There is one more area that you neglected to consider, many dealers remove cigar lighters and most anything else that's small or loose from cars on the showroom floor or in the lot due to "light fingered" potential car buyers. When the car is eventually sold and delivered, there is a mini-mad scramble to make sure all the goodies are back in the car; mats, manuals, lighter, spare, jack, etc. The salesman and car prep crew don't always get it correct, hence the different lighter.
If you cannot document the anomaly, be correct.
Jim