Garmin
I installed a nice female English voice onto it, which for some reason I find comforting. (That's "English" as in "from England".) I derive endless amusement from her calling the on- or off-ramp a "slip road", and other English phrasings.
Ours is set to Afrikaans. It's far more different from Dutch than English is from American, in grammar, vocabulary as well as pronunciation, but for us it's perfectly comprehensible in general, and driving instructions are a very limited set of sentences anyway.
For maps I've changed to Openstreetmap.