The LX and LS sedans have a 13.2 gallon capacity. The ZTS sedans have a 14 gallon capacity. I found this info on Edmunds.com.
The Ford Focus 2004 ZTS has a 14 gallon fuel tank.
The 2004 Ford Focus runs on regular unleaded.
13.2 gallons
The fuel tank capacity is ( 14 U.S. gallons ) on a 2007 Ford Focus
56 liters
A ford focus with a diesel engine has a fuel capacity of 60L (15.85 gallons.) Depending on the model, the Focus can get from 67 to 80 mpg estimated mileage.
According to the 2001 Ford Focus owners manual : ( 50 liters / 13.2 U.S. gallons )
2 gallons
According to the 2000 Ford Focus Owner Guide : ( 50.0 litres / 13.2 U.S. gallons )
According to the 2011 Ford Focus Owner Guide : ( 13.0 U.S. gallons / 49.2 litres )
According to the 2009 Ford Focus Owner Guide : ( 13.0 U.S. gallons / 49.2 liters )
Dirty fuel filter??