They did for the people who bought cars while the phony mpg was being advertised. I got a check of about $700 for my 2013 C-Max Energi.
There would be no reason to cut a check for later buyers who only saw the re-stated gas milage.
Their other scam was saying the traction motor could put out 88kW although the battery could only put out 68kW.
Ford has cell phone modems in their electric (Focus Electric) and PHEV (C-Max and Fusion) cars. According to the service manual a lot of information is provided to that modem but only a small part shows up on the App or website. No way of knowing if the modem just uploads that limited subset of data or if everything is uploaded with the rest kept for Ford use only.
They missed out on my data for the 1st 3.4 years I owned my PHEV because the original modems only did 2G AT&T and our AT&T tower only had 3G (it was installed after the 2G shutdown was announced). Ford finally replaced all the modems at the very very end of 2016 with 3G models.
For the last couple of decades 24 bit A/D converters have been used to digitize the output of seismometers so we don't do this anymore. Previously 16 bits was pretty much all you could get so if the input signal got too high there would be circuitry to reduce the voltage into the A/D to keep it from saturating.
Locally administered addresses are often used for low volume products where someone doesn't want to deal withe IEEE. Some dataloggers I was working on around the turn of the century used local addresses made up of a common 16 most significant bit code (with the local bit set) and the 32 least significant bits coming from a Dallas one-wire serial number chip. At the time IEEE wouldn't even let Dallas sell chips with MAC addresses in them. I think eventually IEEE gave in.
Nissan did make available a new cell phone available for the Leaf. If it was pretty new car it was free, otherwise the customer had to pay.
Ford made available new cell phone modems for it's two plug-in hybrid models as well it's all electric model. There was no charge for this.