The Lincoln Navigator III, specifically the 5.4i V8 (300 Hp) 4×4 Automatic variant, represents a significant iteration in Lincoln’s full-size SUV lineage. Produced from 2006 to 2008, this generation Navigator (designated as the third generation) built upon the success of its predecessors, offering a blend of luxury, capability, and American-style spaciousness. It shared its platform with the Ford Expedition, but distinguished itself through unique styling, a more refined interior, and a focus on providing a premium ownership experience. This particular trim level, equipped with the 5.4-liter V8 and automatic transmission, occupied a central position in the Navigator III lineup, offering a balance between performance and everyday usability.
Technical Specifications
| Brand | Lincoln |
| Model | Navigator |
| Generation | Navigator III |
| Type (Engine) | 5.4i V8 (300 Hp) 4×4 Automatic |
| Start of production | 2006 |
| End of production | 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 8 |
| Doors | 5 |
| Fuel consumption (urban) | 16.8 l/100 km (14 US mpg, 16.8 UK mpg) |
| Fuel consumption (extra urban) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9.2 kg/Hp (109 Hp/tonne) |
| Weight-to-torque ratio | 5.6 kg/Nm (179.8 Nm/tonne) |
| Power | 300 Hp @ 5000 rpm |
| Power per litre | 55.5 Hp/l |
| Torque | 495 Nm @ 3750 rpm (365.09 lb.-ft. @ 3750 rpm) |
| Maximum engine speed | 5400 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Triton |
| Engine displacement | 5408 cm3 (330.02 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 90.2 mm (3.55 in.) |
| Piston Stroke | 105.9 mm (4.17 in.) |
| Compression ratio | 9.8:1 |
| Number of valves per cylinder | 3 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | SOHC, VVT |
| Engine oil capacity | 6.6 l (6.97 US qt | 5.81 UK qt) |
| Coolant | 19.5 l (20.61 US qt | 17.16 UK qt) |
| Kerb Weight | 2753 kg (6069.33 lbs.) |
| Max. weight | 3538 kg (7799.95 lbs.) |
| Max load | 785 kg (1730.63 lbs.) |
| Trunk (boot) space – minimum | 513 l (18.12 cu. ft.) |
| Trunk (boot) space – maximum | 2925 l (103.3 cu. ft.) |
| Fuel tank capacity | 106 l (28 US gal | 23.32 UK gal) |
| Length | 5293 mm (208.39 in.) |
| Width | 2002 mm (78.82 in.) |
| Height | 1989 mm (78.31 in.) |
| Wheelbase | 3023 mm (119.02 in.) |
| Front track | 1700 mm (66.93 in.) |
| Rear (Back) track | 1702 mm (67.01 in.) |
| Ride height (ground clearance) | 228 mm (8.98 in.) |
| Drag coefficient (Cd) | 0.40 |
| Minimum turning circle (turning diameter) | 12.45 m (40.85 ft.) |
| Approach angle | 22.4° |
| Departure angle | 21.7° |
| Ramp-over (brakeover) angle | 19.2° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent coil spring |
| Rear suspension | Independent 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 | 255/70 R18 |
| Wheel rims size | 18 |
Powertrain & Engine Architecture
At the heart of the Navigator III 5.4i 4×4 Automatic lies Ford’s Triton 5.4-liter V8 engine. This engine, internally designated as the 3V (three valves per cylinder) version, produced 300 horsepower at 5000 rpm and 495 Newton-meters (365 lb-ft) of torque at 3750 rpm. The engine utilized a cast iron block with aluminum cylinder heads, a configuration chosen for its balance of durability and weight reduction. Fuel delivery was managed by a multi-port fuel injection system, providing precise fuel metering for optimal combustion. The engine also featured variable valve timing (VVT) on both intake and exhaust valves, enhancing both performance and fuel efficiency. The engine’s longitudinal mounting and front placement were standard for body-on-frame SUVs of this era. The powertrain was paired with a six-speed automatic transmission, a significant upgrade from the four-speed units found in earlier Navigators. This transmission offered smoother shifts and improved fuel economy compared to its predecessor.
Driving Characteristics
The 5.4-liter V8 and six-speed automatic combination in the Navigator III delivered a capable and comfortable driving experience. While not overtly sporty, the powertrain provided ample power for everyday driving and towing. Acceleration from a standstill was respectable, and the transmission’s gear ratios were well-suited for both city and highway driving. Compared to the Navigator models equipped with the smaller 4.6-liter V8, the 5.4-liter offered noticeably more power and torque, making it a better choice for those who frequently towed trailers or carried heavy loads. The automatic transmission, while smooth, wasn’t as responsive as a manual transmission, but it provided a more relaxed driving experience for most drivers. The 4×4 system provided enhanced traction in inclement weather or on unpaved surfaces.
Equipment & Trim Levels
The Navigator III 5.4i 4×4 Automatic typically came standard with a generous array of features, reflecting its luxury SUV positioning. These included leather upholstery, tri-zone automatic climate control, a premium audio system (often with a CD changer), power-adjustable front seats, and a power liftgate. Optional extras included a navigation system, rear-seat entertainment system, and upgraded wheels. The interior trim was generally well-appointed, with woodgrain accents and chrome detailing. The Navigator III offered a spacious cabin with seating for up to eight passengers, and the third-row seats could be folded flat to maximize cargo space.
Chassis & Braking
The Navigator III utilized a traditional body-on-frame construction, providing a robust and durable chassis. The suspension consisted of independent coil springs at all four corners, offering a comfortable ride quality. The rear brakes were ventilated discs, a step up from the drums found on some lower trim levels. The Navigator III was equipped with an anti-lock braking system (ABS) as standard, enhancing safety during emergency braking maneuvers. Steering was rack-and-pinion, providing precise and responsive handling.
Market Reception & Comparison
The Lincoln Navigator III was generally well-received by critics, who praised its spacious interior, comfortable ride, and powerful engine options. However, some reviewers noted its relatively poor fuel economy and large size. Compared to other full-size SUVs of the era, such as the Cadillac Escalade and Chevrolet Suburban, the Navigator III offered a compelling combination of luxury, capability, and value. The 5.4-liter V8 Automatic variant was considered a sweet spot in the lineup, offering a good balance between performance and fuel efficiency.
Legacy
The Lincoln Navigator III 5.4i V8 4×4 Automatic, while now a used vehicle, continues to be a popular choice for those seeking a large, comfortable, and capable SUV. The Triton 5.4-liter V8 engine, while known for its potential for spark plug issues and occasional timing chain wear, is generally considered a reliable powertrain when properly maintained. Parts availability remains good, and the Navigator III’s relatively simple mechanical design makes it relatively easy to repair. Today, these Navigators are often found being used for towing, family transportation, and as a comfortable and spacious alternative to smaller SUVs.
