Honesty, the only difference I notice from the two vehicles are the grills/front bumper... Financially, it will cost more than its worth for the manufacturer, Mazda to have two separate assembly of cars when it comes to the mechanical parts... I say go ahead and replace the parts,
I know that an air filter from a 2014 Mazda fits the 2016 iA. Can anyone tell me if brake pads from a 2014 Mazda 2 will fit the 2016 Scion iA? the previous Mazda 2 from 2014 was used as a bases for the Scion iA, but we need to figure out which parts swap.
I believe the ia and the mazda cx-3 uses similar parts too.. I changed the cabin air filter about 4 months ago by searching cx-3 air filter on amazon.. I also notice the arm rest that's on option for the ia is the same arm rest the cx-3 uses too.. I would think other parts are the same too..
I'm not to sure about headlights... I feel there isn't really much aftermarket support for this vehicle.. What a bummer..
Honestly, I wished Toyota didn't change the front grill and headlights, Mazda design language is so much better.
Honestly they are pretty expensive.... 155 - 170 on eBay and Amazon...
But if your willing... (I'm not willing to put in the work... I can live without one)...
Google your local salvage yards, totalled collision centers etc...... Keep a look out for vehicles that come in that are 2016-2018 Mazda cx-3.... usually cars in general in these places have great parts for super cheap... You could probably walk away with a practical new arm rest for cheap. Also the parts are bargainable too. Would be surprised if you got one for 10 bucks