It depends on the miles( highway vs. city), how well its maintained and driven. Most vehicles should last (engine)175,000 - 250,000 miles before needing rebuild. The transmission(automatic) 100,000-150,000.
The 2013 Suzuki Grand-Vitara has 16 valves.
The 2009 Suzuki Grand-Vitara has 16 valves.
The 2008 Suzuki Grand-Vitara has 24 valves.
The 2010 Suzuki Grand-Vitara has 16 valves.
The 2005 Suzuki Grand-Vitara has 24 valves.
The 2007 Suzuki Grand-Vitara has 24 valves.
The 2011 Suzuki Grand-Vitara has 16 valves.
The 2002 Suzuki Grand-Vitara has 24 valves.
The 2006 Suzuki Grand-Vitara has 24 valves.
The 2004 Suzuki Grand-Vitara has 24 valves.
The 2003 Suzuki Grand-Vitara has 24 valves.
The 2012 Suzuki Grand-Vitara has 16 valves.