Defective master cylinders are being recalled in the 2018-2019 Tacoma to fix spongy brakes and longer stopping distances. From CarComplaints.com:
About 44,000 model year 2018-2019 Tacoma master cylinder seals are defective due to manufacturing problems with the supplier.
The master cylinder takes force from the pedal and converts it into hydraulic pressure that can be distributed to the brakes. But it needs brake fluid to build that pressure.
No fluid, no pressure → no pressure, no brakes → no brakes, no fun.