Don't ever google medical symptoms. You'll convince yourself in ten minutes that you won't survive the month unless you are able to travel to Tibet to get treated by an ancient remedy that requires Sasquatch urine mixed with UFO brain fluid while standing inside a metal and glass pyramid that is really a communication device to the alien home world via telepathic powers. That's just the nature of looking on the internet.
1. I think forums invite lots of 'outlier' situations. Neither the members of the forum nor their issues are representative of the average owner. Kia sold 88,000 thousand Niros in 2018. Like any model/brand, there are always issues.
2. This isn't cutting edge technology....it's bleeding edge. This isn't Golf Mark VIII or a mid cycle refresh of a vehicle that's been in production 4 years using 90% of the same parts as most of the company. This is a brand new everything with little to no historical performance/manufacture/reliability comparatives.
3. I have a 2018 PHEV version. As far as I can tell, most of the issues were with 2017 and the first part of the 2018 build. I got mine in August 2018 and it has not been subject to ANY of the recalls and technical service bulletins mentioned here and elsewhere. They only refer to vehicles build before mine. My presumption is the 2019s are incrementally better than that and are pretty much bug free.
4. Related issue. In 26 years of marriage we have bought mostly used but also 4 new vehicles. They are in order:
a. 1995 Plymouth Neon. That's the model year the Neon debuted. Overall great car. But we found out there was a half year model the 1995 1/2 (yes that's what the dealer called it) because there were a couple issues so bad they decided to update mid model year. Found that out after the throttle stuck to the floor. Or rather not the throttle pedal and no not that sorta odd throttle issue Toyota had where it all turned out to be either user error or floormats in the way. Nope. This wasn't even the pedal but rather when the linkage entered the throttle body there was a valve or flap or whatever inside regulating the actual throughput....duh. That valve stuck wide open. So the pedal and the linkage were loose but the internal valve was stuck open. Luckily we didn't crash but let's just say when it happened, it was extremely bad situation. I got it unstuck by banging on the throttle body with a hammer. Took it to the dealer and they said there's a technical service bulletin but no recall. And the TSB wasn't free. $800 please to fix your dangerous vehicle. And that part was only the first six month of production and is why they issued a 95.5 model. Why no recall? Well apparently nobody had died yet. Recalls don't happen when problems are found. Recalls happen when it's obvious lawsuits will rain down otherwise.
b. 2000 Hyundai Elantra wagon---cruise control was flaky but nothing else. Model had been out awhile and in fact was the last year there was an Elantra wagon. For 2001 they launched the first Hyundai SUV which (the dealer even showed me) was exactly part for part an Elantra wagon other than black plastic cladding around wheel wells, larger wheels, and AWD added. Everything else was exactly the same. I got the very last Elantra on his lot and they never got any more because the SUVs had showed up. And said 'yeah, it's the same exact vehicle but even in the FWD version of the SUV, we can charge $5000 more than if it were a 'wagon' '.
c. 2001 Hyundai Accent--5 speed clutch simply wouldn't let you shift decent. Would grind into every gear (I had a commercial truck driving license at the time so know how to drive a 5 speed). Took it back to the dealer to get the clutch adjusted and that's when I found there was such a thing as an automatically adjusting clutch. The service manager's explanation was 'that's a feature'. He said Hyundai made them that way 'extra stiff' because people don't know how to drive them and they wanted more wear to be available. By 40,000 miles the clutch should be broken in he said. But for now (TSB) we are changing out the transmission grease and putting a pure synthetic in at no charge for customers who the shifting bugs them. They did....it helped....not completely....and yes by 40,000 it was smooth as silk.
d. 2011 Dodge Grand Caravan. At that point Dodge was nearly 30 years into making vans. Issues? Just the bad ones. 1. Brand new transmission desing. 6 speed. Terrible freaking transmission. Jumps and grabbed and skipped gears and all kinds of whacky crap. Nearly got stranded on a road trip. Numerous attempts at 'this time the coding upgrade is going to fix the shifting' Yep...made it worse. Took a solid 18 months before they could get the transmission to work at an acceptable (not good though) level. Sliding power doors? I want to throttle the designer. Owed it 7 years and they never did work right AND rattled and squeaked incessantly. All kinds of visits to 'fix' it. Very frustrating....just a badly designed door. and 3. The demons in the HVAC. Every freakin spring and every fall you could not get it to switch from AC to heat or vice versa. It was just plain strange. You'd get things like the defrosters blowing hot air at full speed while the AC vents threw cold air at max AC. Or front did one thing and back did another (regardless of position of the switches). Or left didn't do what the right did AC one side, heat the other (and yes the dual zone was synced/off). Or all of those at once where something different is going on at every vent. Once season transitioned played out it would settle down.
MPG issues? Nothing to do with any lack of performance on the part of Kia. All cars do it and all hybrids do it worse. So says the feds.....