The 2018 Honda Insight is equipped with a fuel tank of 11.9 gallons (45 liters) in its US-market configuration.
This capacity figure is central to understanding how far the hybrid sedan can travel between fill-ups, especially given its efficiency-focused design. The specification shown here applies to the primary US-spec trims for the 2018 Insight; other markets may list slightly different capacities. The following details outline what this capacity means for range and overall efficiency.
Capacity and efficiency at a glance
US-market capacity and trim coverage
In the United States, the 2018 Insight’s fuel tank is 11.9 gallons (45 L), a figure that aligns with its emphasis on high fuel economy while still offering practical driving range across trims such as LX and EX.
Key numbers you need to know about the 2018 Insight's fuel system and performance are listed below.
- Fuel tank capacity: 11.9 gallons (45 liters)
- EPA fuel economy (city/highway/combined): 55 / 49 / 52 mpg
- Estimated driving range on a full tank: about 620 miles (based on 52 mpg combined)
Note that mpg and range can vary by trim, wheel size, and driving conditions. Real-world results typically align with EPA estimates but can differ with aggressive driving or frequent short trips.
What this means for driving and planning
The relatively large efficiency target of the Insight means that a 11.9-gallon tank often translates into long-range driving between fill-ups, especially on highway routes where hybrids tend to excel. Drivers planning road trips can anticipate fewer stops for fuel compared with some larger gasoline-only sedans, provided driving efficiency is maintained.
Summary
The 2018 Honda Insight carries a 11.9-gallon fuel tank, which, when paired with its strong hybrid efficiency (EPA around 52 mpg combined), yields an estimated driving range near 620 miles on a full tank under typical conditions. This combination supports long-distance cruising with fewer refueling stops, though actual range will vary with driving style, terrain, and climate. Always consult your owner's manual or local dealer for precise specs in your market and trim.