It depends on the model. I have made a link to the Ford site giving the specifications for you - look in the related link below.
The 2004 Ford Focus is 5 ft. 6.9 in. (66.9 in.) wide.
The 2006 Ford Focus is 5 ft. 6.7 in. (66.7 in.)12V front power outlet(s) wide.
The 2010 Ford Focus is 5 ft. 7.8 in. (67.8 in.)12V front power outlet(s) wide.
The 2003 Ford Focus is 5 ft. 6.9 in. (66.9 in.)12V front power outlet(s) wide.
The 2011 Ford Focus is 5 ft. 7.8 in. (67.8 in.)12V front power outlet(s) wide.
The 2009 Ford Focus is 5 ft. 7.8 in. (67.8 in.)12V front power outlet(s) wide.
The 2001 Ford Focus is 5 ft. 6.9 in. (66.9 in.)12V front power outlet(s) wide.
The 2014 Ford Focus is 5 ft. 11.8 in. (71.8 in.)1 one-touch power windows wide.
The 2002 Ford Focus is 5 ft. 6.9 in. (66.9 in.)12V front power outlet(s) wide.
The 2012 Ford Focus is 5 ft. 11.8 in. (71.8 in.)1 one-touch power windows wide.
The 2008 Ford Focus is 5 ft. 7.9 in. (67.9 in.)12V front power outlet(s) wide.
The 2007 Ford Focus is 5 ft. 6.7 in. (66.7 in.)12V front power outlet(s) wide.