Injected with an unmatched 707 horsepower courtesy of an awe-inspiring supercharged 6.2-litre V8 engine, the most awarded SUV ever and the most capable full-size SUV on the planet has been transformed into the quickest and most powerful ever.
The new benchmark 707bhp supercharged engine combines with an upgraded high-torque-capacity TorqueFlite 8-speed automatic transmission, world-class on-road driving dynamics and new Brembo brakes to deliver a new level of performance: 0-100 kilometres per hour (km/h) in 3.6 seconds, the quarter-mile in 11.6 seconds at 187km/h, top speed of 290km/h, 100-0km/h braking distance in about 36 metres, and 0.88 g capability on the skidpad.
Powering the 2018 Jeep Grand Cherokee Trackhawk is a supercharged 6.2-litre V8 engine delivering 707 horsepower and 875Nm of torque.
The breakthrough supercharged engine is designed and manufactured using only the strongest and most durable materials. Its cast-iron block features water jackets between the cylinders for optimal cooling. Its forged-steel crankshaft with induction-hardened bearing surfaces is so strong, it can withstand firing pressures of nearly 1600 psi (110 bar) – the equivalent of five family sedans standing on each piston, every two revolutions. The unique, specially tuned crankshaft damper has been burst-tested to 13,000rpm.
The performance of the 2018 Jeep Grand Cherokee Trackhawk is bolstered by various upgraded driveline components engineered to handle the additional torque output from the supercharged engine.
The standard TorqueFlite 8-speed automatic transmission delivers improved shift response, quality and consistent performance, and driveability. The transmission software takes into account variables such as engine torque gradients, kickdown events, longitudinal and lateral acceleration, grade changes, friction detection and downshift detection to determine the appropriate shift map.
New high-performance Brembo brakes include the largest standard front brakes ever offered on a Jeep vehicle – front 400mm two-piece vented rotors with 6-piston callipers painted with a new distinctive yellow finish and rear 350mm vented rotors with 4-piston yellow callipers, all for outstanding stopping performance, heat management and durability.
The new Brembo brakes bring the Grand Cherokee Trackhawk to a stop from 100km/h in about 36 metres. For added safety, the anti-lock braking, electronic stability control and traction systems have been uniquely tuned.
The 2018 Jeep Grand Cherokee Trackhawk rides one inch lower than non-SRT Grand Cherokee models and is further set apart with body-coloured wheel flares, side sill cladding and a sculpted hood with dual heat extractors.
The driver-focused interior features premium soft-touch materials, unique Light Black Chrome finishes and carbon fibre spears, and a 7-inch driver information display (DID) instrument cluster, which features the tachometer in the middle. The 321km/h speedometer is on the left side of the cluster.
The instrument panel centre stack with new 8.4-inch Uconnect touchscreen features Trackhawk-exclusive Performance Pages that showcase an array of performance timers and gauge readouts, including a new engine dynamometer screen that measures instantaneous horsepower, torque and current transmission gear. The dynamometer screen also includes a new snapshot function for owners to save their performance readouts on a USB. 
Read our Sibling Rivalry Group Test of Jeep’s Grand Cherokee SRT8 6.4 and Cherokee 2.4.
