Auxiliary fuel tank vs jerry can for a motorcycle trip comes down to convenience versus ycost. An aux tank bolts in and feeds the engine through its own petcock line so you get extra range with zero stops.
A jerry can costs less but it rides high on the back and still needs pouring in by hand.
Auxiliary Fuel Tank vs Jerry Can Motorcycle: Key Differences at a Glance
Same job. Different execution. Both the auxiliary fuel tank and the jerry can add range, but they get fuel to the engine in very different ways. Here's how they compare on capacity, refueling and handling.
Auxiliary tank vs jerry can, side by side:
| What Matters | Auxiliary Tank | Jerry Can |
|---|---|---|
| Capacity added | 1 to 3 gallons (4 to 12 L), bolted to the frame or rear subframe | 1 to 2.5 gallons (4 to 10 L) in bike rated containers; a full 20 L (5.3 gal) NATO can is too heavy for two wheels |
| Getting fuel to the engine | Flows through its own petcock line into the main tank, no stopping | Poured in by hand at a stop, funnel needed |
| Weight and handling | Mounts low and centered, barely shifts balance | Straps high on a rack or panniers, raises the center of gravity |
Which One Should You Choose
Not a universal answer. It depends on how you ride and where.
Choose an Auxiliary Tank if…
- You're covering long, fixed distance routes with known gaps between stations.
- You want the extra fuel low and centered instead of stacked on the back.
- You're fine paying more upfront for a one time, permanent install.
Choose a Jerry Can if…
- You need occasional emergency backup not constant extra range.
- You want to add or remove capacity without touching the fuel system.
- Budget matters more than convenience and you don't mind stopping to pour.
📝 Note: In the U.S., gasoline carried off the pump needs an approved container built for flammable liquids (OSHA, 1996). That means one rated for 5 gallons or less with a self closing lid and pressure relief not a generic plastic jug.
Bottom Line
An auxiliary tank sits low, feeds the engine through its own line and needs zero stops which is why it wins for planned long distance riding. A jerry can still earns a spot as backup fuel but skip the full 20 liter NATO version.
Weighed side by side, an auxiliary fuel tank vs jerry can for a motorcycle comes down to one thing: planned range versus emergency backup.
Once you've picked a tank or a can the real question is how many extra miles you actually need before the next station. This motorcycle trip fuel calculator maps your bike's exact range and total fuel cost so you can size the setup before you leave. Calculate Your Motorcycle Fuel Range and Cost
Other Common Motorcycle Fuel Questions: How to Plan Fuel Stops on a Motorcycle Road Trip (5 Steps)
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