Let's be real for a moment and say people buying a Mercedes G-Class don't really care about fuel consumption. You're already paying $139,900 for a G550 or $179,000 for an AMG G63 in the United States, before options, so gas bills are not going to be much of an issue. Over in Europe and other markets, the German luxury brand has a thriftier inline-six diesel and there's even a four-cylinder gasoline model dubbed G350 in China.
