The two new models join a refreshed Model Year 2017 Jeep Grand Cherokee line-up, which is expected to arrive locally before the end of 2016.
The Grand Cherokee Trailhawk is the most capable off-road Grand Cherokee ever, according to Jeep, while the Grand Cherokee Summit is the most luxurious vehicle in the full-size SUV segment, also according to Jeep.
Grand Cherokee Trailhawk
The Grand Cherokee Trailhawk comes standard with a host of four-wheel drive equipment including Quadra-Drive II four-wheel drive system, a rear electronic limited slip differential, a bespoke version of Jeep's Quadra-Lift air suspension, skid plates, and an anti-glare bonnet decal.
The air suspension package has been tailored to the Trailhawk to allow improved articulation and extra suspension travel.
Front fascia can be removed for hardcore off-road driving, which increases the approach angle from 29.8 degrees to 36.1 degrees. The breakover angle sits at 27.1 degrees, with the departure angle measuring in at 22.8 degrees.
At the front, the Grand Cherokee Trailhawk features a new fascia that includes a seven-slot grille, which originally debuted on the Grand Cherokee 75th Anniversary edition, and red tow hooks on the front and rear.
There's also 18-inch alloy wheels (or optional 20-inch Goodyear Adventure off-road tyres with Kevlar reinforcement), Trail Rated badges, mirror caps and roof racks. Buyers can also option Mopar rock rails to really give the Trailhawk a mean image.
Inside the cabin, Jeep has gone to town on giving the Trailhawk rugged appeal. A unique black interior with leather and suede combination seats feature red accent stitching, while Piano Black appliques and gunmetal finishes feature on all interior painted parts.
Trailhawk badges team with an 8.4-inch Uconnect touchscreen that includes off-road pages that detail four-wheel drive controls and suspension settings.
The Trailhawk will be available in the following colours: Redline Red, Billet Silver, Bright White, Rhino, Granite Crystal, Velvet Red and Diamond Black Crystal.
Grand Cherokee Summit
Fittingly, it's the Grand Cherokee Summit that comes loaded to the hilt with features and gadgets.
In fact, it's so loaded that Jeep claims it's the most luxurious vehicle in the full-size SUV segment — a big call.
From the outside, the Summit comes with an updated front fascia, grille and LED fog lights, along with new 20-inch aluminium wheels.
The leather package features a full-wrap Laguna (just in case you didn't know — this means expensive leather) leather interior in one of four colour schemes, along with a Nappa leather wrapped dashboard, centre console and door panels.
The Summit's headliner is finished in suede, while the acoustic windshield teams with active noise cancellation, along with lane departure warning and parallel and perpendicular park assist.
In terms of mechanical hardware, the Summit comes with Jeep's Quadra-Drive II four-wheel drive system with an electronic limited slip differential. It also comes with Quadra-Lift air suspension and Selec-Speed Control.
The Summit will be available in the following colours: Light Brown Stone, True Blue, Bright White, Ivory Pearl, Granite Crystal, Velvet Red, Diamond Black Crystal and Luxury Brown exterior paints.
Engine details for both models are yet to be released, along with pricing, but we expect both variants to sit close to the top of the Grand Cherokee line-up.
Click on the Photos tab to see a full gallery of Jeep Grand Cherokee Trailhawk and Jeep Grand Cherokee Summit images.