@W.E.Bgood,
There was an article about it in MSN autos a few years ago, in 2009-2010 time frame, and also in automotive trade publications a few weeks prior to the MSN column. Toyota, possibly sensing an oncoming investigation, admitted theirs being off by three percent. I have personal knowledge of it's authenticity as well. A long time friend of mine will only buy Honda vehicles. He moved his family to another city, and their new house is exactly 100.2 miles from my house, verified by my three Domestic vehicles, and a rented 2013 Ford Fusion, which also showed 100.2 miles. Every one of their Hondas show 106.0 miles for the same distance. A 2004 Accord, 2007 Pilot, and a 2011 Odyssey. He even tried his son's 2009 Civic, same thing, 106.0 miles. Not sure if they have corrected the issue since 2011, but he is considering buying a 2014 Honda. Not sure if Toyota has corrected theirs, either. Hope your cough gets better soon.