roughly 2014–present) and the MDX Hybrid.
- Some older markets or rare-trim variants may have slight differences; always verify with the owner's manual or dealer for your exact vehicle.
For precise capacity, consult the owner's manual or the label on the fuel-filler door, as capacity can vary slightly by model year and market.
Estimating driving range and fuel economy
Fuel range depends on the MDX's efficiency. To estimate how far you can travel on a full tank, multiply the tank capacity by the model-year's EPA combined mpg, then factor in your driving habits and conditions.
- Find your MDX's EPA combined mpg rating for your year and trim.
- Multiply 19.5 gallons by that mpg figure to estimate potential range.
- Adjust for city vs. highway driving, cargo, weather, and driving style for a realistic expectation.
Note that real-world range can differ from EPA estimates, but this method provides a practical starting point for planning refueling stops.
Notes by generation and market
In practice, the 19.5-gallon capacity is the standard for most recent Acura MDX generations, including the current (2022–present) model and MDX Hybrid. If you own an older or region-specific model, always verify through official documentation.
Where to confirm capacity
For the most accurate figure, check the owner's manual, the vehicle's door jamb sticker, or Acura's official product pages for your exact model year.
Summary
Across the modern Acura MDX lineup, the fuel tank capacity is 19.5 gallons, or about 74 liters. This figure has remained consistent for recent generations, with only minor market or trim variations. Verifying with official documentation ensures you have the precise number for your vehicle.
How many gallons of gas does an MDX hold?
18.5 gallons
2025 Acura MDX MPG Ratings By Trim
Regardless, every trim is recommended to use premium unleaded 91-octane fuel and has a fuel tank capacity of 18.5 gallons.
How far can an Acura MDX go on full tank?
475 miles
Depending on which configuration drivers select, the 2022 MDX has a driving range of more than 475 miles. Despite the MPG ratings being slightly altered by the driver's choice between SH-AWD or FWD, the numbers still look similar.
How big is an Acura MDX gas tank?
18.5 gallons
The Acura MDX has a fuel tank size of 18.5 gallons, this is larger than the average SUVs that the MDX competes against.
What happens if I put 87 in my Acura?
Possible Engine Knocking: Lower-octane fuel can cause engine knocking (a knocking sound), which can be damaging over time. Lower Fuel Efficiency: Regular gas may not burn as efficiently as premium fuel, which can cause lower miles per gallon (MPG).
