The Ford Expedition III (U324) 5.4L V8 4×4, produced from July 2008 to August 2014, represented a significant evolution in Ford’s full-size SUV lineup. Positioned as a mainstream offering within the third generation Expedition range, it served as a workhorse for families and those needing substantial towing capacity. This variant, equipped with the 5.4-liter Triton V8 engine and a six-speed automatic transmission, offered a balance between power, capability, and relative affordability compared to the higher-trim level models. It was a key player in the American full-size SUV market, competing directly with Chevrolet Tahoe and GMC Yukon.
Technical Specifications
| Brand | Ford |
| Model | Expedition |
| Generation | Expedition III (U324) |
| Type (Engine) | 5.4 V8 (310 Hp) 4×4 Flex Fuel Automatic |
| Start of production | July, 2008 |
| End of production | August, 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5-8 |
| Doors | 5 |
| Fuel consumption (economy) – urban (EPA) | 18.1 l/100 km (13 US mpg, 15.6 UK mpg, 5.5 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg, 7.6 km/l) |
| Fuel consumption (economy) – combined (EPA) | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 km/l) |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 8.5 kg/Hp, 118.2 Hp/tonne |
| Weight-to-torque ratio | 5.3 kg/Nm, 188.8 Nm/tonne |
| Power | 310 Hp @ 5100 rpm |
| Power per litre | 57.3 Hp/l |
| Torque | 495 Nm @ 3600 rpm (365.09 lb.-ft. @ 3600 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 | 105.8 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, VCT |
| 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 | 2622 kg (5780.52 lbs.) |
| Trunk (boot) space – minimum | 527 l (18.61 cu. ft.) |
| Trunk (boot) space – maximum | 3067 l (108.31 cu. ft.) |
| Fuel tank capacity | 106 l (28 US gal | 23.32 UK gal) |
| Permitted trailer load with brakes (12%) | 4082 kg (8999.27 lbs.) |
| Length | 5245 mm (206.5 in.) |
| Width | 2002 mm (78.82 in.) |
| Width with mirrors folded | 2024 mm (79.69 in.) |
| Width including mirrors | 2332 mm (91.81 in.) |
| Height | 1961 mm (77.2 in.) |
| Wheelbase | 3023 mm (119.02 in.) |
| Front track | 1702 mm (67.01 in.) |
| Rear (Back) track | 1707 mm (67.2 in.) |
| Front overhang | 996 mm (39.21 in.) |
| Rear overhang | 1227 mm (48.31 in.) |
| Ride height (ground clearance) | 221 mm (8.7 in.) |
| Approach angle | 22.6° |
| Departure angle | 21.5° |
| Ramp-over (brakeover) angle | 18.3° |
| 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 | 6 gears, automatic transmission |
| Front suspension | Coil spring, Double wishbone, Transverse stabilizer |
| Rear suspension | Independent multi-link spring suspension with stabilizer, Air Suspension – Optional |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 255/70 R18; 275/55 R20 |
| Wheel rims size | 18; 20 |
Powertrain & Engine Architecture
At the heart of this Expedition variant lies Ford’s 5.4-liter Triton V8 engine. This engine, designated with various codes throughout its production run, is a three-valve-per-cylinder, naturally aspirated powerplant. The 5.4L Triton utilized a cast iron block with aluminum cylinder heads, a configuration chosen for its durability and weight savings. Fuel delivery was managed by a multi-port fuel injection system, providing adequate atomization for efficient combustion. Variable Camshaft Timing (VCT) on the intake camshafts helped optimize performance across the rev range. The engine was mated to a six-speed automatic transmission (6F55E), known for its smooth shifting and ability to handle the engine’s torque output. This transmission featured electronic control and adaptive shifting algorithms. The Flex Fuel capability allowed the engine to run on gasoline or a blend of up to 85% ethanol (E85).
Driving Characteristics
The 5.4L V8, producing 310 horsepower and 495 lb-ft of torque, provided ample power for everyday driving and towing. However, compared to the later 6.2L V8 offered in the Expedition, the 5.4L felt less responsive, particularly when fully loaded. The six-speed automatic transmission was generally well-behaved, but could sometimes exhibit hesitant downshifts. The gear ratios were tuned for a balance of fuel economy and towing capability, rather than outright acceleration. In real-world conditions, the 0-60 mph time was typically in the 7.5-8.5 second range. Compared to manual transmission equipped Expeditions (which were rare), the automatic offered greater convenience but sacrificed some driver engagement. The 4×4 system provided confident traction in various weather conditions and off-road scenarios.
Equipment & Trim Levels
The 5.4L V8 4×4 typically came in the XLT and Limited trim levels. The XLT offered a good level of standard equipment, including cloth upholstery, air conditioning, power windows and locks, and a basic audio system. The Limited trim added leather upholstery, heated front seats, a premium audio system, and additional chrome exterior trim. Optional extras included a power-folding third-row seat, a rear-seat entertainment system, and a navigation system. The interior design was functional and spacious, prioritizing practicality over luxury.
Chassis & Braking
The Expedition III utilized a body-on-frame construction, providing a robust and durable platform. The front suspension featured an independent double wishbone setup with coil springs and a stabilizer bar. The rear suspension was initially a solid axle with coil springs and a stabilizer bar, but later models offered an optional independent multi-link suspension with air suspension for a smoother ride. Braking duties were handled by ventilated discs on all four wheels, coupled with an Anti-lock Braking System (ABS). The braking system was adequate for the vehicle’s weight, but could feel somewhat soft under heavy braking.
Market Reception & Comparison
The 5.4L V8 Expedition 4×4 was generally well-received by critics and consumers alike. It was praised for its spacious interior, comfortable ride, and strong towing capacity. However, fuel economy was a common criticism, as the 5.4L V8 was not particularly efficient. Compared to the 6.2L V8, the 5.4L offered a lower price point but less overall performance. The 5.4L also had a reputation for potential spark plug issues, requiring careful maintenance. Against competitors like the Chevrolet Tahoe and GMC Yukon, the Expedition offered a competitive package in terms of features and price.
Legacy
The 5.4L Triton V8-powered Expedition remains a popular choice in the used car market, particularly for those seeking a capable and affordable full-size SUV. While the engine is known for its durability, regular maintenance is crucial to prevent issues such as spark plug breakage and oil consumption. The 6F55E transmission is also generally reliable, but requires fluid changes at recommended intervals. Overall, the Expedition III 5.4L 4×4 represents a solid and dependable vehicle that continues to provide years of service for many owners.
