The Senate gave final approval Tuesday to legislation that would require gasoline in Missouri to contain 10 percent ethanol. KSMU's Missy Shelton reports from Jefferson City.
Supporters of the ethanol requirement say it will reduce the state's dependence on foreign oil.
Republican Senator John Cauthorn represents portions of Central Missouri and is sponsoring the ethanol bill.
The bill faced criticism from Republican Senator Matt Bartle of suburban Kansas City.
Bartle contends the ethanol requirement is like a tax because he says ethanol is less efficient.
While the bill sponsor acknowledged it's slightly less efficient in some cars, Cauthorn says over time it can improve your car's engine.
During debate, Bartle and Cauthorn sparred over the idea of imposing an ethanol mandate.
Bartle speaks first.
According to Republican Senator Dan Clemens of Webster County, families in Southwest Missouri want an ethanol mandate.
The ethanol mandate passed the senate by a vote of 26 to 7.
The House already has passed its own version of the bill. Lawmakers from the House and Senate will meet in conference committee to work out a compromise.