about 2 1/2 gallons.
Pulsar 180 has 1.5 liters for reserve usage
Many are heavy cars with powerful engines. It takes fuel to move them.
The 2004 Mercedes-Benz E-Class's engine produces 232 ft-lbs. @ 3000 rpm.
The 2004 Mercedes-Benz SL-Class's engine produces 339 ft-lbs. @ 2700 rpm.
The 2004 Mercedes-Benz S-Class's engine produces 295 ft-lbs. @ 3000 rpm.
The 2004 Mercedes-Benz C-Class's engine produces 192 ft-lbs. @ 3500 rpm.
The 2004 Mercedes-Benz SLK-Class's engine produces 200 ft-lbs. @ 2500 rpm.
The 2004 Mercedes-Benz G-Class's engine produces 336 ft-lbs. @ 2800 rpm.
The 2004 Mercedes-Benz M-Class's engine produces 254 ft-lbs. @ 3000 rpm.
The 2004 Mercedes-Benz CL-Class's engine produces 339 ft-lbs. @ 2700 rpm.
The Ford Focus 2004 ZTS has a 14 gallon fuel tank.
Reserve capacities are typically no larger than 2 gallons. Many are less than that.