That depends: On my 1.8 L engine I have 800,000 Km. But the care has been VERY well maintained. 250,000 Km is very achievable. If the car is not well maintained expect it to cost you serious $$$$ just to keep it running. VWs like regular service and if neglected they will crush your pocketbook.
The 2005 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.
The 2012 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.
The 2010 Volkswagen Jetta's engine produces 170 hp @ 5700 rpm.
The 2013 Volkswagen Jetta's engine produces 115 hp @ 5000 rpm.
The 2004 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.
The 2003 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.
The 2009 Volkswagen Jetta's engine produces 170 hp @ 5700 rpm.
The 2001 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.
The 2002 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.
The 2007 Volkswagen Jetta's engine produces 150 hp @ 5000 rpm.
The 2006 Volkswagen Jetta's engine produces 150 hp @ 5000 rpm.
The 2014 Volkswagen Jetta's engine produces 115 hp @ 5200 rpm.