I bought a Sonata years ago and it ran great for a few years then it just started dying, burning oil with blue smoke when I start the car, really sluggish acceleration, and if I turn eco mode on the car basically has a stroke and sounds like it's going to explode if I try and get on a highway.

I took it in and they told me there's nothing wrong with it quite literally while a blue cloud of smoke shot out the exhaust when they were telling me it's fine. They refuse to acknowledge anythings wrong.

Had to get a part replaced which meant they had to remove the dashboard to do it, realize after I leave when I go to get gas that the gas cap won't open nor the trunk. So I assume they forgot to plug back in those buttons (they are on the same wiring harness), they tell me it was the fuse and it's either $75 to replace the fuse or $150 to diagnose it. It was working fine before they had it and I have no aftermarket mods, have never touched the wiring, and never touched the battery, but they just did so it makes sense that within this short period of time the cause of the fuse is from their work. It's not something that I can prove but it's the most logical reason and fuses are dirt cheap but nope, they not just denied it they then tried to gaslight me.

First he said it was an old fuse and that's why it went, I'm not electrical engineer and fuses can corrode this one was clean and fuses don't just go bad they have too high a voltage traveling and they melt that's their purpose. So after that explanation the guy told me that they never had to touch the dashboard so it couldn't be them and goes into this very detailed technical explanation of how they can do what they needed to do (replace the steering wheel coupler). I told him I watched a YouTube video from their official techs showing how the part is replaced and the entire steering wheel column has to be dropped out and/or removed to replace it, one of their techs happens by and we ask him and he confirms what I said. So now the goal post moves again and he tells me that they did have to remove the dashboard and interact with those systems but by simply pushing the button in the manner the system is designed for the system will short out. I point out that sounds like a design flaw and should be covered under the warranty, they told me it's not.

I was literally thinking of buying a new car to get Android auto as my sonata was prior to that addition, but when their own techs use the argument that their cars are garbage so they shouldn't be responsible there's no way I'd buy Hyundai again so now I'm waiting on availability to buy a new Toyota. So yeah, really fuck Hyundai and Hyundai of Trenton especially.