You can put gas cans in the back of the Passport and there shouldn't be any problem on short trips as long as the can's cover is tight and it's not leaking. The back of the Passport has recessed cargo bins that can hold two mid size gas cans upright if you lift up the cargo liner, but Honda also offers a cargo net and cargo organizer accessories that can help keep things upright.

To help with air quality inside the car, just switch off recirculation from the A/C controls or roll down the windows during the trip.

 

Thanks. I've always had pickup trucks so this would be new to me. I was thinking along the lines of something like this and installing thick garbage bags inside to "enclose" the cans. The diesel cans are what worry me the most.

20-Gal. Professional Heavy Duty Waterproof Stackable Plastic Storage Container with Hinged Lid in Black

 

Are you already running a trailer when you are needing that fuel? If not, one of this type of thing works nice for transporting 'things' outside of the back (Various types, models and materials, even ones that 'fold up' (or a Yakima version that will cost you your first child but is secretly a Transformer ) :

Amazon.com: MaxxHaul 70107 53" x 19-1/2" Hitch Cargo Carrier - Trailer Mount Steel With High Side Rails For RV's, Trucks, SUV's, Vans, Cars 2" Receiver 500-lb Load Capacity , Black : Everything Else


If you are using a trailer for toys, no room to put the cans on the trailer? If it is a 'thin rail' only unit, a storage platform for fuel up near the neck could (possibly) be added.

Just some ideas.

 

I have (3) 2 1/2 gal. and (1) 3 gal. plastic gas cans that I fill when needed. I set them centered & side by side in the cargo area of the Passport and use a 3' long bungee cord to hold them in place. I start @ one of the rear side tie downs & then go through each can handle (wrapping each handle once) and ending @ the opposite rear side tie down. The bungee cord holds them in place without any movement.

 

Any bad odors?

 

No trailer. Just run out once in awhile to fill up the cans.

 

Roof basket 😂

 

LOL. I did spec that out for a 4Runner. Would need a Sherpa rack plus other mounts at $2500 just to haul gas cans. Ouch!

 

I have a pair of 5 gal metal gas cans - when required I place them in the rear and go. They sit steady on this intown run.
However my pair of 20 gal. propane tanks need to be steadied, I use a bungee cord (secured on each latch in the floorboard).

I don't carry any passengers, just in case.

 

I use a heavy cargo net like the one you may already have for the bed of your Ram.