I bought my 2009 Kia Sedona in the summer of 2016 with 142,000 km and no accidents. It was perfect when I test drove it, but little things started going wrong after I brought it home. Nothing big at first - just a few plastic pieces broken and other minor electrical glitches - but then the big stuff just started happening in Dec. 2017.
Car was fine one day, the next day it wouldn't start. Just wouldn't start! No crank, nothing. Then, I got it started with a workaround and the engine light is on. Don't have the money at the moment to get it fixed (and I suspect you are considering a Kia Sedona because it's cheaper than a Toyota Sienna or Honda Odyssey), but at the same time I discovered the windshield wipers weren't working. I believe it's the motor, but that's $200 even if I do all the labour myself. And then a few days ago? The transmission is stuck in 3rd gear! Greeeaaaaaatttttttttttt...
I will never ever ever buy another Kia again. Seriously. There's a reason that a used Kia Sedona is $5,000 cheaper than an equivalent Toyota Sienna or Honda Odyssey - because you'll end up paying that $5,000 in repairs sooner or later!