Our 2014 SV, purchased used from a private seller 2.5 years ago, has a tube on the inside of the washer fluid filler cap. I never really worry about the fluid level, I just fill it to the top every couple months. But, I'm now curious to give the tube a try next time I pop the hood.
I'm one of those profligate owners who, when I'm not making s'mores over a stack of flaming $2 bills, like to splurge on genuine high-dollar (<$4/gallon) Wal-Mart washer fluid. I even swap between summer and winter fluid in the appropriate season, and I suck out the remaining summer fluid in the fall and vice-versa in the spring. Cause I'm crazy.
A gallon of each fills our two cars for well over a year, so I'm spending maybe $0.25/month on each vehicle. It's a heavy financial burden, but almost every time we go to Aldi's some lazy person left a cart in the parking lot so a tiny bit of effort yields a free quarter and I've just paid for my washer fluid for a month. If there are two carts in the lot I'm raking in pure profit. Like taking candy from a baby.
If you're weird like me and run seasonal washer fluid, remember to run the rear washer for a while to clear the tube of the old fluid after swapping from summer to winter fluid or it won't work when you really need it.