Handling
The Volkswagen GTI and the MAZDA6 have roughly comparable tires.
With their similar turning radii, the Volkswagen GTI and the Mazda MAZDA6 indubitably handle roughly the same into and out of tight spots.
Drivetrain
The Mazda MAZDA6's engine is substantially more massive than the Volkswagen's. Keep in mind that larger engines may use more gasoline than smaller ones.
Torque is roughly equivalent to acceleration, and in this respect, the Volkswagen GTI isn't much more powerful than the Mazda MAZDA6.
Utility
Neither the Mazda nor the Volkswagen GTI has a marked advantage in terms of seating capacity.
Comfort
While the front cabin in the Volkswagen GTI offers a bit more head room than the Mazda MAZDA6, there really isn't much of a difference.
The Volkswagen GTI is not particularly roomier for your passengers than the Mazda.
Dimensions
The MAZDA6 is a little heavier than the Volkswagen GTI.
Your wallet will hurt more every time you fill up the Mazda than the Volkswagen because of its larger tank.
The Volkswagen and the Mazda MAZDA6 compete for the same parking spaces.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs approximately the same to get the Mazda MAZDA6 to the dealership as the Volkswagen GTI.
The Mazda MAZDA6 isn't much more expensive than the Volkswagen as far as MSRP.
Overview
The basic warranty that comes with the Mazda isn't quite as generous as the Volkswagen GTI's.