Model Y (Image: Tesla) Casual observers are likely hard-pressed to tell the difference between Tesla's lower-cost models: the Model 3 and Model Y. The two electric vehicles—one a four-door car and the other a four-door hatchback SUV—share around 75% of their looks and parts. The move was a cost-cutting decision that allowed Tesla to ramp up production of multiple vehicles at once. And both versions are relatively affordable: the Model 3 starts around $38,990 while the Model Y comes in around $50,000. The flashier Model S and Model X—with its gullwing doors—will set you back at least $79,990 or $89,990, respectively. For budget-minded shoppers looking to ditch their gas guzzlers for a Tesla, which model is best? Let's break it down.