Tow Vecicle

I tow the 179 with a Highlander. Same 3.5 liter drivetrain as the V6 RAV. Plenty of power, but towing is really not limited by a power, its a weight issue.  My 179 weighs in at just around 3800-3900 fully loaded for boondocking. You'd be surprised how fast the weight goes up. Manufacturers include zero fluids (no water or propane) when they weigh the trailer, and no batteries. IMHO, its misleading.

So, consider how you will be using your pod.  Will you be camping only with hookups so no need to carry water or larger batteries? Or will you be doing a lot of boondocking and need to tow with a full water tank and dual batteries and lots of supplies? The water and batteries alone would add over 400 lbs to the pod's empty weight. Also consider how much weight will be in the RAV itself and take a look at your gross combined vehicle weight rating to be sure that's not exceeded. 

The Highlander has a 5000lb tow rating, 550 on the tongue, and I run a weight distribution hitch and antisway system. The wd hitch is needed, I wouldn't tow without it.  The Highlander isn't overloaded, but I personally wouldn't consider anything lighter to tow a 179. 

Can you tow a 179 with a RAV4 without exceeding its ratings? Yes, if you go out light and are very careful about loading. Would it be a fun experience and give you versatility in how you use your new pod? Probably not...