Per page 205 of my MY2015 Owner's Manual the capacity of the big tank is 5.5 litres or 9.7 pints.
There is no mention of the small tank in the fender well.
There is a fair bit of info about the washer system in the Workshop Manual, but it says nothing about the capacity of the front tank (presumably because it is fed from the rear tank), the nearest it gets is this:

"The low level sensors have a float, with integral magnet. Each
sensors has a contact, which is normally open when the reservoir is
full. When the fluid level reduces to approximately 1 liter, the
magnetic float pivots down, which causes the switch contact to close.
This closed circuit is sensed by the rear washer fluid reservoir
transfer pump, the transfer pump will transfer the washer fluid until
the front washer fluid reservoir level sensor sends a signal confirming
front washer fluid level is full."

 

 

I have put 5 litres in mine.
Maybe that stated capacity includes the front tank as well?

 

 

 

I wasn't even aware there was an additional tank in the front... The big tank presumably did end up in the rear for weight distribution, but one would wonder the why of such an apparently "complex" system with two tanks. I.e. why not just the one tank in the rear?

 

So that you don't need to wait 30 seconds for your jets to work, while the fluid travels 15 feet from the rear bumper?


Naahhh, can't be that, as SUVs and wagons have front tanks and rear washers, usually incorporating check valves. A check valve would be lighter than the extra tank...but the front tank may not be large enough for some jurisdictions (Canada) that mandate a certain capacity.


I haven't looked, is the pump in the front?

 

 

The first pic shows a pump on the left side, I think. (The white, round thingie.)

 

 

Both tanks have pumps.
The rear tank has a pump to move fluid to the front tank and the front tank has two pumps, one for the windscreen washers and one for the headlight washers.