It's not about staus, it's about comfort. Compared to the horrors of basic economy, premium econ offers SOME respite. Not much, but it's still better. And this is the same of the Mercedes example. A 30k Benz (the CLA) is still a better, more well built, comfortable and beautiful car than a 30k Ford. Sure, if you want social status buy the SL Class. But on a day to day basis, a Benz is a Benz and there is a reason they are regarded as status symbols. Fundamentally, they are actually better cars. You may have no status with the higher classes of German car drivers if you have a CLA, but you will still get envious/reverse snob hatred glares from the guy in the beat up 10 year old Sentra.
If you don't care, don't seek status, and are only concerned about savings and economy..buy the used Sentra. It beats walking. Economy is like the Sentra...a barebones, uncomfortable, utilitarian seat. It will get you there, same as an F seat..but the experience will not be pleasant.