Obviously not, as even a good one may go bad. And obviously, the
feelings that women have that they are being taken advantage of come
from some truth (really, taking advantage of suckers is gender-blind,
and surely some macho guys overestimate their own ability to judge).
Part of the reason I got a good deal on my bug was the little old lady
felt the vendors were taking advantage of a little old lady. Perhaps
they were, but there were things that simply needed to be fixed. I
felt the same way getting those things fixed even understanding the
issues as a car guy.
All you can really do is ask your friends who've they had reasonable
dealings with recently, there's no deterministic algorithm. And then
you risk the fact that your friends might be bat-shit crazy. With
yelp and similar, there's the additional sock-puppet risk.
When I was in car clubs there were usually people who worked in the
biz who could direct you towards the good guys. That's not feasible
for the general public, though perhaps everyone knows a car guy that
can help. I can say there was one group that was got uncomfortable
when they realized a member was subtly ripping them all off.
Years ago when I was auto-crossing, I got to know my local Goodyear
dealer well, really liked him, and gave him a lot of business. Then
he got some roid-raged weightlifter guy as a manager, I couldn't deal
with it, so went elsewhere. Eventually that guy left and I went
back. With that set of tires, the ABS light came on as I left, and
they told me it would go out in a few miles (true in some cases).
Well it didn't go out, turned out the installer had cut the ABS
sensors. So they had to replace them, the manager showed me the
invoice, parts alone certainly wiped out any profit they might have
made. While I felt they tried to make good both by fixing it and
fessin' up, really, this is brakes we're talking about, they lost my
business. So it goes.
My wife is a psychologist, and doesn't want me to go to one place
because one of her patients works there. There's another place I
avoid because a former tenant works there, he bolted and left me to
deal with junk truck and engines. lol
http://latimesblogs.latimes.com/lanow/2013/02/dorner-manhunt-more-snow-expected-for-big-bear-as-residents-wait-1.html