The Jeep Grand Cherokee III (WK) 4.7i V8 4×4 Automatic, produced from 2005 to 2007, represented a significant step forward for the iconic American SUV. Part of the WK generation (2005-2010), this variant occupied a middle ground in the Grand Cherokee lineup, offering a balance between capability, comfort, and price. It slotted above the base 3.7L V6 models and below the high-performance 5.7L HEMI V8, appealing to buyers seeking a robust engine with the convenience of an automatic transmission and four-wheel drive. The WK series marked a departure from the previous generation, introducing a fully independent front suspension for improved on-road handling and ride quality, while retaining the Grand Cherokee’s renowned off-road prowess.
Technical Specifications
| Brand | Jeep |
| Model | Grand Cherokee |
| Generation | Grand Cherokee III (WK) |
| Type (Engine) | 4.7i V8 (238 Hp) 4×4 Automatic |
| Start of production | 2005 |
| End of production | 2007 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 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) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg, 7.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 201 km/h (124.9 mph) |
| Weight-to-power ratio | 8.8 kg/Hp, 113.8 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 197.9 Nm/tonne |
| Power | 238 Hp @ 4500 rpm |
| Power per litre | 50.6 Hp/l |
| Torque | 414 Nm @ 3600 rpm (305.35 lb.-ft. @ 3600 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EVA |
| Engine displacement | 4701 cm3 (286.87 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 93 mm (3.66 in.) |
| Piston Stroke | 86.5 mm (3.41 in.) |
| Compression ratio | 9:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant capacity | 11.8 l (12.47 US qt | 10.38 UK qt) |
| Kerb Weight | 2092 kg (4612.07 lbs.) |
| Max. weight | 2767 kg (6100.19 lbs.) |
| Max load | 675 kg (1488.12 lbs.) |
| Trunk (boot) space – minimum | 977 l (34.5 cu. ft.) |
| Trunk (boot) space – maximum | 1909 l (67.42 cu. ft.) |
| Fuel tank capacity | 78 l (20.61 US gal | 17.16 UK gal) |
| Length | 4740 mm (186.61 in.) |
| Width | 1862 mm (73.31 in.) |
| Height | 1720 mm (67.72 in.) |
| Wheelbase | 2781 mm (109.49 in.) |
| Front track | 1575 mm (62.01 in.) |
| Rear (Back) track | 1575 mm (62.01 in.) |
| Ride height (ground clearance) | 204 mm (8.03 in.) |
| Drag coefficient (Cd) | 0.41 |
| Minimum turning circle (turning diameter) | 11.3 m (37.07 ft.) |
| Approach angle | 34.1° |
| Departure angle | 27.1° |
| Ramp-over (brakeover) angle | 20.6° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, 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 | 235/65 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
The heart of the Grand Cherokee 4.7i was the 4.7-liter (286.87 cubic inch) V8 engine, internally designated as the EVA engine code. This engine was a member of Chrysler’s second-generation small-block V8 family. It featured a cast iron block with aluminum cylinder heads, a single overhead camshaft (SOHC) valvetrain with two valves per cylinder, and a multi-port fuel injection system. The 4.7L V8 produced 238 horsepower at 4500 rpm and 305 lb-ft of torque at 3600 rpm. The engine’s relatively simple design contributed to its durability, but it wasn’t known for being particularly fuel-efficient. The automatic transmission paired with this engine was a 5-speed unit, providing smooth shifts and adequate performance for everyday driving. While not as sophisticated as some of the newer automatic transmissions available at the time, it was a reliable unit capable of handling the engine’s torque output.
Driving Characteristics
The 4.7L V8 with the 5-speed automatic offered a comfortable and capable driving experience. Acceleration was adequate, though not particularly brisk, with a 0-60 mph time estimated around 8.5 seconds. The automatic transmission’s gear ratios were tuned for everyday drivability rather than outright performance. Compared to the 3.7L V6, the 4.7L provided noticeably more power and torque, making it easier to accelerate, tow, and navigate hilly terrain. However, it lacked the responsiveness and higher top speed of the 5.7L HEMI V8. The four-wheel-drive system provided excellent traction in various conditions, making the Grand Cherokee a capable off-roader. The independent front suspension improved on-road handling compared to previous Grand Cherokee generations, reducing body roll and providing a more comfortable ride.
Equipment & Trim Levels
The 4.7i trim level typically included features such as air conditioning, power windows and locks, a CD player, and cloth upholstery. Optional extras included leather upholstery, a sunroof, a premium sound system, and a navigation system. The Laredo, Limited, and Overland trim levels offered increasing levels of luxury and features. The Limited trim, for example, often added features like heated seats, automatic climate control, and alloy wheels. The Overland trim represented the top-of-the-line model, offering the most luxurious appointments and advanced features.
Chassis & Braking
The WK Grand Cherokee featured a fully independent front suspension with coil springs and a multi-link rear suspension. This setup provided a significant improvement in ride quality and handling compared to the solid front axle used in previous generations. The braking system consisted of ventilated discs on all four wheels, providing adequate stopping power. An Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking situations. The chassis was designed to provide a balance between on-road comfort and off-road capability, with a robust frame and ample ground clearance.
Market Reception & Comparison
The Grand Cherokee 4.7i was generally well-received by critics and consumers. It was praised for its comfortable ride, spacious interior, and capable four-wheel-drive system. However, its fuel economy was often criticized, especially compared to newer SUVs with more advanced engine technology. Compared to the 3.7L V6, the 4.7L offered a significant performance upgrade, making it a more appealing option for buyers who needed extra power. Compared to the 5.7L HEMI, the 4.7L was more affordable and offered slightly better fuel economy, but it lacked the HEMI’s impressive acceleration and towing capacity.
Legacy
The 4.7L V8 engine, while not known for being a technological marvel, proved to be a relatively reliable powertrain. With proper maintenance, these engines can last for many years and miles. In the used car market, the Grand Cherokee 4.7i represents a good value for buyers seeking a capable and comfortable SUV. However, potential buyers should be aware of potential issues such as oil leaks and cooling system problems. Overall, the Jeep Grand Cherokee III (WK) 4.7i V8 4×4 Automatic remains a popular choice for those seeking a classic American SUV with a proven track record.
