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2016-17 Volt engine / power train; update improvement in mpg on gas

1287 Views 5 Replies 5 Participants Last post by  Saint
Has any other forum members noticed that after the engine software update their mpg's on gas has improved. We have a 2016 Volt Premier purchased July 2016.

I noticed at least 3-4 mpg improvement on gas, when compared to pre update. I compared the monthy mpg cs averages for comparison, also last few trips were over 50 mpg on gas, summer conditions and moderate speeds of course.

Electric range also seems to have somewhat improved. Yesterday fully charged the electric range read 68 miles. Infact yesterday my wife and I went fishing roundtrip 135.5 miles, Wilson River in Tillamook Oregon via Highway 101. 68.1 miles on gas (50 mpg) and 67.4 on electric, still had 1 mile left when we arrived home. Cost less to take the Volt than our 2010 Prius even including $1.80 for a full charge of electricity.
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I haven't heard about a software update. Was it part of a TSB, or other program? I haven't had my Volt in for service yet (only at 2100 miles) so I'm wondering if this is something I should inquire about.
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