Flat out in the 2018 Jeep Grand Cherokee Trackhawk

WE LOVE a bit of empirical research here at Wheels, so we doff our ten-gallon hats to Texan tuner John Hennessey who has decided to see how fast a Jeep Grand Cherokee Trackhawk will go. Spoiler alert: 282km/h.

The 522kW behemoth is the most powerful SUV in the world, but even 868Nm of twist action has to cede to an impenetrable wall of physics at an indicated 175mph. Jeep quotes a 3.7 second sprint to 100km/h and, as you’ll see in the other video, the Trackhawk deploys its torque cleanly to leave a Challenger Hellcat vaporising its tyres in a sprint off the line.

Okay, so that’s still a little shy of Tesla’s 2.8 second claim for the Model X, but you don’t get a soundtrack like Zeus gargling a sack of hammers when you sign on Elon’s dotted line.

Hennessey offers even faster versions of the Trackhawk in either 635kW HPE850 or 755kW HPE1000 guises, the latter featuring a supercharger with 14psi of boost, 1314Nm @ 4200rpm, a 0-100km/h time of 2.8 seconds and a quarter mile time of 10.5 seconds. John Hennessey is 165cm tall.