The Fiat Fullback Extended Cab SX 2.4d AWD, launched in 2017, represents Fiat’s entry into the one-tonne pickup truck segment. Developed in collaboration with Mitsubishi Motors, the Fullback is essentially a rebadged version of the Mitsubishi Triton. This particular variant, the SX 2.4d with 154 horsepower and all-wheel drive, was positioned as a work-oriented, mid-range offering within the Fullback lineup, appealing to buyers needing a robust and capable vehicle for both commercial and recreational purposes. The Extended Cab configuration provided a compromise between cargo space and limited rear passenger accommodation, making it suitable for crews or individuals needing occasional rear seating.
Technical Specifications
| Brand | Fiat |
| Model | Fullback |
| Generation | Fullback Extended Cab |
| Type (Engine) | SX 2.4d (154 Hp) AWD |
| Start of production | 2017 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Pick-up |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (combined) | 6.9-7.1 l/100 km (34.1 – 33.1 US mpg, 40.9 – 39.8 UK mpg, 14.5 – 14.1 km/l) |
| CO2 emissions | 180-187 g/km |
| Fuel Type | Diesel |
| Maximum speed | 169 km/h (105.01 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 11.7 kg/Hp, 85.3 Hp/tonne |
| Weight-to-torque ratio | 4.8 kg/Nm, 210.5 Nm/tonne |
| Power | 154 Hp @ 3500 rpm |
| Power per litre | 63.1 Hp/l |
| Torque | 380 Nm @ 1500-2500 rpm (280.27 lb.-ft. @ 1500-2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 4N15 |
| Engine displacement | 2442 cm3 (149.02 cu. in.) |
| Engine configuration | Inline |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 8.3 l (8.77 US qt | 7.3 UK qt) |
| Coolant | 7.7 l (8.14 US qt | 6.78 UK qt) |
| Kerb Weight | 1805 kg (3979.34 lbs.) |
| Max. weight | 2840 kg (6261.13 lbs.) |
| Max load | 1035 kg (2281.78 lbs.) |
| Fuel tank capacity | 75 l (19.81 US gal | 16.5 UK gal) |
| Permitted trailer load with brakes (12%) | 3000 kg (6613.87 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 5215 mm (205.31 in.) |
| Width | 1785 mm (70.28 in.) |
| Height | 1775 mm (69.88 in.) |
| Wheelbase | 3000 mm (118.11 in.) |
| Front track | 1520 mm (59.84 in.) |
| Rear track | 1515 mm (59.65 in.) |
| Front overhang | 885 mm (34.84 in.) |
| Rear overhang | 1330 mm (52.36 in.) |
| Minimum turning circle | 11.8 m (38.71 ft.) |
| Approach angle | 30° |
| Departure angle | 22° |
| Ramp-over angle | 24° |
| Climb angle | 45° |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Torsion |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Wheel rims size | 16 |
Powertrain & Engine Architecture
The Fullback SX 2.4d utilizes Mitsubishi’s 4N15 2.4-liter inline-four cylinder diesel engine. This engine is a common rail direct injection (CRDI) unit, employing a turbocharger with an intercooler to boost power and efficiency. The 4N15 engine is known for its relatively simple design and robust construction. The engine produces 154 horsepower at 3500 rpm and a substantial 380 Nm (280 lb-ft) of torque between 1500 and 2500 rpm, providing ample pulling power for hauling and towing. The SX trim level was exclusively offered with a six-speed manual transmission, delivering direct control and contributing to fuel efficiency. The engine meets Euro 6 emission standards, incorporating a diesel particulate filter (DPF) to reduce harmful emissions.
Driving Characteristics
The 154 hp 2.4d engine, coupled with the six-speed manual transmission, provides a practical and capable driving experience. While not exceptionally quick, the Fullback SX offers sufficient power for everyday driving and hauling loads. The torque curve is relatively flat, meaning that strong pulling power is available across a wide rev range. The manual transmission allows for precise gear selection, enabling drivers to optimize performance and fuel economy. Compared to potential higher-output versions (not offered in the US market), the SX trim prioritizes fuel efficiency and durability over outright performance. The all-wheel-drive system provides enhanced traction in various conditions, making it suitable for both on-road and off-road use.
Equipment & Trim Levels
The SX trim level of the Fullback Extended Cab offered a balance of functionality and comfort. Standard features typically included air conditioning, power windows, central locking, and a basic audio system. The interior was generally utilitarian, with durable plastic materials and cloth upholstery. The Extended Cab configuration provided limited rear seating, best suited for occasional passengers. Optional extras could include alloy wheels, a more advanced audio system, and a reversing camera. The SX trim was positioned above the base-level models, offering a step up in terms of features and refinement.
Chassis & Braking
The Fullback utilizes a body-on-frame construction, providing a robust and durable platform for heavy-duty use. The front suspension features an independent McPherson strut setup, while the rear suspension employs a torsion beam axle. This configuration provides a good balance of ride comfort and load-carrying capacity. The braking system consists of ventilated discs on the front wheels and drum brakes on the rear. Anti-lock Braking System (ABS) is standard, enhancing safety during emergency braking situations. The chassis is designed to handle significant payloads and towing loads, making it a versatile work vehicle.
Market Reception & Comparison
The Fiat Fullback, and specifically the SX 2.4d AWD variant, received generally positive reviews for its practicality, durability, and off-road capability. Critics noted that it offered a competitive alternative to established players in the one-tonne pickup segment, such as the Toyota Hilux and the Ford Ranger. However, some reviewers pointed out that the interior was somewhat basic compared to some rivals. Fuel economy was considered reasonable for a vehicle of its size and type. Compared to other trims in the Fullback lineup, the SX 2.4d offered a good balance of performance, fuel efficiency, and price.
Legacy
The Fiat Fullback, while not a long-term success for Fiat in the pickup market, demonstrated the brand’s ability to compete in a challenging segment. The 4N15 engine has proven to be a reliable and durable unit, and examples of the Fullback SX 2.4d are still found on the used car market today. These vehicles are generally well-regarded for their robustness and practicality, making them a viable option for buyers seeking a capable and affordable pickup truck. Maintenance costs are generally reasonable, and parts availability is typically good, thanks to the shared components with the Mitsubishi Triton.
