BMW 535i Owner's Manual page 257

Capacities
Fuel tank
Windshield and headlamp
washer system
Online Edition for Part no. 01 41 2604541 - 03 10 500
US gal/liters approx. 18.5/70
US quarts/liters approx. 5.3/5.0
Notes
Fuel quality, refer
to page 223
257