As a proud owner of the Jeep Grand Cherokee Trackhawk, you expect nothing less than blistering performance from its supercharged 6.2-liter V8 engine. Advertised to unleash a staggering 707 horsepower and 645 lb-ft of torque, the Trackhawk stands as a monument of American muscle and SUV capability. However, some Trackhawk owners are reporting a concerning issue: their vehicles might not be delivering the advertised horsepower.
One such owner, a long-time enthusiast of high-performance Mopar vehicles and member of the Hellcat community, recently shared his experience with a brand new 2018 Jeep Grand Cherokee Trackhawk. Having previously owned a 2015 Dodge Charger Hellcat, he was familiar with the raw power of the Hellcat engine. Excited about his new Trackhawk, he quickly noticed something amiss.
“Under Wide Open Throttle I noticed a cap in power and continued acceleration after about 75MPH,” he reports. While acknowledging the Trackhawk’s heft and less-than-aerodynamic profile compared to its Charger Hellcat sibling, he felt the acceleration should be significantly stronger, especially at higher speeds. This suspicion was further reinforced by his brother, a Jeep Grand Cherokee SRT 6.4L owner, who remarked that the Trackhawk didn’t feel dramatically quicker than his SRT during rolling pulls above 60 mph.
Seeking concrete evidence, the owner turned to the Trackhawk’s performance pages, utilizing the dyno screen feature during launch mode and wide-open throttle tests. The results were revealing and concerning.
Trackhawk Performance Pages Dyno Screen Showing HP and Torque Readings
His tests showed a consistent pattern. In normal drive mode with Eco mode engaged, the horsepower capped around 500 HP, as expected. However, even in Track Mode, designed to unleash the full potential of the engine, the dyno readings barely exceeded 600 HP. Pull after pull, whether in automatic or manual paddle-shifting mode, the Trackhawk consistently flat-lined at approximately 600 HP and 600 lb-ft of torque. These tests were conducted in relatively warm ambient air temperatures of 82°F and near sea level, conditions that shouldn’t drastically impact engine performance.
This is in stark contrast to his previous experience with a 2015 Charger Hellcat, which consistently displayed horsepower figures exceeding 700 HP on the performance pages during similar wide-open throttle runs. The owner is now seeking answers and reaching out to the Trackhawk community to determine if this is an isolated incident or a more widespread issue affecting other vehicles. He has contacted his local Jeep dealer, who, while helpful, is currently unsure of how to address the potential power deficit.
The question remains: are other Trackhawk owners experiencing similar horsepower limitations? If you own a Jeep Grand Cherokee Trackhawk, have you monitored your performance pages during hard acceleration? Are you seeing dyno readings consistently hitting or exceeding the advertised 707 HP mark? Sharing your experiences and dyno screenshots could help shed light on this potential “Trackhawk Hp” mystery and assist owners in seeking appropriate solutions. For a vehicle priced and marketed on its unparalleled power, ensuring it delivers the promised performance is paramount.
