Performance
With that kind of horsepower, both the Boxster and the Mercedes-Benz SLK-Class are genuine sportscars.
Handling
With their similar turning circles, the Mercedes-Benz SLK-Class and the Porsche Boxster most certainly handle approximately the same into and out of tight spots.
Drivetrain
The Porsche Boxster's engine is substantially smaller than the Mercedes-Benz SLK-Class's. Remember that a smaller engine usually has to work a little harder; on the other hand, smaller engines typically get better gas mileage.
Torque is roughly equivalent to acceleration, and in this respect, the Mercedes-Benz SLK-Class is substantially more powerful than the Porsche.
Utility
Neither the Porsche nor the Mercedes-Benz has a marked advantage when it comes to seating capacity.
Comfort
While the front cabin in the Boxster offers a bit more head room than the Mercedes-Benz, there really isn't much of a difference.
Dimensions
The Mercedes-Benz SLK-Class is tremendously more bulky than the Porsche Boxster.
The Porsche Boxster's tank is roughly the same size as the Mercedes-Benz SLK-Class's, though the Mercedes-Benz SLK-Class's is slightly larger.
The Mercedes-Benz SLK-Class and the Porsche 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 about the same to get the Mercedes-Benz SLK-Class to the dealership as the Porsche Boxster.
The Porsche Boxster isn't much pricier than the Mercedes-Benz SLK-Class regarding MSRP.
Warranty
The Mercedes-Benz SLK-Class and the Porsche Boxster have the same basic after-sale protection.