Gran Turismo 7 will require an Internet connection. As previously reported, you’ll need to have your console online in order to enjoy single player modes like the campaign and GT Café, as well as features like the livery editor. While it’s not yet clear which modes will be available offline, predecessor GT Sport limited gameplay to just the Arcade mode, which is obviously a fraction of the overall experience.
Asked directly about the reasoning behind this decision, series creator Kazunori Yamauchi explained that it’s to prevent cheating. He insinuated that the only way to ensure save files aren’t hacked or edited is by storing them on Polyphony Digital’s servers, and therefore you’ll need an Internet connection in order to make progress in offline modes. The requirement for the online connection isn't specific to the Cafe per se. It's just to prevent cheating overall from people trying to modify the save data, so that's the reason for the online connection." He continues: "The online connection is required for the campaign mode."
Yamauchi at least explains the arcade mode won't have the online requirement bolted on since it doesn't affect save data. So, if anything requires some sort of save functionality in Gran Turismo 7, you'll need to stay connected in order to access it.
It’s a decision that’s unlikely to be well-received by fans, especially considering a big emphasis of Gran Turismo 7 is on its single player content. To be fair, it looks like it’s going to be worth having your console hooked up: we were treated to an early look at the title this week, and reckon it’s shaping up to be the biggest and best Gran Turismo yet. You can read our impressions through here.