What is it?
The Jeep Grand Cherokee SRT is the fastest and most powerful Jeep has ever produced, and it is utterly bonkers with it. Powered by a 6.4-litre Hemi engine that produces 461bhp and 460lb ft, it is the performance ‘halo’ model at the top of the American manufacturer’s Grand Cherokee range.
The SRT acronym denotes that the Grand Cherokee – which is great in standard form – has been worked over by Chrysler Group’s performance arm, Street and Racing Technology. The mission for SRT was to splice the performance and comfort of a high-class saloon with the all-wheel-drive practicality of an SUV.
The previous Grand Cherokee SRT had a 6.1-litre powerplant, which clearly wasn’t regarded as enough by Jeep. But the increase in capacity and performance isn’t the only change with this new Hemi. It also gets an active intake manifold and high-lift camshaft with cam phasing, which both help to optimise the power delivery across the rev range.
And although the Grand Cherokee SRT has the power to uproot mighty oaks, it also has one eye on hugging trees – a new ‘fuel saver’ system shuts off four of the eight cylinders when full power isn’t required. It’s an unobtrusive system – you only really notice due to the small ‘ECO’ symbol on the dash display. Still, this is by no means an eco-mobile, returning a claimed 20mpg on the combined cycle.