Interesting breakdown - and yeah, anyone who’s owned an SUV for a while knows the repair bills can climb fast.
The point about AWD/4WD adding complexity is spot on. It’s not just one extra part, it’s an entire system layered on top — diffs, transfer case/PTU, extra sensors — so naturally costs stack up compared to a simple FWD setup.
I do agree with the idea that OEM parts tend to matter more on SUVs, especially for things like steering, hubs, or anything tied into electronics. I’ve seen aftermarket work fine on smaller cars but cause weird issues on heavier or more complex setups.
Used OEM can definitely make sense in the right situations - especially for big-ticket items like differentials or transmissions where new pricing gets a bit crazy. As long as the source is good and you know the part’s history, it can be a solid option.
That said, I’d still be a bit cautious depending on the part - wear items vs structural/drivetrain pieces aren’t the same conversation. But overall, yeah… for SUVs, balancing cost vs reliability is a much bigger deal than it is on smaller cars.