The Jeep Grand Cherokee WK, produced from 2005 to 2010, represented a significant leap forward for the iconic American SUV. The 5.7i V8 variant, available from 2009-2010, was positioned as the premium engine option within the third-generation Grand Cherokee lineup. Offering substantial power and a refined driving experience, it catered to buyers seeking a capable and luxurious SUV. This model year marked a transition period for the WK, bridging the gap to the fully redesigned fourth-generation model.
Technical Specifications
| Brand | Jeep |
| Model | Grand Cherokee |
| Generation | Grand Cherokee III (WK) |
| Type (Engine) | 5.7i V8 (362 Hp) Automatic |
| Start of production | 2009 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 16.8 l/100 km (14 US mpg, 16.8 UK mpg, 6 km/l) |
| Fuel consumption (extra urban) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg, 8.5 km/l) |
| Fuel consumption (combined) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg, 6.8 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 5.8 kg/Hp, 173.4 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 252.4 Nm/tonne |
| Power | 362 Hp @ 5200 rpm |
| Power per litre | 64 Hp/l |
| Torque | 527 Nm @ 4350 rpm (388.7 lb.-ft. @ 4350 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EZD |
| Engine displacement | 5654 cm3 (345.03 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 99.5 mm (3.92 in.) |
| Piston Stroke | 90.9 mm (3.58 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 6.6 l (6.97 US qt | 5.81 UK qt) |
| Coolant capacity | 14.4 l (15.22 US qt | 12.67 UK qt) |
| Kerb Weight | 2088 kg (4603.25 lbs.) |
| Max. weight | 2727 kg (6012.01 lbs.) |
| Max load | 639 kg (1408.75 lbs.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 4775 mm (187.99 in.) |
| Width | 1861 mm (73.27 in.) |
| Height | 1749 mm (68.86 in.) |
| Wheelbase | 2781 mm (109.49 in.) |
| Front track | 1575 mm (62.01 in.) |
| Rear track | 1575 mm (62.01 in.) |
| Ride height (ground clearance) | 210 mm (8.27 in.) |
| Drag coefficient (Cd) | 0.41 |
| Minimum turning circle | 11.3 m (37.07 ft.) |
| Approach angle | 32.3° |
| Departure angle | 27.5° |
| Ramp-over angle | 20.4° |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 245/60 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
The heart of the 5.7i Grand Cherokee is the EZD engine, a 5.7-liter (345 cubic inch) V8. This engine is a member of Chrysler’s HEMI family, known for its overhead valve (OHV) configuration and robust construction. The EZD features multi-port fuel injection, delivering fuel directly into the intake ports, and utilizes a variable valve timing (VVT) system to optimize performance and efficiency across the rev range. The V8 produces 362 horsepower at 5,200 rpm and 388 lb-ft of torque at 4,350 rpm. This power is channeled through a five-speed automatic transmission, a Chrysler-built unit known for its smooth shifts and durability. The transmission is geared towards providing a balance of acceleration and highway cruising ability.
Driving Characteristics
The 5.7L V8 and five-speed automatic combination delivers a noticeably different driving experience compared to the lower-displacement engines offered in the WK Grand Cherokee. Acceleration is brisk, allowing for confident merging and overtaking maneuvers. While not a sports car, the 5.7L provides ample power for towing and off-road excursions. The automatic transmission’s gear ratios are tuned for everyday usability, with a focus on smooth transitions rather than aggressive downshifts. Compared to the 3.7L V6, the 5.7L offers significantly more power and torque, but at the expense of fuel economy. The 5.7L also feels more composed when fully loaded with passengers or cargo. The 5-speed automatic, while reliable, lacks the efficiency and responsiveness of more modern transmissions with six or eight speeds.
Equipment & Trim Levels
The 5.7i V8 was typically offered in higher trim levels, such as the Limited and Overland. Standard features included leather upholstery, heated front seats, a premium sound system, and automatic climate control. The Overland trim added features like wood trim, upgraded leather, and a navigation system. Optional extras included a rear-seat entertainment system, power-adjustable pedals, and a sunroof. The 5.7L models also often included features like automatic headlights, rain-sensing wipers, and a universal garage door opener as standard equipment.
Chassis & Braking
The Grand Cherokee WK utilizes an independent front suspension and a multi-link rear suspension, providing a comfortable ride and capable handling. The 5.7i models generally featured larger stabilizer bars compared to the V6 versions, reducing body roll during cornering. Braking duties are handled by ventilated discs on all four wheels, coupled with an Anti-lock Braking System (ABS). The braking system is adequately sized for the vehicle’s weight and power, providing confident stopping performance. The rear suspension on some models utilized drum brakes, while higher trims often featured rear disc brakes.
Market Reception & Comparison
Critics generally praised the 5.7i Grand Cherokee for its powerful engine and refined driving experience. However, fuel economy was a common concern, as the V8 engine consumes significantly more fuel than the V6 options. Compared to competitors like the Chevrolet Tahoe and Ford Expedition, the Grand Cherokee offered a more luxurious interior and a more engaging driving experience. The 5.7L variant was often seen as a strong value proposition for buyers who prioritized performance and capability over fuel efficiency. Reliability was generally good, although some owners reported issues with the electronic stability control system.
Legacy
The 5.7i V8 Grand Cherokee WK remains a popular choice in the used car market, particularly among buyers seeking a capable and comfortable SUV with a powerful engine. The HEMI V8 is known for its durability and relatively straightforward maintenance. While fuel economy is not its strong suit, the 5.7L engine provides a satisfying driving experience and ample power for towing and off-road adventures. Parts availability is generally good, and the vehicle’s robust construction ensures that many examples are still on the road today. The EZD engine, while not the most technologically advanced, has proven to be a reliable and long-lasting powerplant.
