Performance
When it comes to horsepower, the Mazda MAZDA6 packs quite a punch and will knock the Toyota Corolla down a few rungs. On the flip side, note that high horsepower engines often command higher insurance premiums.
Handling
With their similar turning circles, the Mazda and the Toyota Corolla most certainly handle almost the same into and out of tight spots.
Drivetrain
The Mazda MAZDA6's engine is significantly larger than the Toyota Corolla's. Bear in mind that larger engines may use more gasoline than smaller ones.
The Mazda packs quite a punch compared to the Toyota Corolla in terms of torque, which is the force that lets you accelerate quickly.
Utility
The Toyota Corolla and the Mazda MAZDA6 can accommodate the same number of passengers.
Comfort
While the front cabin in the Mazda offers a bit more head room than the Toyota Corolla, there honestly isn't much of a difference.
The Mazda is not particularly more spacious for your passengers than the Toyota Corolla.
Dimensions
The Mazda MAZDA6 is tremendously more bulky than the Toyota.
Your wallet will hurt more every time you fill up the Mazda than the Toyota because of its larger tank.
The Toyota Corolla and the Mazda MAZDA6 compete for the same parking spaces.
The Corolla's shorter wheelbase will give a more agile feel in daily traffic. On the other hand, the Mazda MAZDA6 is likely to have a smoother, more stable ride.
Cost
The Toyota Corolla is considerably less pricey than the MAZDA6 in terms of MSRP.
Warranty
The Mazda and the Toyota Corolla have the same basic warranty.