The Jeep Grand Cherokee WK, produced from 2005 to 2010, represented a significant leap forward for the iconic American SUV. The 5.7i V8 4×4 Automatic variant, available from 2009-2010, was positioned as the premium offering within the third-generation Grand Cherokee lineup. It catered to buyers seeking a powerful, luxurious, and capable SUV with a focus on towing and all-weather performance. This model year marked a transition period for the WK, bridging the gap to the fully redesigned fourth-generation model. The 5.7L V8 was the top-tier engine choice, offering substantial horsepower and torque compared to the base 3.7L V6.
Technical Specifications
| Brand | Jeep |
| Model | Grand Cherokee |
| Generation | Grand Cherokee III (WK) |
| Type (Engine) | 5.7i V8 (352 Hp) 4×4 Automatic |
| Start of production | 2009 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 20.9 l/100 km (11.3 US mpg) |
| Fuel consumption (extra urban) | 11.5 l/100 km (20.5 US mpg) |
| Fuel consumption (combined) | 14.9 l/100 km (15.8 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.6 sec |
| Acceleration 0 – 62 mph | 7.6 sec |
| Acceleration 0 – 60 mph | 7.2 sec |
| Maximum speed | 208 km/h (129.25 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 6.2 kg/Hp |
| Weight-to-torque ratio | 4.2 kg/Nm |
| Power | 352 Hp @ 5400 rpm |
| Torque | 520 Nm @ 4200 rpm (383.53 lb.-ft. @ 4200 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 |
| 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 | 2175 kg (4795.05 lbs.) |
| Max. weight | 2750 kg (6062.71 lbs.) |
| Max load | 575 kg (1267.66 lbs.) |
| Fuel tank capacity | 80 l (21.13 US gal | 17.6 UK gal) |
| Length | 4750 mm (187.01 in.) |
| Width | 1870 mm (73.62 in.) |
| Height | 1740 mm (68.5 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) | 180 mm (7.09 in.) |
| Drag coefficient (Cd) | 0.41 |
| Minimum turning circle | 11.3 m (37.07 ft.) |
| Approach angle | 23.3° |
| Departure angle | 20° |
| Ramp-over angle | 20° |
| Drive wheel | All wheel drive (4×4) |
| 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 hemispherical combustion chambers and robust construction. The EZD features multi-port fuel injection and a two-valve-per-cylinder configuration. The engine produces 352 horsepower at 5400 rpm and 383 lb-ft of torque at 4200 rpm. This output is significantly higher than the base 3.7L V6, providing a substantial performance advantage. The engine is longitudinally mounted in the chassis. The 5-speed automatic transmission (545RFE) was specifically tuned to handle the V8’s power and torque, offering smooth shifts and responsive acceleration. The transmission features electronically controlled operation and a tow/haul mode for improved performance when towing trailers or navigating challenging terrain.
Driving Characteristics
The 5.7L V8 and automatic transmission combination delivers a noticeably different driving experience compared to the V6 or manual transmission options. Acceleration is brisk, with 0-60 mph times around 7.2 seconds. The automatic transmission provides smooth and seamless gear changes, making it ideal for everyday driving and long highway journeys. While not as engaging as a manual transmission, the automatic offers convenience and ease of use. The 4×4 system provides excellent traction in various conditions, making the Grand Cherokee a capable off-roader. The higher weight of the V8 engine does slightly impact handling compared to lighter trims, but the suspension is well-tuned to provide a comfortable and controlled ride.
Equipment & Trim Levels
The 5.7i trim typically included a generous array of standard features. These included leather upholstery, heated front seats, a premium sound system, automatic climate control, and power-adjustable pedals. Optional extras included a navigation system, rear-seat entertainment system, sunroof, and upgraded wheels. The interior design was focused on comfort and luxury, with high-quality materials and a user-friendly layout. The 5.7L models often featured unique exterior styling cues, such as chrome accents and larger wheels, to differentiate them from lower trims.
Chassis & Braking
The Grand Cherokee WK utilized a fully independent suspension system, providing a comfortable ride and good handling characteristics. The front suspension featured upper and lower control arms with coil springs and stabilizer bar, while the rear suspension employed a multi-link design with coil springs and a stabilizer bar. The 5.7i models were equipped with ventilated disc brakes on all four wheels, providing ample stopping power. An Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking situations.
Market Reception & Comparison
The 5.7i Grand Cherokee was generally well-received by automotive critics. It was praised for its powerful engine, luxurious interior, and capable 4×4 system. However, fuel economy was a common criticism, with the V8 engine consuming significantly more fuel than the V6. Compared to the base V6 model, the 5.7i offered a substantial performance upgrade but came at a higher price point. It also offered a more refined and luxurious driving experience. Compared to competitors like the Chevrolet Tahoe and Ford Expedition, the Grand Cherokee offered a more upscale interior and a more engaging driving experience.
Legacy
The 5.7L V8 engine in the WK Grand Cherokee has proven to be relatively reliable, although regular maintenance is crucial. Common issues include oil leaks and sensor failures. The 545RFE automatic transmission is also generally durable, but can be prone to issues if not properly maintained. Today, the 5.7i Grand Cherokee remains a popular choice in the used car market, particularly for buyers seeking a powerful and capable SUV. Its combination of performance, luxury, and off-road capability continues to appeal to a wide range of drivers. While fuel economy is a concern, the 5.7i Grand Cherokee offers a compelling package for those who prioritize power and capability.
