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 Porsche to the dealership as the Dodge Viper.
Producing an exact gas mileage evaluation is so difficult that some think not even the federal government can do it, but it looks as though the Porsche 911 is the winner as far as fuel economy.
Regarding fuel economy, the 911 beats the Viper.
When it comes to MSRP, the Dodge Viper doesn't cost much less than the Porsche 911.
The Porsche 911 will save you a bundle at the pump every year compared to the Dodge Viper.
Utility
The Porsche will indubitably prove more practical than the Dodge Viper for those of you with frequent kid-cargo.
Convenience
You will doubtless have to visit your friendly gas station more often with the Dodge Viper than with the Porsche 911.
You'll very likely have to take the Dodge Viper for a fill-up more often than the Porsche because of its tank size and gas mileage.
Dimensions
The Dodge Viper is somewhat more ponderous than the Porsche 911.
The Porsche 911's tank is roughly the same size as the Dodge Viper's, though the Dodge Viper's is a little bigger.
The Dodge and the Porsche 911 compete for the same parking spaces.
The Porsche 911's shorter wheelbase will likely give a sprier feel in daily traffic. On the other hand, the Dodge Viper is likely to have a smoother, more stable ride.
Performance
With that kind of horsepower, both the Dodge and the Porsche 911 are true sportscars.
Handling
The Dodge Viper has substantially bigger tires than the Porsche 911. Remember that wider tires might look and feel better, while narrower tires may provide better handling in deep snow.
Drivetrain
The Dodge Viper has a more sizeable engine than the Porsche. Note that smaller engines are often cheaper to fix, but a smaller engine usually has to work a little harder.
Torque is roughly equivalent to acceleration, and in this respect, the Dodge Viper is tremendously more powerful than the Porsche 911.
The Dodge packs quite a wallop compared to the Porsche 911 when it comes to torque, which is roughly equivalent to acceleration.
Overview
The basic warranty that comes with the Dodge Viper isn't quite as generous as the Porsche 911's.
Other
The Dodge Viper emits fewer smog-forming pollutants per 15,000 miles than the Porsche 911.