Hey mazda dude. The car is much smaller than the 5, The 5 has what I like to call a greenhouse. The amount of visability from the cockpit in it is awesome. Plus cargo space is about double what the cx-3 has. Its not cramped but if 4 of us wanted to go on a weekend trip, we would need a roof rack, as there would not be enough cargo space to carry our 4 bags and the seats up. We are getting one for zipping around town, and traveling when its just the wife and I going for weekend getaways. If its anything longer, or more people we will take the 5. If there is any dirt involved Our jeep gets the nod.
The one thing I noticed is there is no arm rest and the window is too high beside the driver to comfortabley rest your arm on it too. Other than that its a blast and gets awesome milage.