The Ford Expedition III (U324) 5.4 V8 Flex Fuel Automatic, produced from July 2008 to August 2014, represented a significant evolution in Ford’s full-size SUV offerings. Positioned as a mainstream, high-capability trim within the third-generation Expedition lineup, it catered to buyers needing substantial towing capacity and passenger space without opting for the more luxurious EL extended-length models. This variant played a crucial role in maintaining Ford’s strong presence in the competitive American SUV market, appealing to families and those with active lifestyles. It was built on the U324 platform, sharing its underpinnings with the Lincoln Navigator of the same generation.
Technical Specifications
| Brand | Ford |
| Model | Expedition |
| Generation | Expedition III (U324) |
| Type (Engine) | 5.4 V8 (310 Hp) 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) | 16.8 l/100 km (14 US mpg, 16.8 UK mpg, 6 km/l) |
| Fuel consumption (economy) – extra urban (EPA) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg, 8.5 km/l) |
| Fuel consumption (economy) – combined (EPA) | 14.7 l/100 km (16 US mpg, 19.2 UK mpg, 6.8 km/l) |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 8.1 kg/Hp, 123.2 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 196.7 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 | 2517 kg (5549.04 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%) | 4172 kg (9197.69 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 | 22.8° |
| Departure angle | 21.4° |
| Ramp-over (brakeover) angle | 18.4° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| 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 | 265/70 R17; 255/70 R18; 275/55 R20 |
| Wheel rims size | 17; 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 design featuring a single overhead camshaft (SOHC) and variable valve timing (VCT). The multi-port fuel injection system delivers fuel to each cylinder, optimizing combustion for both gasoline and E85 ethanol blends, providing the “Flex Fuel” capability. The engine produces 310 horsepower at 5100 rpm and 495 Nm (365 lb-ft) of torque at 3600 rpm. The engine’s architecture is a 90-degree V-configuration, contributing to its relatively smooth operation. Paired with this engine is a six-speed automatic transmission, chosen for its balance of fuel efficiency and towing capability. This transmission features electronic control and overdrive, allowing for comfortable highway cruising.
Driving Characteristics
The 5.4L V8 and six-speed automatic combination in the Expedition offered a comfortable, if not particularly sporty, driving experience. Acceleration was adequate for everyday driving and highway merging, but the vehicle’s substantial weight (over 5,500 lbs) meant it wasn’t quick off the line. The automatic transmission was tuned for smooth shifts and prioritized fuel economy over aggressive performance. Compared to the later EcoBoost V6 options, this 5.4L felt less responsive. The gear ratios were optimized for towing, providing ample low-end torque. Manual shifting capability was available, but rarely utilized by most drivers. The rear-wheel-drive configuration provided a traditional SUV feel, while four-wheel-drive versions offered enhanced traction in inclement weather.
Equipment & Trim Levels
The 5.4L V8 Automatic trim typically fell into the mid-range of the Expedition lineup. Standard features included air conditioning, power windows and locks, a basic audio system, and cloth upholstery. Higher trim levels, such as the Limited, added leather upholstery, heated seats, a premium audio system, and advanced safety features. Optional extras included a DVD entertainment system, power-folding mirrors, and a sunroof. The interior design was functional and spacious, prioritizing practicality over luxury. The third-row seating could be configured as a bench seat or captain’s chairs, offering flexibility for passenger and cargo needs.
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 improved ride quality. 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 required a firm pedal input for effective stopping power.
Market Reception & Comparison
The 5.4L V8 Expedition received generally positive reviews for its spacious interior, towing capacity, and comfortable ride. However, critics noted its relatively poor fuel economy compared to newer SUVs. Compared to the smaller EcoBoost V6 models introduced later, the 5.4L offered less horsepower and torque, but provided a more traditional V8 sound and feel. The 5.4L was generally considered more reliable than some of the earlier iterations of the Triton engine, but still required regular maintenance to prevent issues such as spark plug breakage and oil consumption. Fuel economy averaged around 16 mpg combined, which was typical for a full-size SUV of that era.
Legacy
The Ford Expedition III 5.4L V8 Automatic 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 longevity, regular maintenance is crucial to prevent common issues. The availability of parts is good, and the vehicle’s relatively simple design makes it relatively easy to repair. Although superseded by more fuel-efficient and technologically advanced models, the 5.4L Expedition continues to offer a compelling combination of space, capability, and value for budget-conscious buyers.
