Utility
The Infiniti M35 is a better choice than the BMW as far as transporting cargo, especially if you often need to carry a lot of suitcases or large pets.
The BMW 3 Series and the Infiniti can accommodate the same number of passengers.
Dimensions
The M35 is markedly more ponderous than the BMW 3 Series.
Your wallet will hurt more every time you fill up the Infiniti M35 than the BMW 3 Series because of its bigger tank.
The BMW 3 Series and the Infiniti M35 compete for the same parking spaces.
Convenience
You won't have to visit your friendly gas station more often with the BMW than with the Infiniti M35, because both offer comparable ranges.
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 Infiniti M35 to the dealership as the BMW 3 Series.
Producing a precise fuel economy evaluation is so hard that some think not even the federal government can do it, but it looks as though the BMW 3 Series is the winner when it comes to fuel economy.
The Infiniti pales in comparison to the 3 Series in terms of gas mileage.
The Infiniti M35 is substantially more expensive than the BMW 3 Series with respect to MSRP.
Handling
The Infiniti M35 and the BMW 3 Series have approximately similar tires.
With their similar turning circles, the 3 Series and the Infiniti M35 very likely handle approximately the same into and out of tight spots.
Drivetrain
The BMW's engine is markedly smaller than the Infiniti M35's. Keep in mind that smaller engines can be stressed more; on the flip side, smaller engines are often cheaper to fix.
Torque equals pickup, and the Infiniti M35 will have picked up and gone by the time the BMW 3 Series finally gets moving.
Comfort
Taller drivers will significantly enjoy the extra head room in the Infiniti M35's front cabin compared to the BMW.
The Infiniti offers more head- and leg-room to your passengers than the BMW 3 Series does.
Overview
The basic after-sale protection that comes with the BMW 3 Series isn't quite as generous as the Infiniti's.