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How big is the 2018 Toyota 4Runner gas tank?

The 2018 Toyota 4Runner has a gas tank capacity of 23 gallons. This mid-size SUV is known for its off-road capabilities and rugged design, and its sizable fuel tank allows for extended adventures without frequent refueling stops.


Detailed Overview of the 2018 Toyota 4Runner's Gas Tank


The 2018 Toyota 4Runner is a popular choice for those seeking a capable and versatile SUV. One of the key features that contributes to its off-road prowess and long-distance driving potential is its generous fuel tank capacity.



  • Tank Capacity: The 2018 Toyota 4Runner has a gas tank that can hold up to 23 gallons of fuel.

  • Fuel Efficiency: With an EPA-estimated fuel economy of 17 mpg in the city and 21 mpg on the highway, the 4Runner can travel a considerable distance on a full tank of gas.

  • Range: Depending on driving conditions and your specific driving habits, the 2018 Toyota 4Runner can typically travel between 350 and 450 miles on a single tank of gas.


The 4Runner's large fuel tank capacity is particularly beneficial for those who enjoy off-road adventures or long road trips, as it reduces the frequency of refueling stops and allows for more uninterrupted time on the road or trail.


Factors Affecting Fuel Consumption


While the 2018 Toyota 4Runner's gas tank capacity is a significant advantage, it's important to note that actual fuel consumption can vary depending on several factors:



  • Driving Conditions: Driving on rough terrain, steep inclines, or at high speeds can increase fuel consumption and reduce the overall range.

  • Driving Habits: Aggressive acceleration, frequent braking, and idling can all contribute to higher fuel usage.

  • Payload and Towing: Carrying heavy loads or towing a trailer can also impact the 4Runner's fuel efficiency.


By being mindful of these factors and driving efficiently, 4Runner owners can maximize the use of the vehicle's large fuel tank and enjoy extended periods of uninterrupted driving.

What year 4Runner to stay away from?


The Toyota 4Runner years to avoid are generally 2003-2005 due to severe frame rust and engine issues, and earlier models like 1988-1995 (specifically with the 3.0L V6) due to head gasket failures. Other problematic years include 2001-2002 for rust and 2010-2011 for airbag defects. 
This video discusses the best and worst years for the Toyota 4Runner, including common problems to watch out for: 59scar PROblemsYouTube · Oct 29, 2024
Problematic model years by generation 

  • First Generation (1984-1989): Avoid 1988-1989 models with the 3.0L V6 engine due to potential head gasket failures. 
  • Second Generation (1990-1995): Avoid 1990-1995 models with the 3.0L V6 engine for the same head gasket issues. 
  • Third Generation (1996-2002): Avoid 2001-2002 models due to reports of severe frame rust and suspension problems. 
  • Fourth Generation (2003-2009): This is the most problematic generation. 
    • 2003-2005: These years are notorious for severe frame rust, and some 2003-2004 models are also associated with head gasket failure and dashboard cracks. The 2004 model is often cited as one of the worst due to a combination of rust, ABS problems, and poor rear impact safety ratings. 
  • Fifth Generation (2010-present): Avoid 2010-2011 models due to dangerous airbag defects. 

Key issues to be aware of
  • Frame and body rust: A significant problem, particularly for the 2003-2005 models, can lead to expensive repairs or a complete vehicle write-off. 
  • Engine issues: The 3.0L V6 engine in the second-generation 4Runner is prone to head gasket failure. 
  • Airbag defects: A recall affected the 2010-2011 models due to faulty airbags. 
  • Dashboard cracks: This was an ongoing issue in some models, including the 2004. 
  • Suspension and brake problems: The 2001-2002 models had suspension issues, while the 2004 had a high number of complaints about the ABS not working properly. 



How many gallons of gas does a 2018 4Runner hold?


The 2018 4Runner has a fuel tank capacity of 23 gallons across all its trim levels. This size applies to the base models like the SR5 and extends to other trims, such as the Limited.
 

  • Fuel Tank Capacity: 23 gallons
  • Trim Levels: All trim levels, including the SR5 and Limited, share this fuel tank size.



How big is the gas tank on a 4Runner?


The Toyota 4Runner has a fuel tank capacity of 23 gallons for most models, including the 5th generation (2010-2025). However, the brand new 2025+ 6th generation 4Runner has a smaller 19-gallon fuel tank. 

  • 5th Gen (2010-2025): 23 gallons
  • 6th Gen (2025+): 19 gallons



How far can a 4Runner go on a full tank?


A Toyota 4Runner can go between 250 to over 400 miles on a full tank, depending heavily on the model year, driving conditions, and modifications. Most users report getting around 300-350 miles with a mix of highway and city driving. 
Factors that influence range:

  • Driving style: Highway driving is more fuel-efficient than city driving, leading to a longer range. 
  • Vehicle modifications: Aftermarket tires, roof racks, and lifts can decrease fuel efficiency and reduce the driving range. 
  • Model year and trim: Newer models may have different fuel tank capacities and efficiency ratings, while hybrid models will have a different range compared to traditional gasoline models. 
  • Driving conditions: External factors like terrain, weather, and vehicle load can also affect mileage. 

Example ranges by driving type:
  • Highway: Drivers can sometimes achieve 350-450 miles or more, especially on newer or stock models. 
  • City: City driving typically results in a lower range, with users reporting around 230-320 miles. 
  • Mixed: A mix of both highway and city driving often results in a range between 300 and 350 miles. 


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.