The Opel Astra J Sedan 2.0 CDTI (165 Hp) Ecotec represents a significant iteration within the broader Astra J Sedan range, produced between 2012 and 2015. Positioned as a mid-range offering, this variant aimed to balance fuel efficiency with respectable performance, catering to drivers seeking a practical and economical family sedan. It was a key model in the European market, where the Astra consistently ranked among the best-selling compact cars. The Astra J Sedan, in general, was Opel’s attempt to broaden the Astra’s appeal by offering a traditional three-box sedan body style alongside the more common hatchback. This model utilized the GM Delta II platform, shared with other vehicles like the Chevrolet Cruze.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra J Sedan |
| Type (Engine) | 2.0 CDTI (165 Hp) Ecotec |
| Start of production | 2012 |
| End of production | 2015 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (combined) | 4.9 l/100 km (48 US mpg, 57.6 UK mpg, 20.4 km/l) |
| CO2 emissions | 129 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9 sec |
| Acceleration 0 – 62 mph | 9 sec |
| Acceleration 0 – 60 mph | 8.6 sec |
| Maximum speed | 215 km/h (133.59 mph) |
| Emission standard | Euro 5 |
| Power | 165 Hp @ 4000 rpm |
| Power per litre | 84.4 Hp/l |
| Torque | 350 Nm @ 1750-2500 rpm (258.15 lb.-ft. @ 1750-2500 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | A20DTH |
| Engine displacement | 1956 cm3 (119.36 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 90.4 mm (3.56 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 6.9 l (7.29 US qt | 6.07 UK qt) |
| 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 | Front wheel drive |
| Number of gears | 6 |
| Type of gearbox | 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 2.0 CDTI is the A20DTH engine, a 1.956-liter inline-four cylinder diesel. This engine is a member of Opel/Fiat’s Ecotec family, known for its focus on efficiency and refinement. It utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The A20DTH features a variable geometry turbocharger (VGT) and an intercooler, enhancing both power and torque across a broad RPM range. The engine produces 165 horsepower at 4000 rpm and a substantial 350 Nm (258 lb-ft) of torque between 1750 and 2500 rpm. This torque output is a key characteristic of the engine, providing strong pulling power for everyday driving and overtaking. The engine also incorporates a diesel particulate filter (DPF) to meet stringent Euro 5 emission standards. The standard transmission for this variant was a six-speed manual gearbox, chosen for its efficiency and driver engagement.
Driving Characteristics
The 2.0 CDTI with the six-speed manual transmission delivers a balanced driving experience. Acceleration from 0 to 60 mph takes approximately 8.6 seconds, and the car has a top speed of 133.59 mph. The engine’s strong low-end torque makes it feel responsive in city driving and provides ample power for highway cruising. The six-speed gearbox is well-matched to the engine’s characteristics, offering precise shifts and allowing the driver to keep the engine in its optimal power band. Compared to the lower-powered 1.3 CDTI variants, the 2.0 CDTI offers a noticeable performance improvement, making it more suitable for drivers who frequently carry passengers or travel long distances. While not a sports sedan, the Astra J 2.0 CDTI provides a comfortable and confident driving experience.
Equipment & Trim Levels
The Astra J Sedan 2.0 CDTI typically came equipped with a respectable level of standard features. These included air conditioning, power windows, power mirrors, a CD/MP3 stereo system, and ABS brakes. Higher trim levels, such as the ‘Sport’ or ‘Cosmo’ variants, added features like alloy wheels, a multi-function steering wheel, cruise control, automatic climate control, and parking sensors. Interior upholstery was typically cloth, with leather options available on higher trims. Optional extras included a navigation system, a sunroof, and upgraded audio systems.
Chassis & Braking
The Astra J Sedan utilizes 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, while the rear brakes are typically solid discs, providing adequate stopping power for the vehicle’s weight and performance. Electric power steering is standard, offering a light and precise steering feel. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Opel Astra J Sedan 2.0 CDTI was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and spacious interior. However, some critics noted that the interior design was somewhat conservative and that the handling wasn’t as sporty as some of its rivals. Compared to the 1.3 CDTI variant, the 2.0 CDTI offered significantly better performance, but at a higher price point. The 2.0 CDTI also offered better fuel economy and lower emissions than the petrol-powered Astra J Sedans.
Legacy
The A20DTH engine, while generally reliable, is known to require regular maintenance, particularly regarding the DPF system. Proper servicing, including the use of high-quality engine oil and regular DPF regeneration, is crucial for long-term reliability. Today, used Astra J Sedan 2.0 CDTI models represent a relatively affordable and practical option for buyers seeking a fuel-efficient and comfortable family sedan. The availability of spare parts is generally good, and the engine’s robust design means that well-maintained examples can still provide many years of reliable service. However, potential buyers should be aware of the potential costs associated with DPF maintenance and ensure that the vehicle has been properly serviced throughout its life.
