Maybe I'm just doing it wrong, but I've never really found Consumer Reports to be that informative when I'm looking to buy something. Often they rate things based on features I don't even care about.
(yes, you're doing it wrong)
I was already aware of all of those factors, they just don't ever seem like in-depth enough info to actually influence my decision.
The wheelchair metric seems a little more practical. My mother will soon have bought three cars using that as a filter. Or perhaps there's a built in assumption that any car capable of carrying a wheelchair can also carry golf clubs, I don't know.
Another good one I found is carsurvey.org, but I'm not sure how it'll hold up when (if not already) the marketing departments of car manufacturers swarm it.