2018 Jeep Grand Cherokee SRT Hellcat Horsepower: Unveiling the Untamed Power of a Super-SUV
2018 Jeep Grand Cherokee SRT Hellcat Horsepower: Unveiling the Untamed Power of a Super-SUV jeeps.truckstrend.com
The automotive world thrives on innovation, performance, and the relentless pursuit of power. In 2018, Jeep delivered a seismic shock to the SUV segment, unleashing a beast that redefined expectations for family haulers: the Grand Cherokee equipped with the legendary Hellcat engine. While often colloquially referred to as the "SRT Hellcat," it’s crucial to clarify that the 2018 Jeep Grand Cherokee packing the supercharged 6.2-liter HEMI V8 was officially branded as the Trackhawk. This vehicle wasn’t just another performance SUV; it was a testament to American engineering, blending luxurious utility with raw, unadulterated muscle car ferocity.
This article delves deep into the heart of what made the 2018 Jeep Grand Cherokee Trackhawk (and its Hellcat horsepower) so revolutionary. We’ll explore the specifics of its monumental power output, differentiate it from its SRT brethren, examine how Jeep managed to tame such an immense force, and provide insights for enthusiasts and potential owners alike. Understanding the horsepower of this vehicle isn’t just about a number; it’s about appreciating a marvel of engineering that allowed an SUV to sprint faster than many sports cars.
2018 Jeep Grand Cherokee SRT Hellcat Horsepower: Unveiling the Untamed Power of a Super-SUV
The Powerhouse Within: Unpacking the Hellcat Engine’s Horsepower
At the core of the 2018 Jeep Grand Cherokee Trackhawk’s astonishing performance lies the infamous supercharged 6.2-liter HEMI V8 engine. This isn’t just any V8; it’s a meticulously engineered powerplant designed to deliver explosive acceleration and relentless power. For its application in the Trackhawk, this engine churned out a staggering 707 horsepower (hp) at 6,000 RPM and an equally impressive 645 pound-feet (lb-ft) of torque at 4,800 RPM.
To put this into perspective, 707 horsepower was a figure previously reserved for exotic supercars or highly modified drag machines. In 2018, no other production SUV came close to matching this output. This immense power was achieved through a host of advanced technologies, including a twin-screw supercharger capable of forcing 11.6 PSI of boost into the cylinders, forged alloy pistons, high-strength connecting rods, and a robust crankshaft. Every component was designed to withstand the tremendous forces generated by such an engine, ensuring reliability even under extreme conditions.
The sheer volume of air and fuel consumed by this engine, coupled with its sophisticated control systems, allowed it to deliver power instantly across the rev range, translating directly into the Trackhawk’s blistering acceleration and astonishing top speed.
SRT vs. Trackhawk: Clarifying the Nomenclature
One of the most common points of confusion surrounding the high-performance Grand Cherokee lineup from 2018 is the distinction between the "SRT" and the "Trackhawk" (the one with the Hellcat engine). While both are performance-oriented Grand Cherokees developed by Fiat Chrysler Automobiles’ (FCA) Street and Racing Technology (SRT) division, they are fundamentally different vehicles, especially concerning horsepower.
2018 Jeep Grand Cherokee SRT: This model was powered by a naturally aspirated 6.4-liter HEMI V8 engine. While formidable in its own right, it produced 475 horsepower and 470 lb-ft of torque. It was a potent performance SUV, offering strong acceleration and handling capabilities, but it was a significant step down in power from the Hellcat-engined variant. The SRT was, and continues to be, a highly capable and respected performance SUV, but it does not possess the "Hellcat horsepower."
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2018 Jeep Grand Cherokee Trackhawk: This is the model that incorporated the supercharged 6.2-liter Hellcat engine, delivering the aforementioned 707 horsepower. It was positioned as the ultimate performance SUV, distinguished by unique badging, larger brakes, specific wheels, and a more aggressive stance, clearly signaling its superior power.
Therefore, when discussing "2018 Jeep Grand Cherokee SRT Hellcat Horsepower," it’s vital to understand that the "Hellcat horsepower" exclusively refers to the 707 hp found in the Trackhawk model, not the 475 hp of the standard SRT. The "SRT" branding simply indicates its development lineage under the SRT division.
Performance Metrics: Beyond Just Horsepower Numbers
While 707 horsepower is an impressive number on paper, its true significance is revealed in the Trackhawk’s real-world performance metrics. This is where the engineering brilliance of the Trackhawk truly shines, demonstrating how horsepower translates into astonishing speed for an SUV weighing over 5,300 pounds.
- 0-60 mph: The 2018 Jeep Grand Cherokee Trackhawk could rocket from 0 to 60 mph in a breathtaking 3.5 seconds. This time put it in contention with many high-performance sports cars and supercars of its era, firmly establishing it as one of the quickest SUVs ever produced.
- Quarter-Mile: It could complete the quarter-mile sprint in just 11.6 seconds at a trap speed of 116 mph. This is drag-strip-worthy performance straight from the factory.
- Top Speed: The Trackhawk boasted a top speed of 180 mph (290 km/h), a remarkable feat for a vehicle with its aerodynamic profile and weight.
- Braking: To rein in this immense power, the Trackhawk was equipped with massive Brembo brakes, featuring 15.75-inch front rotors with six-piston calipers and 13.78-inch rear rotors with four-piston calipers. It could stop from 60 mph in just 114 feet.
These figures underscore that the 707 horsepower wasn’t just for show; it was expertly harnessed by a robust drivetrain and chassis to deliver genuine, repeatable supercar-level performance in an SUV package.
Engineering Marvels: How Jeep Handled the Power
Successfully integrating 707 horsepower into an SUV requires more than just dropping in a powerful engine. Jeep’s engineers meticulously re-engineered critical components to ensure the Trackhawk could reliably handle and deploy its immense power.
- Drivetrain Reinforcement: The standard Grand Cherokee’s 8-speed automatic transmission was heavily fortified to handle the Hellcat engine’s massive torque output. The Quadra-Trac Active On-Demand 4×4 system was also upgraded, featuring a reinforced rear axle, a stronger driveshaft, and a robust limited-slip differential. This all-wheel-drive system was crucial for putting all 707 horsepower down efficiently without overwhelming the tires.
- Chassis and Suspension: The Trackhawk featured a stiffer suspension setup with adaptive damping, allowing it to maintain composure under hard acceleration and through corners. The chassis was reinforced in key areas to cope with the increased stresses of high-performance driving.
- Cooling System: Managing heat is paramount for supercharged engines. The Trackhawk received an enhanced cooling system, including a dedicated intercooler circuit for the supercharger, larger radiators, and improved airflow to prevent heat soak during spirited driving.
- Launch Control: To achieve its incredible 0-60 mph times, the Trackhawk was equipped with a sophisticated launch control system, optimizing engine output, transmission shifts, and torque distribution to ensure maximum traction and minimal wheelspin off the line.
These comprehensive engineering upgrades ensured that the 707 horsepower was not only accessible but also controllable and durable, making the Trackhawk a truly remarkable piece of automotive engineering.
Living with 707 HP: Practical Considerations and Ownership
Owning a vehicle with 707 horsepower like the 2018 Jeep Grand Cherokee Trackhawk comes with a unique set of considerations beyond just the thrill of acceleration.
- Fuel Economy: Unsurprisingly, a supercharged 6.2-liter V8 delivering 707 horsepower is thirsty. Owners should expect significantly lower fuel efficiency compared to standard SUVs, typically in the low teens (MPG). This is a direct consequence of the power it generates.
- Maintenance: Regular maintenance is crucial. The high-performance nature of the engine and drivetrain means that oil changes, fluid checks, and general inspections are paramount. Components like spark plugs and supercharger belts may also require more frequent attention than in conventional vehicles.
- Tires: The Trackhawk comes with high-performance all-season or summer tires designed to handle its power. Due to the vehicle’s weight and power, tire wear can be accelerated, especially with enthusiastic driving. Replacing these specialized tires can be costly.
- Insurance: Given its high performance, high MSRP, and potential for high repair costs, insurance premiums for the Trackhawk are generally higher than for a standard Grand Cherokee.
- Driving Dynamics: While incredibly powerful, the Trackhawk remains an SUV. Its high center of gravity means it won’t handle like a dedicated sports car, though its advanced suspension and AWD system do an admirable job of managing its bulk. Drivers must respect its power and weight, especially in adverse conditions.
- Aftermarket Modifications: While the 707 hp is impressive, some owners may seek even more power. The Hellcat engine is highly tunable, with many aftermarket options available to push output beyond 800 or even 1000 hp. However, such modifications can void warranties, stress stock components beyond their design limits, and potentially compromise reliability and longevity. It’s crucial to consult with reputable tuners and understand the risks involved.
Unleashing the Horsepower: Tips for Performance Driving
For those who own or get the chance to drive a 2018 Grand Cherokee Trackhawk, maximizing its 707 horsepower safely requires a few tips:
- Utilize Launch Control: For the fastest acceleration, engage the launch control system. Follow the vehicle’s instructions (e.g., firm brake pressure, full throttle, then release brake) for optimal starts.
- Select Drive Modes: The Trackhawk offers various drive modes (e.g., Auto, Sport, Track, Tow, Snow) that adjust throttle response, transmission shift points, suspension damping, and AWD torque distribution. "Track" mode will unleash the full 707 horsepower and stiffen the suspension for maximum performance on a closed course.
- Proper Tire Pressure: Maintain correct tire pressure, especially before performance driving, to ensure optimal grip and handling.
- Warm Up: Allow the engine and drivetrain fluids to reach optimal operating temperature before engaging in spirited driving.
- Closed Course Only: Always explore the limits of the 707 horsepower on a racetrack or a safe, closed course. Public roads are not the place for such extreme performance.
Concluding Summary: The Enduring Legacy of 707 Horsepower
The 2018 Jeep Grand Cherokee Trackhawk, with its iconic 707 Hellcat horsepower, stands as a landmark vehicle in automotive history. It shattered perceptions of what an SUV could be, blending family utility with supercar-rivalling acceleration and power. While the moniker "SRT Hellcat" is often used interchangeably, it’s the Trackhawk that truly embodied the spirit of extreme performance with its supercharged engine.
This vehicle represented a bold statement from Jeep: that power, luxury, and versatility could coexist in a single, formidable package. The 707 horsepower wasn’t just a number; it was a promise of an exhilarating driving experience, backed by robust engineering and a legacy of American muscle. For enthusiasts, the 2018 Trackhawk remains a highly sought-after machine, a true Hellcat-powered SUV that continues to impress with its raw power and surprising capability.
2018 Jeep Grand Cherokee Trackhawk (Hellcat Horsepower) – Price & Key Specifications
| Feature | 2018 Jeep Grand Cherokee Trackhawk (Hellcat Engine) | 2018 Jeep Grand Cherokee SRT (Comparison) |
|---|---|---|
| Engine Type | Supercharged 6.2L HEMI V8 | Naturally Aspirated 6.4L HEMI V8 |
| Horsepower | 707 hp @ 6,000 RPM | 475 hp @ 6,000 RPM |
| Torque | 645 lb-ft @ 4,800 RPM | 470 lb-ft @ 4,300 RPM |
| 0-60 mph | 3.5 seconds | 4.8 seconds |
| 1/4 Mile Time | 11.6 seconds @ 116 mph | 13.3 seconds @ 103 mph |
| Top Speed | 180 mph (290 km/h) | 160 mph (257 km/h) |
| Transmission | 8-speed Automatic (ZF 8HP95) | 8-speed Automatic (ZF 8HP70) |
| Drivetrain | Quadra-Trac Active On-Demand 4×4 (AWD) | Quadra-Trac Active On-Demand 4×4 (AWD) |
| Curb Weight | ~5,363 lbs (2,433 kg) | ~5,150 lbs (2,336 kg) |
| Brakes (Front) | Brembo 15.75-inch (400mm) 6-piston | Brembo 15.0-inch (380mm) 6-piston |
| MSRP (Approx. New) | $85,900 USD | $67,995 USD |
| Used Price Range (2024) | $45,000 – $75,000+ (Varies by condition, mileage, location) | $30,000 – $50,000+ (Varies by condition, mileage, location) |
Note: MSRP is the manufacturer’s suggested retail price for the base model at launch. Used prices are estimates and can fluctuate significantly based on market demand, vehicle condition, mileage, and optional features.
Frequently Asked Questions (FAQ) about 2018 Jeep Grand Cherokee SRT Hellcat Horsepower
Q1: Was there actually a 2018 Jeep Grand Cherokee "SRT Hellcat"?
A1: No, officially, the 2018 Jeep Grand Cherokee with the Hellcat engine was called the Trackhawk. The "SRT" was a separate, less powerful model within the Grand Cherokee lineup for that year. However, due to the Hellcat engine being developed by SRT, the "SRT Hellcat" moniker is often colloquially used.
Q2: How much horsepower did the 2018 Jeep Grand Cherokee Trackhawk have?
A2: The 2018 Jeep Grand Cherokee Trackhawk produced 707 horsepower and 645 lb-ft of torque from its supercharged 6.2-liter HEMI V8 engine.
Q3: What’s the difference between the 2018 Grand Cherokee SRT and the Trackhawk’s horsepower?
A3: The 2018 Grand Cherokee SRT had 475 horsepower from a naturally aspirated 6.4-liter HEMI V8. The Trackhawk, in contrast, had 707 horsepower from a supercharged 6.2-liter HEMI V8 (the Hellcat engine).
Q4: How fast is the 2018 Trackhawk from 0-60 mph?
A4: The 2018 Jeep Grand Cherokee Trackhawk can accelerate from 0 to 60 mph in just 3.5 seconds.
Q5: What kind of fuel does the 707 hp Hellcat engine require?
A5: Jeep recommends premium 91+ octane gasoline for the supercharged Hellcat engine to achieve its full 707 horsepower and maintain optimal performance and longevity.
Q6: Can the 2018 Trackhawk’s horsepower be increased?
A6: Yes, the Hellcat engine is known to be highly tunable. Aftermarket modifications like pulley upgrades, ECU tunes, and exhaust systems can increase horsepower significantly. However, these modifications can void the factory warranty and may reduce the long-term reliability of the vehicle if not done professionally and carefully.
Q7: Is the 707 horsepower manageable for daily driving?
A7: Despite its extreme power, the 2018 Trackhawk is surprisingly docile in normal driving conditions. The 8-speed automatic transmission is smooth, and the adaptive suspension can be set for comfort. However, the potential for instant, massive power is always present, requiring a respectful driving style.
Q8: What makes the Trackhawk able to handle so much horsepower?
A8: Jeep engineered the Trackhawk with numerous upgrades, including a reinforced drivetrain (transmission, transfer case, rear axle), a beefed-up chassis, upgraded cooling systems, and high-performance Brembo brakes, all designed to manage and deliver the 707 horsepower effectively and reliably.
