While developing the Model 3, cutting costs is a top priority for Tesla. There are some known factors that will help Tesla to achieve this goal: - Battery technology and size - Overall smaller size compared to S and X - Steal body components instead of aluminum - Minimalistic interior with less parts, just one display - More sales - Simplified / optimised manufacturing process In general, most car manufacturers save costs on smaller cars by using less quality materials, less noise isolation and less standard equipment. For example, compare a BMW 3 series with a BMW 5 series. The 3 does not have the comfort and quality materials of the 5. What can we expect from Tesla with respect to Model 3? Will noise isolation be on par with Model S? Will the seats provide the same comfort and leather quality? Will general fit and finish be as good? Will standard equipment on the S be (expensive) options on the 3 (led lights, aluminum wheels, power seats, data connectivity, parking sensors, ...). What are your expectations?