I'm a sucker for car magazines and must spend a fair amount every month on them. I usually read them cover to cover in a day or so.

Car: used to be greeat (15 years ago), now too generic; like most car mags it's written by kids.
Autocar: generally good weekly paper.
Evo: the odd interesting article, mainly laddish fantasies.
Thoroughbred and Classic Car: nice pictures and interesting ads.
911 and Porsche World: interesting esoteric stuff.
Classic and Sportscar: vaguely interesting articles about "newer" classics.
Mercedes Enthusiast: keeps getting better.
Motorsport: probably the best racing car magazine in the world; really mature journalism.
Intersection: an exercise in typography, but very promising writing.

I also intermitently buy Road & track and Car and Driver, I like the longer, more grown-up articles.

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JJ Rodger
2013 G350 Bluetec
1999 SL 500
1993 E300 diesel T
1990 190