Doug DeMuro Reviews the 911 GT3RS 4.0 The 2011 Porsche 911 GT3RS 4.0 is one of the most desirable modern Porsche models. Today I’m reviewing the 911 GT3RS 4.0 to show you why the GT3RS 4.0 is so great — and why the Porsche 911 GT3RS 4.0 is so sought after.