Tips for buying a used vehicles?

Hey everyone

I’m on the hunt for a used minivan, mainly looking at Honda Odyssey, Toyota Sienna, or Kia Carnival. I know the usual stuff like checking maintenance records and accident history, but I’m a bit unsure about age and mileage. I’ve heard people talk about a year-to-mileage ratio, like what’s reasonable, and from what I’ve read 15k–20k km per year seems typical.

I’m also curious which model years tend to hold up better and if there are any common issues I should watch out for with these vans. When you’re shopping for a used minivan, how do you usually balance age versus mileage? Would you pick a newer van with higher km over an older one with lower km? Any other tips or red flags would be super helpful.

Thanks so much in advance!