How many gallons is a Subaru Ascent gas tank?
The Subaru Ascent's gas tank holds 19.3 gallons.
This capacity is the standard specification for models introduced since 2019 and remains consistent across recent years. The actual range you get per tank depends on driving conditions, your speed, and the engine/drivetrain configuration, so expect variations in real-world use.
Tank capacity and expected range
The following facts help translate the tank size into practical range.
- Fuel tank capacity: 19.3 gallons (73.1 liters).
- Estimated driving range per tank varies with fuel economy; typical combined mpg yields roughly 380–450 miles per fill, depending on conditions.
In everyday driving, this usually translates to several hundred miles per refuel, with more highway driving extending the range.
Model-year consistency and notes
Subaru has maintained the 19.3-gallon tank size across recent Ascent generations, though official mpg figures differ by year and trim.
Practical tips for planning fuel stops
For trips, consider your typical mpg and use the tank capacity as a planning baseline. Always keep fuel in reserve and monitor the gauge, since mpg can swing with weather, terrain, and load.
Summary
Answer: The Subaru Ascent uses a 19.3-gallon gas tank. Across recent model years, this standard capacity supports a practical range of several hundred miles per fill, with actual range varying by driving conditions and configuration.
What are the weaknesses of the Subaru Ascent?
Common Subaru Ascent cons include poor fuel economy, a CVT (continuously variable transmission) that can feel disconnected and noisy, and brake issues like premature wear and juddering. Other drawbacks cited by owners are limited interior cabin width, inconsistent technology and infotainment, and engine noise, particularly under acceleration. Some owners also report issues with electrical systems, and despite a decent engine, some feel it is underpowered for the vehicle's size, particularly with its CVT.
You can watch this video to learn about the common problems and weaknesses of the Subaru Ascent: 52sNexologyYouTube · Sep 11, 2025
Performance and powertrain
- Poor fuel economy: Some owners report fuel economy that is worse than advertised.
- Underpowered engine: The turbocharged 2.4-liter engine is often considered underpowered for the Ascent's heavy weight.
- Noisy CVT: The CVT can cause a "droning" noise and a disconnected feeling, while competitors use more traditional automatic transmissions.
- Inconsistent throttle: Some drivers find the throttle too touchy at low speeds or sluggish at higher speeds.
Brakes
- Premature wear: Owners report premature wearing of brake pads and rotors.
- Vibration and noise: Complaints include pulsating or vibrating brakes and squeaking noises.
Interior and technology
- Limited interior width: Despite being a large SUV, the cabin is narrower than many competitors, reducing usable space for passengers.
- Frustrating technology: Some owners find the technology and infotainment systems frustrating to use.
- Driver assist system issues: In some conditions, such as heavy rain, the EyeSight driver assist system can shut down.
Other issues
- Engine and transmission problems: In addition to the CVT, other engine and transmission-related issues have been reported by owners.
- Electrical system issues: Reports include problems with interior lights and other electrical components.
- Repairs: Some owners report that repairs for certain issues, like replacing a windshield, can be expensive and trigger other cascading problems.
This video discusses several issues with the Subaru Ascent, including the CVT, brake problems, and electrical system: 1mFuel ForceYouTube · Aug 4, 2025
Why do subarus need premium gas?
However, the engines found in the Subaru BRZ, the Subaru WRX, and the Subaru WRX STI are built for higher compression with a powerful turbocharger -- as a result, regular fuel can be problematic in these engines. Instead, premium gas is required.
How many gallons does my Subaru Ascent hold?
19.3 gallons
Subaru Ascent MPG – 19 city / 25 highway mpg* (all other trims) Subaru Ascent Fuel Tank Capacity – 19.3 gallons. Subaru Ascent Fuel Requirements – 87-octane unleaded gasoline.
Is a Subaru Ascent bigger than a Toyota Highlander?
Toyota Highlander Interior Dimensions. As mentioned above, the Subaru Ascent is larger than the Toyota Highlander, which creates a more comfortable cabin for you and your family. The model has more passenger volume, with 153.2 cubic feet available, while the Highlander only offers 141.8 cubic feet.
