Utility
The Toyota Highlander and the Mazda CX-9 can accommodate the same number of passengers.
Dimensions
The Toyota Highlander's tank is approximately the same size as the Mazda's, though the Mazda CX-9's is a tad larger.
The Toyota and the CX-9 compete for the same parking spaces.
Convenience
The Mazda CX-9's fuel tank will need to be replenished slightly more often than the unit in the Toyota Highlander.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs almost the same to get the Mazda CX-9 to the dealership as the Toyota Highlander.
When it comes to fuel economy, the Highlander bests the Mazda.
The Mazda CX-9 guzzles a lot of gasoline compared to the Toyota Highlander.
Regarding MSRP, the Toyota doesn't cost much less than the Mazda CX-9.
Handling
With their comparable turning circles, the Mazda CX-9 and the Toyota Highlander likely handle about the same into and out of tight spots.
Drivetrain
The Mazda has a more massive engine than the Toyota Highlander. Bear in mind that smaller engines are often cheaper to fix, but a smaller engine usually has to work a little harder.
Torque is roughly equivalent to acceleration, and in this respect, the Mazda CX-9 is substantially more powerful than the Toyota Highlander.
Torque equals pickup, and the Mazda CX-9 will have picked up and gone by the time the Toyota finally gets moving.
Comfort
While the front cabin in the Toyota Highlander offers a bit more head room than the Mazda, there frankly isn't much of a difference.
While the rear of the Mazda CX-9 offers a bit more head- and leg-room than the Toyota Highlander, there honestly isn't much of a difference.
Warranty
The Mazda CX-9 and the Highlander have the same basic warranty.