The Ford Explorer IV, produced between 2006 and 2010, represented a significant evolution for Ford’s popular SUV. This fourth generation Explorer moved away from the body-on-frame construction of its predecessors to a more modern unibody platform, shared with the Ford Freestyle and Mercury Mountaineer. The 4.0 i V6 4WD variant, generating 212 horsepower, occupied a middle ground in the Explorer lineup, offering a balance between capability, fuel economy, and price. It served as a popular choice for families seeking a versatile vehicle with all-weather capability, particularly in regions experiencing inclement weather. This model year marked a shift towards more car-like handling and interior refinement for the Explorer, aiming to broaden its appeal beyond traditional truck-based SUV buyers.
Technical Specifications
| Brand | Ford |
| Model | Explorer |
| Generation | Explorer IV |
| Type (Engine) | 4.0 i V6 4WD (212 Hp) |
| Start of production | 2006 |
| End of production | 2010 |
| 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) |
| Fuel consumption (extra urban) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.2 sec |
| Acceleration 0 – 62 mph | 10.2 sec |
| Acceleration 0 – 60 mph | 9.7 sec |
| Maximum speed | 158 km/h (98.18 mph) |
| Weight-to-power ratio | 9.8 kg/Hp |
| Weight-to-torque ratio | 6 kg/Nm |
| Power | 212 Hp @ 5100 rpm |
| Torque | 344 Nm @ 3700 rpm (253.72 lb.-ft. @ 3700 rpm) |
| Engine layout | Front, Longitudinal |
| Engine displacement | 3998 cm3 (243.97 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 100.33 mm (3.95 in.) |
| Piston Stroke | 84.3 mm (3.32 in.) |
| Compression ratio | 9.7:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant capacity | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 2070 kg (4563.57 lbs.) |
| Max. weight | 2667 kg (5879.73 lbs.) |
| Max load | 597 kg (1316.16 lbs.) |
| Trunk (boot) space – minimum | 391 l (13.81 cu. ft.) |
| Trunk (boot) space – maximum | 2492 l (88 cu. ft.) |
| Fuel tank capacity | 85 l (22.45 US gal | 18.7 UK gal) |
| Length | 4813 mm (189.49 in.) |
| Width | 1832 mm (72.13 in.) |
| Height | 1814 mm (71.42 in.) |
| Wheelbase | 2890 mm (113.78 in.) |
| Front track | 1547 mm (60.91 in.) |
| Rear (Back) track | 1555 mm (61.22 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 5 |
| Gearbox type | Automatic transmission |
| Front suspension | Torsion |
| Rear suspension | Coil spring |
| Front brakes | Disc |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 235/70 R16 |
Powertrain & Engine Architecture
The heart of the Explorer IV 4.0 i 4WD is the 4.0-liter Cologne V6 engine. This engine, internally designated as the 4.0L OHV, is a naturally aspirated, 90-degree V6. It features a cast iron block and aluminum cylinder heads. The engine utilizes a multi-port fuel injection system, delivering fuel directly into the intake ports. The valvetrain consists of two valves per cylinder, operated by a single overhead camshaft. This configuration, while not the most modern, proved to be reliable and relatively simple to maintain. The 5-speed automatic transmission (5R55E) was the standard transmission for this variant. This transmission is known for its smooth shifting characteristics, but also for potential issues with torque converter failure in higher mileage examples. The 4×4 system employed an electronic shift-on-the-fly mechanism, allowing the driver to switch between 2WD and 4WD modes as needed.
Driving Characteristics
The 4.0L V6 and 5-speed automatic combination provided adequate, but not exhilarating, performance. Acceleration from 0-60 mph took around 9.7 seconds, making it competitive with other mid-size SUVs of the era. The automatic transmission’s gear ratios were tuned for everyday drivability rather than outright speed. While the engine delivered a respectable 344 Nm (253.72 lb-ft) of torque, the Explorer’s weight (2070 kg / 4563.57 lbs) limited its ability to feel particularly quick. Compared to the higher-output 4.6L V8 option, the 4.0L felt noticeably less powerful, especially when fully loaded or towing. However, the 4.0L offered better fuel economy than the V8, making it a more practical choice for many buyers. The unibody construction improved handling compared to previous Explorer generations, offering a more comfortable and controlled ride.
Equipment & Trim Levels
The 4.0 i V6 4WD Explorer typically came standard with features such as air conditioning, power windows and locks, a CD player, and cloth upholstery. Higher trim levels, such as the Limited, added features like leather upholstery, heated front seats, a premium sound system, and alloy wheels. Optional extras included a sunroof, navigation system, and a rear entertainment system. Safety features included ABS brakes and front airbags. The interior design was functional and family-oriented, with ample storage space and comfortable seating. The dashboard layout was straightforward and easy to use.
Chassis & Braking
The Explorer IV utilized an independent front suspension with torsion bars and a multi-link independent rear suspension with coil springs. This suspension setup provided a comfortable ride and decent handling characteristics. The braking system consisted of disc brakes on all four wheels, providing adequate stopping power for the vehicle’s weight. ABS was standard, enhancing braking performance in slippery conditions. The 4WD system contributed to improved traction in adverse weather conditions, making the Explorer a capable all-season vehicle.
Market Reception & Comparison
The Explorer IV 4.0 i V6 4WD was generally well-received by critics and consumers alike. It was praised for its comfortable ride, spacious interior, and improved handling compared to previous generations. However, some critics noted that the 4.0L V6 engine felt underpowered, especially when compared to the available V8. Fuel economy was considered average for its class. Compared to competitors like the Honda Pilot and Toyota Highlander, the Explorer offered a more rugged appearance and a more traditional SUV feel. The 4.0L variant was often seen as a good value proposition, offering a balance of features and affordability.
Legacy
The 4.0L V6 engine and 5R55E transmission combination, while generally reliable, are known to have some common issues as they age. Torque converter failure in the transmission is a frequent concern, and regular transmission fluid changes are crucial for preventative maintenance. The 4.0L engine itself is relatively durable, but can be prone to oil leaks and timing chain wear over time. Despite these potential issues, the Explorer IV 4.0 i 4WD remains a popular choice in the used car market, particularly for buyers seeking a capable and affordable SUV. Its robust construction and readily available parts make it a relatively easy vehicle to maintain and repair. The shift to a unibody platform and more refined interior marked a turning point for the Explorer, paving the way for future generations of the popular SUV.
