The Opel Astra J Sedan 1.7 CDTI (110 hp) ecoFLEX, produced from 2012 to 2014, represented a fuel-efficient offering within the broader Astra J Sedan range. Positioned as a mid-range trim, it aimed to balance practicality, economy, and reasonable performance for European drivers. This variant was particularly significant in markets prioritizing diesel fuel efficiency and lower emissions, aligning with Opel’s ecoFLEX initiative. It sat below the more powerful petrol variants and above the base-level trims, offering a compelling option for those seeking a comfortable and economical family sedan.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra J Sedan |
| Type (Engine) | 1.7 CDTI (110 Hp) Ecotec ecoFLEX |
| Start of production | 2012 |
| End of production | 2014 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 4.3 l/100 km (54.7 US mpg, 65.7 UK mpg, 23.3 km/l) |
| Fuel consumption (extra urban) | 3.4 l/100 km (69.2 US mpg, 83.1 UK mpg, 29.4 km/l) |
| Fuel consumption (combined) | 3.7 l/100 km (63.6 US mpg, 76.3 UK mpg, 27 km/l) |
| CO2 emissions | 99 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 12.6 sec |
| Acceleration 0 – 62 mph | 12.6 sec |
| Acceleration 0 – 60 mph | 12 sec |
| Maximum speed | 191 km/h (118.68 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 12.8 kg/Hp, 78.3 Hp/tonne |
| Weight-to-torque ratio | 5 kg/Nm, 199.3 Nm/tonne |
| Power | 110 Hp @ 4000 rpm |
| Power per litre | 65.2 Hp/l |
| Torque | 280 Nm @ 1750-2500 rpm (206.52 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | A17DTE |
| Engine displacement | 1686 cm3 (102.89 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 79 mm (3.11 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.4 l (5.71 US qt | 4.75 UK qt) |
| Coolant | 7.1 l (7.5 US qt | 6.25 UK qt) |
| Kerb Weight | 1405 kg (3097.49 lbs.) |
| Max. weight | 1895 kg (4177.76 lbs.) |
| Max load | 490 kg (1080.27 lbs.) |
| Trunk (boot) space – minimum | 460 l (16.24 cu. ft.) |
| Trunk (boot) space – maximum | 1010 l (35.67 cu. ft.) |
| Fuel tank capacity | 56 l (14.79 US gal | 12.32 UK gal) |
| 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 | 11.5 m (37.73 ft.) |
| Drivetrain Architecture | ICE to Front Wheels |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | 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 1.7 CDTI ecoFLEX is the A17DTE engine, a 1.7-liter inline-four cylinder diesel. This engine belongs to Opel’s Ecotec family and features common-rail direct injection, a turbocharger with intercooling, and four valves per cylinder. The common-rail system, operating at high pressure, ensures precise fuel delivery for optimized combustion and reduced emissions. The turbocharger boosts power output, providing 110 horsepower at 4000 rpm and a substantial 280 Nm (206.52 lb-ft) of torque between 1750 and 2500 rpm. This torque curve is particularly beneficial for everyday driving, offering strong pulling power at lower engine speeds. The engine incorporates a particulate filter to minimize soot emissions, aligning with Euro 5 emission standards. The 6-speed manual transmission was the standard offering, chosen for its efficiency and driver engagement.
Driving Characteristics
The 1.7 CDTI with the manual transmission delivers a practical and economical driving experience. Acceleration from 0 to 100 km/h (0-62 mph) takes approximately 12.6 seconds, and top speed is rated at 191 km/h (118.68 mph). While not a performance-oriented variant, the engine’s torque provides adequate power for highway cruising and overtaking. The gear ratios are tuned for fuel efficiency, with taller gearing in higher gears to reduce engine speed at cruising speeds. Compared to the more powerful petrol versions of the Astra J, the 1.7 CDTI feels less responsive, but it compensates with significantly better fuel economy. The manual transmission allows for greater driver control, but requires more driver involvement than an automatic.
Equipment & Trim Levels
The Astra J Sedan 1.7 CDTI ecoFLEX typically came equipped with a reasonable level of standard features. These included air conditioning, electric front windows, a basic audio system with USB connectivity, and ABS brakes. Safety features such as front and side airbags were also standard. Higher trim levels offered options like alloy wheels, a more advanced infotainment system, cruise control, rear parking sensors, and automatic climate control. Interior upholstery was typically cloth, with a functional and durable design. The ecoFLEX designation often included specific aerodynamic enhancements and low-rolling-resistance tires to further improve fuel efficiency.
Chassis & Braking
The Astra J Sedan’s chassis features a MacPherson strut front suspension and a torsion beam rear suspension. This setup provides a good balance between ride comfort and handling. The front brakes are ventilated discs, offering good stopping power, while the rear brakes are typically drum brakes in this configuration to keep costs down. Electric power steering provides light and precise steering feel. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering. The suspension tuning is geared towards comfort, making it a pleasant vehicle for long journeys.
Market Reception & Comparison
The Astra J Sedan 1.7 CDTI ecoFLEX was generally well-received by critics for its fuel efficiency and low running costs. It was seen as a sensible choice for drivers covering high mileages or those prioritizing economy. Compared to other trims in the Astra J lineup, the 1.7 CDTI offered the best fuel economy, but at the expense of outright performance. The petrol variants provided more spirited acceleration, while the higher-powered diesel versions offered a better blend of performance and economy. Reliability was generally good, with the A17DTE engine proving to be a durable unit. However, like all diesel engines, it’s important to ensure regular servicing and use of high-quality fuel and oil.
Legacy
The Opel Astra J Sedan 1.7 CDTI ecoFLEX remains a popular choice in the used car market, particularly for those seeking an affordable and economical family sedan. The A17DTE engine has proven to be relatively reliable, although regular maintenance is crucial. Common issues can include diesel particulate filter (DPF) clogging, particularly on vehicles used primarily for short journeys. Overall, the Astra J 1.7 CDTI ecoFLEX represents a practical and efficient option for budget-conscious buyers, offering a good balance of comfort, economy, and reliability.
