Utility
There's no clear winner between the Dodge and the Scion xB in terms of transporting cargo.
The Dodge Caliber and the xB can accommodate the same number of passengers.
Performance
In terms of horsepower, the Dodge Caliber packs quite a punch and will knock the xB down a few rungs. On the flip side, keep in mind that high horsepower engines often command higher insurance premiums.
Dimensions
The Dodge Caliber is markedly heavier than the Scion.
Your wallet will hurt more every time you fill up the Caliber than the Scion xB because of its more capacious tank.
The Caliber rides lower than the Scion xB, which is a good thing for its center of gravity and ease of access.
The xB and the Dodge Caliber compete for the same parking spaces.
Convenience
You'll quite certainly have to take the Caliber for a fill-up more often than the Scion xB because of its tank size and fuel economy.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs roughly the same to get the Dodge Caliber to the dealership as the Scion xB.
The Dodge Caliber will tax your gas budget quite a bit more than the xB will.
The Dodge Caliber pales in comparison to the Scion xB regarding gas mileage.
The Scion xB is quite a bit less costly than the Caliber when it comes to MSRP.
The Dodge Caliber will cost you a bundle in gas every year compared to the xB.
The Scion will save you a bunch of money at the pump every year compared to the Dodge Caliber.
Handling
The Dodge Caliber has quite a bit wider tires than the Scion xB. Note that wider tires might improve handling, while narrower tires might improve gas mileage.
Drivetrain
The Scion xB's engine is tremendously smaller than the Dodge's. Note that a smaller engine usually has to work a little harder; on the flip side, smaller engines are often cheaper to fix.
The Caliber packs quite a punch compared to the Scion xB regarding torque, which is roughly equivalent to acceleration.
The Scion xB could learn a lesson or two from the Caliber in terms of pickup.
Comfort
Taller drivers will substantially enjoy the extra head room in the Scion's front cabin compared to the Dodge Caliber.
The ampler interior dimensions of the Scion xB make it quite a bit more spacious for your passengers than the Dodge Caliber.
Overview
The Scion and the Dodge Caliber have the same basic warranty.