Introduction To Roth Automotive Science › Forums › Choosing a New Car › Automatic or Manual? Tagged: automatic transmission, fuel economy, manual transmission, shifting This topic has 1 reply, 2 voices, and was last updated 3 years, 6 months ago by theory816. Viewing 1 post (of 1 total) Author Posts October 11, 2021 at 2:01 am #479 theory816Participant What are the environmental impact of a manual vs automatic? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In