Technical Specifications
| Brand | Jeep |
| Model | Grand Cherokee |
| Generation | Grand Cherokee IV (WK2, facelift 2017) |
| Type (Engine) | SRT 6.4 V8 (468 Hp) 4×4 Automatic |
| Start of production | 2017 |
| End of production | 2021 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 20.3-21.4 l/100 km (11.6 – 11 US mpg, 13.9 – 13.2 UK mpg, 4.9 – 4.7 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 9.6-10.7 l/100 km (24.5 – 22 US mpg, 29.4 – 26.4 UK mpg, 10.4 – 9.3 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 13.5-14.6 l/100 km (17.4 – 16.1 US mpg, 20.9 – 19.3 UK mpg, 7.4 – 6.8 km/l) |
| CO2 emissions (NEDC) | 315-338 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5 sec |
| Acceleration 0 – 62 mph | 5 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 257 km/h (159.69 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5 kg/Hp, 199.7 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 266.3 Nm/tonne |
| Power | 468 Hp @ 6250 rpm |
| Power per litre | 72.9 Hp/l |
| Torque | 624 Nm @ 4100 rpm (460.24 lb.-ft. @ 4100 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | HEMI / ESG |
| Engine displacement | 6417 cm3 (391.59 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.9 mm (4.09 in.) |
| Piston Stroke | 94.5 mm (3.72 in.) |
| Compression ratio | 10.9:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV, VVT |
| Engine oil capacity | 6.6 l (6.97 US qt | 5.81 UK qt) |
| Coolant | 15.5 l (16.38 US qt | 13.64 UK qt) |
| Kerb Weight | 2343-2383 kg (5165.43 – 5253.62 lbs.) |
| Max. weight | 2949 kg (6501.43 lbs.) |
| Max load | 566-606 kg (1247.82 – 1336 lbs.) |
| Trunk (boot) space – minimum | 800 l (28.25 cu. ft.) |
| Trunk (boot) space – maximum | 1689 l (59.65 cu. ft.) |
| Fuel tank capacity | 93.5 l (24.7 US gal | 20.57 UK gal) |
| Permitted trailer load with brakes (12%) | 2949 kg (6501.43 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4846 mm (190.79 in.) |
| Width | 1954 mm (76.93 in.) |
| Width including mirrors | 2156 mm (84.88 in.) |
| Height | 1749 mm (68.86 in.) |
| Wheelbase | 2914 mm (114.72 in.) |
| Front track | 1669 mm (65.71 in.) |
| Rear (Back) track | 1661 mm (65.39 in.) |
| Ride height (ground clearance) | 201 mm (7.91 in.) |
| Drag coefficient (Cd) | 0.37 |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 ft.) |
| Approach angle | 18.4° |
| Departure angle | 21.9° |
| Ramp-over (brakeover) angle | 17.8° |
| Wading depth | 508 mm (20 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives permanently the four wheels of the vehicle. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 380×34 mm |
| Rear brakes | Ventilated discs, 350×28 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 295/45 R20 |
| Wheel rims size | 10J x 20 |
The 2017-2021 Jeep Grand Cherokee SRT 6.4 V8 4×4 Automatic is a performance-oriented SUV that occupies the top position within the WK2 Grand Cherokee lineup. Following the mid-cycle refresh of the WK2 platform, the SRT model received subtle styling enhancements while continuing to deliver a potent blend of power, handling, and luxury. It was primarily targeted towards buyers in North America, where the demand for high-performance SUVs is particularly robust. The SRT aimed to bridge the gap between traditional luxury SUVs and dedicated sports cars, offering a versatile vehicle capable of both everyday commuting and exhilarating driving experiences.
Powertrain & Engine Architecture
The core of the SRT’s performance lies in its 6.4-liter (392 cubic inch) HEMI V8 engine, internally designated as the ESG code. This naturally aspirated engine generates 468 horsepower at 6,250 rpm and 624 lb-ft of torque at 4,100 rpm. The engine incorporates a multi-port fuel injection system and utilizes an overhead valve (OHV) valvetrain equipped with variable valve timing (VVT). A defining feature of the HEMI engine is its Fuel Saver Technology, a cylinder deactivation system that disables four cylinders during light-load cruising to enhance fuel efficiency. The engine is mounted longitudinally and is paired with an eight-speed automatic transmission sourced from ZF. This transmission is renowned for its smooth and quick shifts, coupled with a wide gear ratio spread, contributing to both rapid acceleration and improved fuel economy. The transmission is specifically calibrated for performance, featuring faster shift times and paddle shifters for manual gear selection.
Driving Characteristics
The SRT provides a distinctly different driving experience compared to other Grand Cherokee models. The 6.4-liter V8 delivers robust acceleration, achieving 0-60 mph in approximately 4.8 seconds. The eight-speed automatic transmission efficiently maintains the engine within its optimal power band, providing responsive shifts. The SRT also features a sport-tuned suspension, incorporating stiffer springs, dampers, and stabilizer bars. This results in reduced body roll and enhanced handling precision. The all-wheel-drive system is biased towards the rear wheels, further contributing to a sporty driving feel. While the ride is firmer than that of standard Grand Cherokees, it remains reasonably comfortable for daily use. The exhaust note is also more pronounced and aggressive, adding to the overall driving experience.
Equipment & Trim Levels
The SRT trim came standard with a comprehensive array of features, including leather upholstery with suede inserts, performance seats with enhanced bolstering, a flat-bottom steering wheel, and a premium audio system. Standard exterior features included unique SRT styling elements, such as a distinctive grille, body-color cladding, and prominent exhaust outlets. Optional extras included a dual-pane panoramic sunroof, adaptive cruise control, and a rear entertainment system. The interior typically featured aluminum trim accents and SRT-branded detailing.
Chassis & Braking
The SRT benefits from a reinforced chassis and upgraded suspension components designed to handle the increased power and performance. The front suspension utilizes coil springs and a double wishbone design, while the rear suspension employs an independent multi-link setup. Both ends are equipped with a transverse stabilizer bar. Braking performance is provided by high-performance Brembo brakes, featuring ventilated discs measuring 380mm at the front and 350mm at the rear. The SRT also incorporates an anti-lock braking system (ABS) and electronic stability control (ESC).
Market Reception & Comparison
The Jeep Grand Cherokee SRT generally received positive reviews from automotive critics, who lauded its powerful engine, responsive handling, and luxurious interior. However, its fuel economy was often noted as a drawback, which is typical for a vehicle of this size and performance capability. Compared to the standard Grand Cherokee models, the SRT offered a substantial performance upgrade but came with a higher price tag. It directly competed with performance SUVs such as the BMW X5 M, Porsche Cayenne, and Mercedes-Benz ML63 AMG. The SRT offered a more aggressive and sporty driving experience than many of its competitors, while still providing the practicality and versatility expected of an SUV.
Legacy
The 2017-2021 Jeep Grand Cherokee SRT 6.4 V8 4×4 Automatic continues to be a sought-after vehicle in the used car market, particularly among enthusiasts seeking a high-performance SUV. The 6.4-liter HEMI engine is generally regarded as reliable, although consistent maintenance is crucial. Common issues reported include potential oil consumption and occasional problems with the cylinder deactivation system. Overall, the SRT represents a compelling combination of performance, luxury, and capability, making it a desirable vehicle for those seeking a unique and engaging driving experience.
