The Opel Astra J Sedan 1.4 Turbo (140 hp) LPG, produced from 2012 to 2018, represented a significant offering within the broader Astra J Sedan range. Positioned as a mid-range option, it aimed to balance fuel efficiency with respectable performance, and the availability of LPG conversion broadened its appeal to cost-conscious buyers. This variant was primarily marketed in Europe, where sedans remained a popular body style, and offered a more affordable entry point into the Astra J lineup compared to higher-powered or more luxuriously equipped models. It built upon the foundation of the Astra J (A170 platform), known for its improved ride quality and interior refinement over its predecessor.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra J Sedan |
| Type (Engine) | 1.4 Turbo (140 Hp) LPG |
| Start of production | 2012 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel Type | Petrol / LPG |
| Emission standard | Euro 5 |
| Power | 140 Hp @ 4900-6000 rpm |
| Power per litre | 102.8 Hp/l |
| Torque | 200 Nm @ 1850-4900 rpm (147.51 lb.-ft. @ 1850-4900 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | A14NET |
| Engine displacement | 1362 cm3 (83.11 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 72.5 mm (2.85 in.) |
| Piston Stroke | 82.6 mm (3.25 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Turbocharger |
| Engine oil capacity | 4 l (4.23 US qt | 3.52 UK qt) |
| Coolant | 6.2 l (6.55 US qt | 5.46 UK qt) |
| Trunk (boot) space – minimum | 460 l (16.24 cu. ft.) |
| Trunk (boot) space – maximum | 1010 l (35.67 cu. ft.) |
| Length | 4658 mm (183.39 in.) |
| Width | 1814 mm (71.42 in.) |
| Width including mirrors | 2013 mm (79.25 in.) |
| Height | 1500 mm (59.06 in.) |
| Wheelbase | 2685 mm (105.71 in.) |
| Front track | 1541 mm (60.67 in.) |
| Rear (Back) track | 1551 mm (61.06 in.) |
| Front overhang | 974 mm (38.35 in.) |
| Rear overhang | 999 mm (39.33 in.) |
| Minimum turning circle (turning diameter) | 11.5 m (37.73 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 brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
Powertrain & Engine Architecture
The heart of the Astra J Sedan 1.4 Turbo LPG is the A14NET engine, a 1.4-liter inline-four cylinder powerplant. This engine belongs to Opel’s family of small-displacement turbocharged engines, designed to deliver a balance of efficiency and performance. The A14NET utilizes multi-point fuel injection and a single turbocharger, providing 140 horsepower and 200 Nm (147.51 lb-ft) of torque. The turbocharger is a key component, providing increased air intake to the engine, boosting power output. The engine’s design incorporates features aimed at reducing friction and improving thermal efficiency. The LPG conversion is typically a factory-approved system, integrating seamlessly with the engine management system to allow for switching between petrol and LPG fuel sources. The 6-speed manual transmission was standard, offering precise gear changes and contributing to the car’s overall driving experience.
Driving Characteristics
The 1.4 Turbo engine, paired with the 6-speed manual gearbox, provided adequate performance for everyday driving. Acceleration was respectable, though not particularly brisk, with a 0-60 mph time estimated around 9.5-10.5 seconds. The turbocharger provided a noticeable boost in power during acceleration, but turbo lag was present, particularly at lower engine speeds. The manual transmission allowed for greater driver control and engagement compared to an automatic. The gear ratios were well-chosen for both city and highway driving, offering a balance between fuel efficiency and responsiveness. Compared to the 1.6-liter naturally aspirated engine available in some Astra J Sedans, the 1.4 Turbo offered significantly more power and torque, resulting in a more enjoyable driving experience. However, it didn’t match the performance of the higher-end 1.6 Turbo or diesel variants.
Equipment & Trim Levels
The Astra J Sedan 1.4 Turbo LPG typically came with a reasonable level of standard equipment. This included air conditioning, electric front windows, a basic audio system with USB connectivity, and ABS brakes. Higher trim levels, such as ‘Enjoy’ or ‘Cosmo’, added features like alloy wheels, cruise control, automatic climate control, and a more advanced infotainment system. Interior upholstery was typically cloth, with options for leather upgrades on higher trims. Optional extras included parking sensors, a sunroof, and a navigation system. The LPG system itself was integrated into the vehicle’s controls, with a switch allowing the driver to select between petrol and LPG operation.
Chassis & Braking
The Astra J Sedan utilized a MacPherson strut front suspension and a torsion beam rear suspension. This setup provided a good balance between ride comfort and handling. The front brakes were ventilated discs, offering good stopping power, while the rear brakes were typically solid discs. ABS (Anti-lock Braking System) was standard, enhancing safety during emergency braking. The steering was electrically assisted, providing light and precise steering feel. Stabilizer bars were fitted to both the front and rear axles, reducing body roll during cornering. The suspension tuning was generally geared towards comfort, making the Astra J Sedan a pleasant car for long journeys.
Market Reception & Comparison
The Astra J Sedan 1.4 Turbo LPG was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and reasonable performance. The availability of LPG conversion was seen as a significant advantage, particularly in countries where LPG fuel was readily available and relatively inexpensive. Compared to the diesel variants, the 1.4 Turbo LPG offered a quieter and smoother driving experience, but lacked the diesel’s superior fuel economy. Compared to the 1.6-liter petrol engine, the 1.4 Turbo provided a noticeable performance boost. Reliability was generally good, although some owners reported minor issues with the turbocharger or LPG system.
Legacy
The Opel Astra J Sedan 1.4 Turbo LPG remains a popular choice in the used car market, particularly for buyers seeking an affordable and fuel-efficient sedan. The A14NET engine has proven to be relatively reliable, although regular maintenance is essential to ensure its longevity. The LPG system requires periodic servicing to maintain optimal performance and safety. The Astra J Sedan’s comfortable ride, spacious interior, and reasonable running costs continue to make it a practical and appealing option for everyday transportation. Its position as a mid-range trim level means that finding well-maintained examples with a good service history is relatively common, making it a sensible choice for budget-conscious buyers.
