Cost
As far as gas mileage, the Suzuki SX4 bests the Suzuki Grand Vitara.
The Suzuki Grand Vitara is markedly costlier than the Suzuki SX4 in terms of MSRP.
The Suzuki Grand Vitara will cost you a bunch of money in gas every year compared to the SX4.
Utility
The Suzuki Grand Vitara is likely a better choice than the Suzuki SX4 with respect to hauling capacity, especially if you frequently need to carry a lot of loot or big pets.
Neither the Suzuki Grand Vitara nor the SX4 has a marked advantage in terms of seating capacity.
Convenience
You'll quite certainly have to take the Suzuki SX4 for a fill-up more often than the Suzuki Grand Vitara because of its tank size and gas mileage.
Comfort
While the front cabin in the Grand Vitara offers a bit more head room than the Suzuki SX4, there honestly isn't much of a difference.
The Suzuki Grand Vitara offers more head- and leg-room to your passengers than the Suzuki SX4 does.
Dimensions
The Suzuki Grand Vitara is quite a bit heavier than the Suzuki SX4.
Your wallet will hurt more every time you fill up the Suzuki Grand Vitara than the SX4 because of its bigger tank.
The Suzuki Grand Vitara rides lower than the Suzuki SX4, which is a good thing for its center of gravity and ease of access.
The SX4 and the Grand Vitara compete for the same parking spaces.
Performance
When it comes to horsepower, the Grand Vitara packs quite a punch and will knock the Suzuki SX4 down a few rungs. However, remember that high horsepower engines often command higher insurance premiums.
Handling
The Suzuki Grand Vitara and the Suzuki SX4 have approximately comparable tires.
Drivetrain
The Suzuki Grand Vitara has a larger engine than the Suzuki SX4. Remember that smaller engines are often cheaper to fix, but smaller engines can be stressed more.
Torque is roughly equivalent to acceleration, and in this respect, the Grand Vitara is substantially more powerful than the SX4.
Torque equals pickup, and the Suzuki Grand Vitara will have picked up and gone by the time the SX4 finally gets moving.
Overview
The SX4 and the Suzuki Grand Vitara have the same basic after-sale protection.
With respect to after-sale protection against corrosion, the Suzuki Grand Vitara and the Suzuki SX4 have the same coverage.