One of the most common type vehicles sold in America is the mid-size 4 door sedan. Over the years, the Japanese/Asian has dominated this segment of market. American auto makers have been adjusting to this re-defined market.
The baseline engine is 2.5 liter 4 cylinder variants.
The car width ranges from 71" to 73".
The overall length ranges from 188" to 192".
Most of the vehicles nowadays have same safety features, 6-air bags, ABS, ESC, Brake Assist, and similar EPA fuel efficiency rating (within less than 10% of each others)
Each of the automakers would try to differentiate from each other by creating different styling, driving dynamics and interior design.
For example: Toyota Camry is for quietness, but not for handling.