See a G 63 AMG Reach 187 MPH While Standing Still

As some Mercedes-AMG and/or G-Wagen aficionados know, the G 63 AMG is electronically-limited to 210 km/h (130 mph) for reasons that mainly revolve around the fact that any speed much higher than that would make it hazardous to both its passengers and the traffic members around it.

On top of that, with a drag coefficient of 0.56 – about the same as a small house – it would probably need even more horsepower than the insane amount it already has in order to achieve a much higher speed.

Keep in mind that it also weighs the better half of two and a half tons, so the 544 hp and the 760 Nm (561 lb ft) of torque developed by its twin-turbocharged, 5.5-liter V8 would probably need a reasonable bump.

Still, the original question remains, or at least it will until you check out the footage below. As you can tell, the video depicts a dyno test of a Mercedes-Benz G 63 AMG with some RENNtech sport mufflers and downpipes with integrated high flow catalytic converters.

According to RENNtech, the exhaust modifications bring in an extra 20 hp and 27 Nm (20 lb ft) of torque, but what is really interesting is that the car's top speed on the dyno is filmed, and it's quite a bit faster than we would have imagined.

The 187 mph (301 km/h) measured by the speedometer make the G 63 AMG about as fast as a much more slippery Porsche 911 Carrera S (991), which is flabbergasting to many of us.

The only question remaining is: Why did Mercedes-AMG provided the G 63 AMG with such a tall final gear since they were going to limit its top speed electronically anyway?