Utility
The Nissan Xterra and the Toyota FJ Cruiser can accommodate the same number of passengers.
The Toyota FJ Cruiser is a better choice than the Nissan with respect to hauling capacity, especially if you often need to carry a lot of luggage or dogs.
Dimensions
The FJ Cruiser's tank is almost the same size as the Nissan Xterra's, though the Xterra's is somewhat bigger.
The Nissan Xterra and the Toyota compete for the same parking spaces.
Convenience
The Toyota FJ Cruiser's fuel tank will need to be replenished a bit more often than the unit in the Nissan Xterra.
Cost
The Nissan Xterra doesn't pale in comparison to the Toyota as far as gas mileage.
When it comes to gas mileage, the Nissan is somewhat better than the Toyota FJ Cruiser, but not by much.
The Toyota FJ Cruiser isn't much less costly than the Nissan Xterra when it comes to MSRP.
Handling
With its tighter turning radius, the Nissan Xterra is definitely more agile than the FJ Cruiser, something to consider if you do a lot of city driving; on the other hand, bear in mind that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
The Toyota FJ Cruiser has no lessons to learn as far as pickup from the Nissan Xterra.
Comfort
Taller drivers will substantially enjoy the extra head room in the Toyota FJ Cruiser's front cabin compared to the Nissan Xterra.
The ampler interior dimensions of the Nissan Xterra make it considerably roomier for your passengers than the Toyota FJ Cruiser.
Warranty
The Toyota FJ Cruiser and the Nissan have the same basic after-sale protection.