View my fuel log 2015 Mirage ES 1.2 automatic: 40.5 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.7 mpg (Imp)
There are tons of bluetooth speakers designed to fit in cupholders (and that handy 3rd cupholder). But I don't think anything beats that visor clip thingy.
If it fits the cup holder properly... I kinda like it better than the visor option.
Simplify and add lightness.