The Lincoln Navigator IV L, specifically the facelifted version introduced in August 2021 and continuing through the 2024 model year, represents the pinnacle of Lincoln’s full-size luxury SUV offerings. This iteration, powered by a 3.5-liter twin-turbocharged V6 engine producing 440 horsepower and paired with a 10-speed SelectShift automatic transmission and a four-wheel-drive system, aimed to compete directly with Cadillac Escalade, Jeep Grand Wagoneer, and other high-end American SUVs. The “L” designation signifies the extended wheelbase version, offering increased passenger and cargo space. This variant occupied the top tier of the Navigator lineup, offering a blend of power, luxury, and capability.
Technical Specifications
| Brand | Lincoln |
| Model | Navigator |
| Generation | Navigator IV L (facelift 2021) |
| Type (Engine) | 3.5 V6 (440 Hp) 4×4 SelectShift |
| Start of production | August, 2021 |
| End of production | 2024 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 8 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 6.2 kg/Hp, 160.2 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 251.5 Nm/tonne |
| Power | 440 Hp @ 5850 rpm |
| Power per litre | 126.1 Hp/l |
| Torque | 691 Nm @ 3000 rpm, 509.66 lb.-ft. @ 3000 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EcoBoost |
| Engine displacement | 3490 cm3, 212.97 cu. in. |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.46 mm, 3.64 in. |
| Piston Stroke | 86.61 mm, 3.41 in. |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Twin-Turbo, Intercooler |
| Valvetrain | TIVCST |
| Engine oil capacity | 5.7 l, 6.02 US qt | 5.02 UK qt |
| Coolant | 14.6 l, 15.43 US qt | 12.85 UK qt |
| Kerb Weight | 2747 kg, 6056.1 lbs |
| Trunk (boot) space – minimum | 971 l, 34.29 cu. ft |
| Trunk (boot) space – maximum | 3404 l, 120.21 cu. ft |
| Fuel tank capacity | 102 l, 26.95 US gal | 22.44 UK gal |
| Permitted trailer load with brakes (12%) | 3674 kg, 8099.78 lbs |
| Length | 5636 mm, 221.89 in |
| Width | 2029 mm, 79.88 in |
| Width with mirrors folded | 2123 mm, 83.58 in |
| Width including mirrors | 2383 mm, 93.82 in |
| Height | 1933 mm, 76.1 in |
| Wheelbase | 3343 mm, 131.61 in |
| Front track | 1717 mm, 67.6 in |
| Rear (Back) track | 1707 mm, 67.2 in |
| Front overhang | 970 mm, 38.19 in |
| Rear overhang | 1323 mm, 52.09 in |
| Ride height (ground clearance) | 244 mm, 9.61 in |
| Minimum turning circle (turning diameter) | 12.2 m, 40.03 ft |
| Approach angle | 22.4° |
| Departure angle | 20.7° |
| Ramp-over (brakeover) angle | 19.8° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 10 gears, automatic transmission SelectShift |
| Front suspension | Independent coil spring, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 350.52 mm |
| Rear brakes | Ventilated discs, 335.28 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 275/55 R20; 285/45 R22 |
| Wheel rims size | 20; 22 |
Powertrain & Engine Architecture
At the heart of the 2021-2024 Lincoln Navigator IV L is Ford’s 3.5-liter EcoBoost V6 engine. This engine, designated as part of the EcoBoost family, utilizes a twin-turbocharger setup to deliver substantial power and torque. The engine features direct fuel injection, a variable valve timing system (TIVCST – Twin Independent Variable Camshaft Timing with Stroke Technology), and a robust cast aluminum block. The 10-speed SelectShift automatic transmission, co-developed with General Motors, is a key component of this powertrain. This transmission offers a wide gear ratio spread, contributing to both fuel efficiency and responsive acceleration. The 4×4 system employs an electronically controlled clutch to engage the front wheels when needed, providing enhanced traction in various conditions.
Driving Characteristics
The 440 horsepower and 691 lb-ft of torque generated by this powertrain translate into strong acceleration and effortless cruising. The 10-speed transmission is well-tuned, providing smooth and quick shifts. While not as overtly sporty as some competitors, the Navigator prioritizes a comfortable and refined driving experience. The extended wheelbase of the “L” model contributes to a more stable ride, particularly at highway speeds. Compared to lower-trim Navigators with the standard-output EcoBoost engine, this 440 hp version offers a noticeable performance upgrade, especially when towing or carrying a full load of passengers. The automatic transmission, while convenient, doesn’t offer the same level of driver engagement as a manual transmission, but it’s well-suited to the Navigator’s luxury-focused character.
Equipment & Trim Levels
The Navigator IV L in this configuration typically came standard with a high level of equipment, including leather upholstery, heated and ventilated front seats, a premium sound system, a large touchscreen infotainment system with navigation, and a suite of advanced driver-assistance features such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras included a rear-seat entertainment system, massaging front seats, and a panoramic sunroof. The interior design emphasized luxury and spaciousness, with high-quality materials and meticulous attention to detail.
Chassis & Braking
The Navigator IV L features an independent rear suspension, which contributes to a smoother ride compared to older body-on-frame SUVs. The front suspension utilizes an independent coil spring setup with a transverse stabilizer bar. Braking duties are handled by ventilated discs on all four wheels, providing ample stopping power. The anti-lock braking system (ABS) is standard, enhancing safety and control. The Navigator’s substantial weight necessitates a robust braking system, and the ventilated discs effectively dissipate heat during repeated use.
Market Reception & Comparison
Critics generally praised the 2021-2024 Lincoln Navigator IV L for its spacious interior, luxurious features, and powerful engine. The 440 hp EcoBoost V6 was widely regarded as a strong performer, capable of handling both daily driving and demanding tasks such as towing. Fuel economy, however, was a common criticism, as expected for a vehicle of this size and weight. Compared to the standard-output Navigator, this variant offered a significant performance advantage, justifying the higher price tag for buyers prioritizing power and capability. Reliability reports have been generally positive, although some owners have reported minor issues with the infotainment system.
Legacy
The Lincoln Navigator IV L (2021-2024) with the 3.5-liter EcoBoost V6 and 10-speed automatic transmission represents a high point in Lincoln’s SUV development. The powertrain has proven to be relatively reliable, and the Navigator remains a popular choice in the used luxury SUV market. Its combination of power, luxury, and space continues to appeal to buyers seeking a premium full-size SUV. The EcoBoost engine, in particular, has established itself as a capable and efficient powerplant, and its widespread use across the Ford and Lincoln lineups ensures readily available parts and service.
