I gave up on car mags along time ago. Waste of time and money IMO. Most of the articles are rehashed over and over, as well as the same pictures showing up in 5 different mags or showing up in the same one again and again.
I used to get :
Chevy High Perf.
GM High Tech Perf
Super Chevy or something like that
The only one I really liked that had great articles and never reused old material was GMHTP.
I let the subscriptions expire years ago for the same reasons that Vette94 gave. There is more, better new information on the internet now than in mags. There are also forums like DC and that other one. You can get an almost immediate answer to just about any question and see new cars better than the mags can portray.