I own probably a dozen digital multi-meters, with various function sets, capabilities, and price tags, and for most automotive use, my $25 AW Sperry generic digital multi meter doesn't do any better or worse than my $400 Fluke 87TrueRMS, or any of the others in between.
Yeah, the higher end DMMs are more durable, have back lighted screens, come with better probes and more features, and blah-blah-blah-blah, most of which aren't mandatory for working on auto electronics.
The only exception is that if you need tach & dwell readings, then you are going to need an automotive specific meter. I have a TIF with an inductive pickup for doing those readings, but aside from the tach and dwell readings, it's no different than any of the others.
Two recommendations, regardless of what brand you buy, one- pick up a spare set of probes with the longest cords you can find so you can work more comfortably in confined spaces and sometimes, there just isn't a safe place to set the meter close by. Two - pick up some alligator clip attachments for the probes or a set of alligator clip probes or some alligator clip jumpers, because sometimes, you just need 4 hands in a very confined space to test stuff in cars.