The Fiat Doblo II (263 series), particularly the facelifted version introduced in January 2015 and produced through August 2019, represented a significant evolution of Fiat’s compact multi-purpose vehicle (MPV). The 1.4 T-JET 120 Hp CNG variant occupied a unique position within the Doblo II lineup, offering a blend of fuel efficiency through its Compressed Natural Gas (CNG) capability, reasonable performance, and practicality for families or commercial users. This model was primarily aimed at the European market, where CNG infrastructure was more developed and demand for alternative fuel vehicles was growing. It served as a bridge between the more basic, lower-powered versions and the higher-specification diesel options.
Technical Specifications
| Brand | Fiat |
| Model | Doblo |
| Generation | Doblo II (263, facelift 2015) |
| Type (Engine) | 1.4 T-JET (120 Hp) CNG |
| Start of production | January, 2015 |
| End of production | August, 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Minivan |
| Seats | 7 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 9.7 l/100 km (24.2 US mpg, 29.1 UK mpg, 10.3 km/l) |
| Fuel consumption (economy) – urban (CNG) | 6.5 kg/100 km |
| Fuel consumption (economy) – extra urban | 6.1 l/100 km (38.6 US mpg, 46.3 UK mpg, 16.4 km/l) |
| Fuel consumption (economy) – extra urban (CNG) | 4.0 kg/100 km |
| Fuel consumption (economy) – combined | 7.4 l/100 km (31.8 US mpg, 38.2 UK mpg, 13.5 km/l) |
| Fuel consumption (economy) – combined (CNG) | 4.9 kg/100 km |
| CO2 emissions | 173 g/km |
| CO2 emissions (CNG) | 134 g/km |
| Fuel Type | Petrol / CNG |
| Acceleration 0 – 100 km/h | 12.3 sec |
| Acceleration 0 – 62 mph | 12.3 sec |
| Acceleration 0 – 60 mph | 11.7 sec |
| Maximum speed | 172 km/h (106.88 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 12.8 kg/Hp, 77.9 Hp/tonne |
| Weight-to-torque ratio | 7.5 kg/Nm, 133.8 Nm/tonne |
| Power | 120 Hp @ 5000 rpm |
| Power per litre | 87.7 Hp/l |
| Torque | 206 Nm @ 2000 rpm (151.94 lb.-ft. @ 2000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 198A4000 |
| Engine displacement | 1368 cm3 (83.48 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 72 mm (2.83 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 9.8:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 2.9 l (3.06 US qt, 2.55 UK qt) |
| Coolant | 5.8 l (6.13 US qt, 5.1 UK qt) |
| Kerb Weight | 1540 kg (3395.12 lbs.) |
| Trunk (boot) space – minimum | 790 l (27.9 cu. ft.) |
| Trunk (boot) space – maximum | 3200 l (113.01 cu. ft.) |
| Fuel tank capacity | 22 l (5.81 US gal, 4.84 UK gal) |
| CNG cylinder capacity | 16.15 kg |
| Permitted trailer load with brakes (12%) | 1000 kg (2204.62 lbs.) |
| Permitted trailer load without brakes | 500 kg (1102.31 lbs.) |
| Length | 4406 mm (173.46 in.) |
| Width | 1832 mm (72.13 in.) |
| Height | 1899 mm (74.76 in.) |
| Wheelbase | 2755 mm (108.46 in.) |
| Front track | 1510 mm (59.45 in.) |
| Rear (Back) track | 1530 mm (60.24 in.) |
| Minimum turning circle | 11.2 m (36.75 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 6 gears, manual transmission |
| Front suspension | Independent type McPherson |
| Rear suspension | Independent coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 195/60 R16 C 99T |
| Wheel rims size | 16 |
INTRODUCTION
The Fiat Doblo II, launched in 2009 and receiving a significant facelift in 2015, quickly became a popular choice in the European MPV segment. Known for its practicality, spacious interior, and relatively affordable price point, the Doblo II catered to a wide range of buyers, from families seeking a versatile vehicle to businesses needing a compact van for deliveries. The 1.4 T-JET 120 Hp CNG version, introduced with the 2015 facelift, was a key component of Fiat’s strategy to offer more environmentally friendly and cost-effective options. It was built on the 1HX0/A3 platform, shared with other Stellantis vehicles like the Opel Combo and Peugeot Partner.
Powertrain & Engine Architecture
At the heart of the Doblo II 1.4 T-JET CNG lies the 198A4000 engine, a 1.4-liter inline-four cylinder gasoline engine equipped with a turbocharger and intercooler. This engine is part of Fiat’s T-JET (Turbo Jet) family, known for its responsiveness and relatively good fuel economy. The engine utilizes multi-point fuel injection and a compression ratio of 9.8:1. The CNG conversion is a bi-fuel system, meaning the engine can run on either gasoline or compressed natural gas, or a combination of both. When running on CNG, the engine management system automatically adjusts the fuel delivery to optimize performance and efficiency. The 6-speed manual transmission was standard for this variant, providing a good balance between fuel economy and drivability. The transmission’s gear ratios were tuned to maximize the engine’s torque output at lower speeds, which was particularly beneficial when running on CNG.
Driving Characteristics
The 1.4 T-JET 120 Hp engine, paired with the 6-speed manual transmission, offered a decent driving experience for the Doblo II. While not particularly sporty, it provided sufficient power for everyday driving, including highway cruising and carrying a full load of passengers or cargo. Acceleration from 0-60 mph took around 11.7 seconds, and the top speed was approximately 106.88 mph. Compared to the lower-powered 1.3 Multijet diesel engine, the 1.4 T-JET offered a more responsive feel, especially at higher engine speeds. However, it lacked the low-end torque of the diesel. Compared to the higher-output 1.6 Multijet diesel, the 1.4 T-JET was noticeably less powerful, but it offered a smoother and quieter driving experience. The CNG operation slightly reduced overall power output compared to gasoline mode, but the lower fuel costs often offset this difference.
Equipment & Trim Levels
The 1.4 T-JET 120 Hp CNG variant of the Doblo II typically came with a reasonable level of standard equipment. This included features like air conditioning, power windows, central locking, and an audio system with USB connectivity. Higher trim levels offered additional features such as alloy wheels, a touchscreen infotainment system, rear parking sensors, and cruise control. Interior upholstery was typically cloth, with options for upgraded materials on higher trims. The dashboard layout was functional and straightforward, with easy-to-use controls. Safety features included ABS brakes, electronic stability control, and airbags for the driver and front passenger.
Chassis & Braking
The Doblo II featured a McPherson strut front suspension and an independent coil spring rear suspension, providing a comfortable ride quality. The suspension was tuned to prioritize comfort over sporty handling. The front brakes were ventilated discs, while the rear brakes were drums. This configuration was adequate for the vehicle’s weight and intended use. ABS (Anti-lock Braking System) was standard, enhancing braking performance and stability. The steering was a rack and pinion system, providing precise and responsive steering feel.
Market Reception & Comparison
The Doblo II 1.4 T-JET CNG was generally well-received by critics for its fuel efficiency and practicality. The CNG conversion allowed owners to benefit from lower fuel costs, particularly in countries with favorable CNG pricing. However, some reviewers noted that the engine lacked the refinement of some of its competitors. Compared to the diesel versions, the 1.4 T-JET CNG offered a quieter and smoother driving experience, but it had slightly higher CO2 emissions when running on gasoline. Fuel economy was a strong point, achieving around 31.8 US mpg on a combined cycle when running on gasoline and even better when utilizing CNG. Reliability was generally good, with few reported issues specific to the 1.4 T-JET engine or CNG conversion.
Legacy
The Fiat Doblo II 1.4 T-JET 120 Hp CNG remains a practical and affordable option in the used car market. The 198A4000 engine has proven to be relatively reliable, and the CNG conversion, when properly maintained, can provide significant cost savings. However, potential buyers should be aware of the need for regular servicing of the CNG system. The Doblo II’s spacious interior and versatile configuration continue to make it a popular choice for families and small businesses. While newer MPVs offer more advanced technology and features, the Doblo II 1.4 T-JET CNG represents a solid and dependable option for those seeking a practical and fuel-efficient vehicle.


