The Model S is about 4,600 lbs vs 3,500 for the Chevy Volt. If Tesla can produce the Model 3 around 3,800 lbs it will be in some interesting company, especially given the low center of gravity.
Nissan GTR: 3,800 lbs
BMW M4: 3,600 lbs
Porsche 911 turbo: 3,600 (its bigger than you think)