Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs almost the same to get the Honda Fit to the dealership as the Toyota Yaris.
The Toyota Yaris won't save you much money at the pump compared to the Honda Fit.
There frankly isn't much of a difference in gas mileage here, but if you must know, the Toyota Yaris is a little more economical than the Honda Fit.
With respect to MSRP, the Toyota Yaris costs considerably less than the Honda.
Utility
The Toyota Yaris and the Honda Fit can accommodate the same number of passengers.
Convenience
You'll likely take the Honda Fit for a fill-up approximately as often as the Toyota Yaris.
Comfort
While the front cabin in the Honda Fit offers a bit more head room than the Toyota Yaris, there frankly isn't much of a difference.
The Honda Fit is not particularly more spacious for your passengers than the Toyota Yaris.
Dimensions
The Honda Fit's tank is approximately the same size as the Toyota Yaris's, though the Toyota's is slightly larger.
The Toyota and the Fit compete for the same parking spaces.
Handling
With its tighter turning circle, the Yaris is quite certainly more maneuverable than the Honda Fit, something to consider if you do a lot of city driving; on the other hand, note that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
Torque is the force that lets you accelerate quickly, and in this respect, the Honda Fit isn't much more powerful than the Toyota.
Warranty
The Honda Fit and the Toyota Yaris have the same basic after-sale protection.