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I was wondering if anyone knew whether the top speed of the IS300 is governed... The GS300 has a top speed of 144 mph (ungoverned). The GS300 car weighs more than the IS and more importantly has a higher coefficient of drag and the top speed of the IS300 is 143mph.... hmmmmmmmm
Eric....
 

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Might be the different of gear ratios...
IS might have shorter ratio for better acceleration.
 

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Yep Erik it is indeed electronically governed at 143.7 mph. Where does anyone get to drive that fast???? At night on some highway? The GS is very calm to drive at 100mph but I'm always checking for the man and that gets my adrenaline pumping. Then some guy will pass you doing 130! We need an Autobahn.
 

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Damn straight, zerin! I-10 really kicks ass.
 
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