There's no MPGe on the Volt that I've been been able to find. According to notes on the Voltstats home page it calculates all electric miles as 93 or 98 MPGe depending on the model year since they don't have access to OnStar data for actual kWhrs used. I have to say reading all this is making me think about seeing how much my dealer would give me for C-Max. Looks like they have 2 Energi's in stock. One has the 302a package that's equipped just like mine except it has parking assist.