The Lincoln Navigator III L 5.4i, produced from 2008 to 2014, represented the third generation of Lincoln’s full-size luxury SUV. Positioned as the flagship model for the brand, the Navigator competed directly with the Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon. The “L” designation indicated the extended wheelbase version, offering increased passenger and cargo space. This variant, equipped with the 5.4-liter Triton V8 engine and a six-speed automatic transmission, was a mainstay of the Navigator lineup, appealing to buyers seeking a powerful and spacious family vehicle with a focus on comfort and towing capability. It sat in the mid-to-upper range of the Navigator trims, offering a balance between luxury features and robust performance.
Technical Specifications
| Brand | Lincoln |
| Model | Navigator |
| Generation | Navigator III L |
| Type (Engine) | 5.4i V8 (310 Hp) 4×4 Automatic |
| Start of production | 2008 year |
| End of production | 2014 year |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 8 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 18.1 l/100 km (13 US mpg, 15.6 UK mpg, 5.5 km/l) |
| Fuel consumption (economy) – extra urban | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel consumption (economy) – combined | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 9.2 kg/Hp, 108.8 Hp/tonne |
| Weight-to-torque ratio | 5.8 kg/Nm, 173.8 Nm/tonne |
| Power | 310 Hp @ 5000 rpm |
| Power per litre | 57.3 Hp/l |
| Torque | 495 Nm @ 3600 rpm (365.09 lb.-ft. @ 3600 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 | 15.5 l (16.38 US qt | 13.64 UK qt) |
| Kerb Weight | 2848 kg (6278.77 lbs.) |
| Max. weight | 3583 kg (7899.16 lbs.) |
| Max load | 735 kg (1620.4 lbs.) |
| Trunk (boot) space – minimum | 1206 l (42.59 cu. ft.) |
| Trunk (boot) space – maximum | 3630 l (128.19 cu. ft.) |
| Fuel tank capacity | 127 l (33.55 US gal | 27.94 UK gal) |
| Length | 5672 mm (223.31 in.) |
| Width | 2002 mm (78.82 in.) |
| Width including mirrors | 2332 mm (91.81 in.) |
| Height | 1984 mm (78.11 in.) |
| Wheelbase | 3327 mm (130.98 in.) |
| Front track | 1699 mm (66.89 in.) |
| Rear (Back) track | 1702 mm (67.01 in.) |
| Ride height (ground clearance) | 231 mm (9.09 in.) |
| Drag coefficient (Cd) | 0.40 |
| Minimum turning circle (turning diameter) | 13.39 m (43.93 ft.) |
| Approach angle | 22.2° |
| Departure angle | 20.5° |
| Ramp-over (brakeover) angle | 18.4° |
| 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
The heart of the Navigator III L 5.4i was the 5.4-liter Triton V8 engine. This engine, part of Ford’s modular engine family, featured a cast-iron block with aluminum cylinder heads. The engine utilized a single overhead camshaft (SOHC) design per bank, with variable valve timing (VVT) to optimize performance and fuel efficiency. Fuel delivery was handled by a multi-port fuel injection system. The 5.4L Triton was known for its robust construction and relatively simple design, contributing to its longevity. The engine was mated to a six-speed automatic transmission, providing smooth shifts and adequate gear ratios for both highway cruising and towing. This transmission was designed to handle the engine’s substantial torque output.
Driving Characteristics
The 5.4-liter V8, producing 310 horsepower and 495 lb-ft of torque, provided ample power for the Navigator III L. While not a sports car, the Navigator offered brisk acceleration, especially considering its size and weight. The automatic transmission, while smooth, wasn’t particularly quick to downshift, resulting in a slightly less responsive feel compared to models equipped with the optional 4×4 with a lower gear ratio. The extended wheelbase of the “L” model contributed to a comfortable ride, absorbing bumps and imperfections in the road effectively. However, the Navigator’s large size and weight made it less agile in tight corners. Towing capacity was a significant strength, making it a popular choice for those needing to haul boats, trailers, or other large loads.
Equipment & Trim Levels
The Navigator III L 5.4i typically came standard with features such as leather upholstery, tri-zone automatic climate control, a premium audio system, power-adjustable front seats, and a rear entertainment system. Optional extras included power-folding running boards, a navigation system, and upgraded interior trim. The Navigator’s interior was designed with luxury and comfort in mind, offering a spacious cabin and high-quality materials. The extended wheelbase provided generous legroom for all three rows of passengers.
Chassis & Braking
The Navigator III L utilized a body-on-frame construction, providing a robust and durable platform. The suspension consisted of independent coil springs at all four corners, offering a comfortable ride. Braking duties were handled by ventilated discs at all four wheels, coupled with an anti-lock braking system (ABS) for enhanced safety. The Navigator’s substantial weight required a capable braking system to ensure adequate stopping power.
Market Reception & Comparison
The Navigator III L 5.4i received generally positive reviews, with critics praising its spacious interior, comfortable ride, and powerful engine. However, its fuel economy was a common criticism, as expected for a vehicle of its size and weight. Compared to the shorter-wheelbase Navigator, the “L” model offered significantly more cargo space and third-row legroom, making it a more practical choice for larger families. Against competitors like the Escalade and Yukon, the Navigator offered a comparable level of luxury and performance, often at a slightly lower price point.
Legacy
The 5.4-liter Triton V8, while known for its reliability, is susceptible to spark plug ejection issues if the plugs are not properly torqued during installation. Regular maintenance, including oil changes and transmission fluid flushes, is crucial for ensuring the longevity of this powertrain. Today, the Navigator III L 5.4i remains a popular choice in the used car market, particularly among those seeking a large, comfortable, and capable SUV. Its robust construction and relatively simple design make it a relatively affordable and reliable option compared to some of its more technologically advanced competitors.
