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Discussion Starter · #1 ·
I drive a 2005 A4 1.8T automatic. So far, have only used premium. Is regular unleaded gasoline an option? Would I notice any difference in performance (I'm not a leadfoot, by any means)? Is premium gas suggested by Audi / users for any other reasons (engine / component longevity, etc.)?

Any advice would be great. Thanks.

- - Scott
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