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 Mitsubishi Eclipse to the dealership as the Matrix.
The Toyota Matrix won't tax your gasoline budget significantly more than the Mitsubishi Eclipse will.
The Toyota Matrix is considerably less expensive than the Mitsubishi Eclipse in terms of MSRP.
Utility
The Toyota will most certainly prove more convenient than the Mitsubishi for those of you with frequent child-cargo.
Convenience
The Toyota Matrix's fuel tank will need to be replenished more often than the unit in the Mitsubishi Eclipse.
Comfort
Taller drivers will significantly enjoy the extra head room in the Toyota Matrix's front cabin compared to the Mitsubishi Eclipse.
The Toyota Matrix provides more head- and leg-room to your passengers than the Eclipse does.
Dimensions
The Mitsubishi Eclipse is tremendously heavier than the Toyota.
Your wallet will hurt more every time you fill up the Mitsubishi Eclipse than the Toyota because of its larger tank.
The Toyota Matrix and the Mitsubishi Eclipse compete for the same parking spaces.
Handling
With its tighter turning radius, the Toyota is quite certainly more maneuverable than the Mitsubishi Eclipse, something to consider if you do a lot of city driving; on the other hand, remember that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
The Mitsubishi Eclipse has a more sizeable engine than the Toyota Matrix. Bear in mind that smaller engines typically get better gas mileage, but a smaller engine usually has to work a little harder.
Torque equals pickup, and the Mitsubishi Eclipse will have picked up and gone by the time the Toyota Matrix finally gets moving.
The Mitsubishi Eclipse packs quite a punch compared to the Toyota Matrix as far as torque, which is the force that lets you accelerate quickly.
Warranty
The basic after-sale protection that comes with the Toyota Matrix isn't quite as generous as the Eclipse's.