The Jeep Grand Cherokee III (WK) 4.7i V8 Automatic, produced from 2005 to 2007, represented a significant step forward for the iconic American SUV. Falling within the WK generation (2005-2010), this variant occupied a mid-range position in the Grand Cherokee lineup, offering a balance between performance and affordability. It served as a key offering in the North American market, where large SUVs remained highly popular, providing a more accessible V8 option compared to the higher-trim Limited and Overland models. The 4.7i V8 Automatic aimed to deliver the traditional Jeep capability with a more refined driving experience than the base inline-six engine.
Technical Specifications
| Brand | Jeep |
| Model | Grand Cherokee |
| Generation | Grand Cherokee III (WK) |
| Type (Engine) | 4.7i V8 (238 Hp) 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) |
| Weight-to-power ratio | 8.3 kg/Hp, 120.1 Hp/tonne |
| Weight-to-torque ratio | 4.8 kg/Nm, 209 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 | 1981 kg (4367.36 lbs.) |
| Max. weight | 2726 kg (6009.8 lbs.) |
| Max load | 745 kg (1642.44 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 | 11.3 m (37.07 ft.) |
| Approach angle | 34.1° |
| Departure angle | 27.1° |
| Ramp-over angle | 20.6° |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
| 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 4.7i variant was the Chrysler-developed 4.7-liter V8 engine, internally designated as the EVA engine code. This engine featured a cast iron block with aluminum cylinder heads, a single overhead camshaft (SOHC) valvetrain operating two valves per cylinder, and a multi-port fuel injection system. The 4.7L V8 was known for its relatively simple design, contributing to its overall reliability. The engine produced 238 horsepower at 4500 rpm and 305 lb-ft of torque at 3600 rpm. Paired with this engine was a five-speed automatic transmission, providing smooth shifts and adequate performance for everyday driving. This transmission was designed to handle the V8’s torque output and provide a comfortable driving experience.
Driving Characteristics
The 4.7i V8 Automatic Grand Cherokee offered a noticeable step up in performance compared to the base 3.7L inline-six engine. While not as quick as the higher-output 5.7L Hemi V8, the 4.7L provided sufficient power for merging onto highways and towing moderate loads. The automatic transmission, while smooth, wasn’t particularly sporty, prioritizing comfort over aggressive shifting. The gear ratios were tuned for relaxed cruising and fuel efficiency, rather than outright acceleration. The rear-wheel-drive configuration contributed to a more traditional SUV feel, although four-wheel-drive versions were also available. The 4.7L engine delivered a characteristic V8 rumble, adding to the overall driving experience.
Equipment & Trim Levels
The 4.7i V8 Automatic typically came standard with features such as air conditioning, power windows and locks, a CD player, and cloth upholstery. Higher trim levels, like the Limited, added features such as leather upholstery, heated seats, a premium sound system, and automatic climate control. Optional extras included a sunroof, navigation system, and upgraded wheels. The interior design was functional and comfortable, with a focus on practicality rather than luxury. The dashboard layout was straightforward, with easy-to-use controls.
Chassis & Braking
The WK Grand Cherokee utilized a body-on-frame construction, providing a robust and durable platform. The suspension consisted of coil springs at all four corners, offering a comfortable ride quality. The front suspension featured an independent design, while the rear suspension was a solid axle setup. Braking duties were handled by ventilated discs at all four wheels, coupled with an Anti-lock Braking System (ABS) for enhanced safety. The braking system was adequate for the vehicle’s weight and performance, providing reliable stopping power in most conditions.
Market Reception & Comparison
The 4.7i V8 Automatic Grand Cherokee was generally well-received by critics as a capable and comfortable SUV. It offered a good balance between performance, features, and price. Compared to the base inline-six model, the 4.7L V8 provided a significant improvement in acceleration and towing capacity. However, it wasn’t as fuel-efficient as the six-cylinder engine. Compared to the 5.7L Hemi V8, the 4.7L offered a more affordable entry point into the V8 Grand Cherokee experience, albeit with less power. Reliability was generally considered good, although some owners reported issues with the automatic transmission over the long term.
Legacy
The 4.7L V8 engine, while eventually superseded by more modern powertrains, proved to be a relatively durable and reliable engine. Today, used WK Grand Cherokees with the 4.7L V8 are often sought after by buyers looking for a capable and affordable SUV. The engine’s simplicity and readily available parts contribute to its continued appeal. However, potential buyers should be aware of the possibility of transmission issues and perform a thorough inspection before purchasing. The 4.7i V8 Automatic Grand Cherokee remains a popular choice for those seeking a classic American SUV with a proven track record.
