For me, Autosport magazine lost it's USP a decade or more ago. THere was so much great coverage of "lesser" series like the junior formulae, club racing, hillclimbing etc. It just lost all that...and "replaced" it with hyped articles about F1, Indycar, Le Mans.....series I can read about for free in any number of websites.
The reason why the likes of Doctor Who magazine continue to exist is becuase they offer something more than you can get via the plethora of free Doctor Who websites. Sure I can find reviews of episodes, news and rumours about the current/next series, even occasionally interviews with cast and crew. But the official magazine offers exclusive interviews, photos and extras like DVDs or free downloads of audio dramas.
If it is going to survive, Autosport magazine needs a USP and it just doesn't have one any more. It used to be the magazine that racing drivers read themselves....from occasional club races and karters to World Champions, Indy 500 winners and F1 team principals.
If it was decided that the old USP of offering coverage of series which weren't represented elsewhere was not going to persuade people to buy....then they need a new USP. Motorsport network owns archives of photos (LAT) and videos (Duke)....why not occasionally offer a DVD with tantalising highlights of a few of the hundreds of videos they could sell for download or on disc....a preview of the photo archive....I admit I haven't bought the mag for years but when I stopped, there were no truly sensible and in-depth interviews with really interesting and/or important people. A four page spread of Claire Williams explaining how she believes she can get Williams out of the mire and what it's like being the most senior woman in the paddock....or a feature article with Toto Wolf, Christian Horner and Mattia Binotto having a round table discussion about the 2019 season and the future of F1.....have Seb Vettel guest edit an issue...things you won't get by picking up free news online.