Utility
The Suzuki SX4 will definitely prove more convenient than the Mitsubishi Eclipse for those of you with frequent child-cargo.
Performance
In terms of horsepower, the Mitsubishi packs quite a wallop and will knock the SX4 down a few rungs. On the flip side, bear in mind that high horsepower engines often command higher insurance premiums.
Dimensions
The Eclipse is tremendously heavier than the Suzuki SX4.
Your wallet will hurt more every time you fill up the Mitsubishi Eclipse than the Suzuki because of its larger tank.
The Suzuki and the Mitsubishi Eclipse compete for the same parking spaces.
Convenience
You will most certainly have to visit your friendly gas station more often with the Suzuki SX4 than with the Mitsubishi Eclipse.
Cost
As far as gas mileage, the Suzuki SX4 beats the Mitsubishi Eclipse.
The Eclipse won't tax your gas budget substantially more than the Suzuki SX4 will.
The Suzuki SX4 is tremendously less expensive than the Mitsubishi Eclipse regarding MSRP.
Handling
With its tighter turning circle, the Suzuki SX4 is most certainly nimbler than the Eclipse, something to consider if you do a lot of city driving; on the flip side, keep in mind that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
The Mitsubishi Eclipse has a more massive engine than the Suzuki SX4. Keep in mind that smaller engines are often cheaper to fix, but smaller engines can be stressed more.
Torque equals pickup, and the Mitsubishi Eclipse will have picked up and gone by the time the Suzuki SX4 finally gets moving.
The Suzuki SX4 could learn a lesson or two from the Eclipse when it comes to pickup.
Comfort
Taller drivers will considerably enjoy the extra head room in the Suzuki SX4's front cabin compared to the Mitsubishi Eclipse.
The Suzuki SX4 offers more head- and leg-room to your passengers than the Eclipse does.
Overview
The basic after-sale protection that comes with the SX4 isn't quite as generous as the Eclipse's.