The Grenadier owes some of its styling and heritage to the G-Wagon as well as the old Defender. At £125,000 for the diesel G-Wagon it can fairly be argued that there really is no fair comparison. However, bearing in mind both offer a 3.0 d litre diesel version, what makes the Mercedes so much more powerful and quicker than the BMW variant? Is it that they are aimed at different markets and the Mercedes has been tuned accordingly or is the Mercedes that much better?