The revised 2014 Jeep Grand Cherokee goes on sale in the UK on 19th July, with an extended range, a new look, and a new eight-speed transmission.

The range now comprises Laredo, Limited, Limited Plus, Overland, Summit and SRT models.

The latter is powered by a stonking 6.4-litre V8 Hemi engine kicking out 461bhp at 6,250rpm and 624Nm of torque at 4,100rpm.  Mash the pedal into the carpet and it’ll hit 62mph in 5 seconds and keep on trucking until 160mph.

The V8 features Fuel Save Technology which shuts down four of the engine’s eight cylinders when less power is needed, but still has a 20.2mpg thirst on the combined cycle.  Emissions are a terrifying 327g/km.

The rest of the range is powered by the familiar 3.0-litre CRD V6 diesel, outputting 247bhp at 4,000rpm and 570Nm at a lowly 2,000rpm.  Fuel economy has improved to 37.7mpg on the combined cycle, while CO2 emissions drop to 198g/km.  Performance-wise, the 0-62mph sprint is done and dusted in 8.2 seconds, with a top whack of 126mph.

Unfortunately, the Laredo model has its power restricted to 188bhp and 440Nm, meaning 62mph arrives in 10.2 seconds and it’s all over by 119mph.

Both the V8 and V6 diesel use the same new eight-speed automatic transmission that has been optimised for reduced frictional losses and improved efficiency.  Steering wheel-mounted paddles allow the driver to change through the ratios manually, and there’s even a Launch Control system for the SRT model.

A new Eco Mode, which is selected by default when the vehicle is started, alters the shift pattern to boost fuel economy and also drops the air suspension (Overland and Summit models only) for improved aerodynamics.

On the outside, the new Grand Cherokee has been given a shorter front grille, slimmer headlights incorporating LED daytime running lights, and more pronounced fog lights. The headlights are Bi-xenon on all models, with the Summit and SRT benefiting from an adaptive system.

At the rear, the tail lights are now larger with LED illumination, while the bumper, tailgate and spoiler have been modified for aerodynamic efficiency and improved visibility.

The entry-level Laredo model has body-coloured door mirrors and handles, chrome headlight surrounds, and 18-inch five-spoke alloy wheels.  The Limited model adds chrome door handles and exhaust tips, and a chrome strip across the lower part of the front bumper.  Limited Plus adds 20-inch five-spoke alloy wheels, sports suspension and satellite navigation.

Overland replaces the chrome bumper strips with body-colour items, and adds body-colour wheel arch and bumper extensions, as well as 20-inch five-spoke polished alloy wheels with grey inners.

The range-topping Summit has a unique design to the lower sections of the bumpers and sills, as well as slimmer front fog lights. The wheel-arch mouldings are also larger than the other models, and there’s additional chrome trim for the side skirts.

Inside, there’s dual-zone climate control across the range, together with an electrically-adjusted steering column and a new instrument cluster with a user-configurable 7-inch colour display.

All but the Laredo get heated front and rear seats plus a heated steering wheel (which has a new design, and is part wood for the Overland and Summit models).

An updated Uconnect system with 8.4-inch touch-screen is standard on all models, while the Summit and SRT receive a 19-speaker Harmon Kardon hi-fi system with an incredible 825W.

The Laredo makes do with cloth seats, while Limited and up benefit from leather.  Overland models have the particularly classy-looking stitched leather to the dashboard and seats, a new open-pore wood dashboard trim, plus the option of two new interior colours schemes dubbed Vesuvio and Nepal.  The Summit has exclusive Natura-Plus leather seats with copper leather stitching and a suede-like material for the headliner and A-pillars.

Overland, Summit and SRT models also carry the twin-panel panoramic sunroof as standard.

To keep things moving in the rough stuff, Laredo, Limited and Limited Plus models drive all four wheels through Jeep’s Quadra-Trac II full-time 4WD system, with a two-speed transfer case that splits torque 50:50 between front and rear axles in normal use, but with the ability to transfer up to 100% of engine torque to either front or rear as necessary.

Overland and Summit models feature the Quadra-Drive II system, which adds a rear electronic limited-slip differential to direct torque across the axle whenever wheel slippage occurs.  The system is even capable of anticipating low-traction situations and can adjust the operation of the centre and rear differentials to prevent wheel slippage before it occurs.

Jeep’s Quadra-Lift air suspension system is standard on Overland and Summit models and allows the driver to adjust the vehicle’s height by up to 10cm using centre console-mounted controls.

Made in Detroit, the new 2014 Jeep Grand Cherokee goes on sale in the UK on 19th July, with prices starting from £36,995.

Jeep Grand Cherokee Pricing

Laredo: £36,995
Limited: £38,995
Limited Plus: £41,995
Overland: £45,695
Summit: £49,495
SRT: £59,995