Handling
With their similar turning radiuses, the Mercedes-Benz C-Class and the Toyota Avalon most certainly handle roughly the same into and out of tight spots.
Drivetrain
The Toyota Avalon has no lessons to learn regarding torque from the Mercedes-Benz C-Class.
Utility
The Mercedes-Benz and the Toyota Avalon can accommodate the same number of passengers.
Convenience
You will most certainly have to visit your friendly gas station more often with the Mercedes-Benz C-Class than with the Avalon.
Comfort
Taller drivers will significantly enjoy the extra head room in the Toyota's front cabin compared to the Mercedes-Benz.
The Toyota Avalon offers more head- and leg-room to your passengers than the Mercedes-Benz C-Class does.
Dimensions
The Mercedes-Benz C-Class's tank is roughly the same size as the Toyota Avalon's, though the Toyota Avalon's is slightly bigger.
The Mercedes-Benz C-Class and the Toyota Avalon 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. The Toyota Avalon is substantially cheaper to get to the dealership than the Mercedes-Benz C-Class.
There really isn't much of a difference in gas mileage here, but if you must know, the Avalon is a tad more economical than the Mercedes-Benz.
When it comes to fuel economy, the Toyota Avalon and the Mercedes-Benz C-Class don't differ much.
The Toyota Avalon is significantly less expensive than the Mercedes-Benz C-Class in terms of MSRP.
Overview
The basic after-sale protection that comes with the Toyota Avalon isn't quite as generous as the C-Class's.