It's not the first place I've seen the 13.5 gas tank. I went into super data collection mode before focusing in on the Hornet. I needed something in the AWD compact/subcompact crossover department with a Max Width (with mirrors) of 82". I compared the Trailblazer, Hornet, Kona, Seltos, and CX-30. The Hornet has the largest fuel tank amongst that company.
I think the CX-5 is a few inches wider (if I remember correctly)
(ed: this was before going with the GT Plus, but these were my finalists)
I'll correct myself... the CX-5 is about a TENTH of an inch wider (per MotorTrend) Car Comparison (motortrend.com)
With mirrors, might be closer to an inch, the specs I've seen from Dodge have it at 82" mirror to mirror.