However, the GL350 does start to run out of reserve acceleration at interstate speeds.
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It has a more powerful version of the 3.0-liter V6 turbodiesel in the Mercedes GL350 Bluetec.
FORBES: 2012 Mercedes-Benz S350 Bluetec 4Matic
The R350 Bluetec uses the same 210-hp 3.0-liter V6 turbodiesel as the GL350 Bluetec.
FORBES: 2012 Mercedes-Benz R350 Bluetec 4Matic