Marty,
You'll hear lots of varying opinions on the use of premium gas when stated by the owners manual. Read yours carefully, if it is like mine, there is a recommended and a minimum. For my 01 V70 T5 it recommends 91 but the min is 87. I run 87 Chevron, and don't have any issues. However, a lot depends on driving style. I launch very gently, and drive like there was an egg between my foot and the peddle so the low octane gets me by. If I was to drive agressively, or pull a load to the mountains, then I'd load up on premium, because I'm going to need it.
Good luck on what car you decide, wish I could help more, but from all I've read, I'd give a lot of thought to what Klaus has to say.
Jerry
01 V70 T5
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