They want something that reliably gets them from A to B and back, with occasional side trips to C, D and E. They want something that does that in a way that matches their personal style. They want something that isn't going to cost them an arm and a leg to run.
Forty, fifty, and sixty years ago people cared a lot more. Starting really in the mid-90s, that changed. Nowadays, there are probably as many gearheads as there were decades ago, but as a population they represent a smaller percentage. And there's a tiny percentage of people who care only so that they can mod their engines to run less efficiently so they can pwn the libz.
Inasmuch as people do care about the 1.3 4 banger — they choose it because it generally runs more reliably over time with fewer litres burned per 100km.
But if you are going to spend 10k$+ on a car, then you start caring, A LOT. I've seen the change from when I was a student willing to take any crap on wheel, vs when I had some money to burn on a car and I spent weeks looking at everything to end up buying a 10k$ 20yo Porsche 911 :D See, I didn't even look at the fuel cost: only the engine perf per dollars. And it cost me an arm and a leg to run, in Hong Kong where the fuel cost is the highest in the world !
People don't work as rational machines balancing perfectly cost and profit in a constant manner over time. It's more a constraint compromise game with a repressed desire for luxury that seem to drive us: you'll buy what you can afford and within those boundaries you will choose comfort and design over economic optimization. Like when people buy an iphone, evidently they didn't look at all about cost for performance and choose something economically suboptimal but luxurious.
Accept it and you'll start liking them more I think.
> They want something that isn't going to cost them an arm and a leg to run.
Pick a lane.