The wife went down to KY in her 3 last weekend for a baby shower and had a few instances where her phone lost reception and couldn't use maps. So hopped on Amazon and ordered 2 $28 navigation sd cards since the 25 mz3 and cx70 apparently use the same cards. Got em both and put them in both vehicles. Maps work as intended and the added bonus of the speed limit signs being put on the guage cluster (although not always accurate) is nice!