The Opel Astra J 2.0 CDTI Automatic, produced between 2009 and 2012, represented a significant offering in the European compact car segment. Positioned as a mid-range to upper-mid-range trim within the Astra J lineup (which spanned from efficient three-cylinder gasoline engines to more potent turbocharged diesels), this variant combined a 2.0-liter turbocharged diesel engine with a six-speed automatic transmission. It aimed to provide a balance of performance, fuel economy, and convenience for drivers seeking a comfortable and capable daily driver. The Astra J itself was the successor to the popular Astra H, built on the GM Delta platform, and was a key model for Opel in Europe, competing directly with vehicles like the Volkswagen Golf, Ford Focus, and Peugeot 308.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra J |
| Type (Engine) | 2.0 CDTI (160 Hp) Automatic |
| Start of production | 2009 |
| End of production | 2012 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.9 l/100 km (29.8 US mpg) |
| Fuel consumption (extra urban) | 4.6 l/100 km (51.1 US mpg) |
| Fuel consumption (combined) | 5.8 l/100 km (40.6 US mpg) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.7 sec |
| Acceleration 0 – 62 mph | 9.7 sec |
| Acceleration 0 – 60 mph | 9.2 sec |
| Maximum speed | 207 km/h (128.62 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 9.5 kg/Hp |
| Weight-to-torque ratio | 4.3 kg/Nm |
| Power | 160 Hp @ 4000 rpm |
| Torque | 350 Nm @ 1750-2500 rpm (258.15 lb.-ft.) |
| 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.) |
| Compression ratio | 18:1 |
| 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 capacity | 6.9 l (7.29 US qt | 6.07 UK qt) |
| Kerb Weight | 1515 kg (3340 lbs.) |
| Max. weight | 2065 kg (4552.55 lbs.) |
| Max load | 550 kg (1212.54 lbs.) |
| Trunk (boot) space – minimum | 370 l (13.07 cu. ft.) |
| Trunk (boot) space – maximum | 1235 l (43.61 cu. ft.) |
| Fuel tank capacity | 56 l (14.79 US gal | 12.32 UK gal) |
| Length | 4419 mm (173.98 in.) |
| Width | 1814 mm (71.42 in.) |
| Width including mirrors | 2013 mm (79.25 in.) |
| Height | 1510 mm (59.45 in.) |
| Wheelbase | 2685 mm (105.71 in.) |
| Front track | 1541 mm (60.67 in.) |
| Rear track | 1581 mm (62.24 in.) |
| Ride height (ground clearance) | 160 mm (6.3 in.) |
| Drag coefficient (Cd) | 0.31 |
| Minimum turning circle | 11.4 m (37.4 ft.) |
| Drive wheel | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Automatic transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Tires size | 215/50 R17 |
| Wheel rims size | 17 |
Powertrain & Engine Architecture
At the heart of the Astra J 2.0 CDTI Automatic lies the A20DTH engine, a 1.956-liter inline-four cylinder diesel. This engine was a member of Opel/Fiat’s family of common-rail direct injection diesel engines, known for their efficiency and refinement. The A20DTH featured a turbocharger with an intercooler, boosting power output to 160 horsepower at 4000 rpm and a substantial 350 Nm (258 lb-ft) of torque available from 1750 to 2500 rpm. The engine utilized a 18:1 compression ratio and four valves per cylinder, contributing to its performance and efficiency. The fuel injection system was a Bosch common rail system, delivering highly pressurized fuel directly into the combustion chambers for optimized combustion. The six-speed automatic transmission, sourced from Aisin, was chosen for its smooth operation and responsiveness. It was not a dual-clutch transmission, but a traditional torque-converter automatic, prioritizing comfort over ultimate performance.
Driving Characteristics
The 2.0 CDTI Automatic offered a comfortable and relaxed driving experience. While not a sports-oriented setup, the engine provided ample torque for everyday driving and overtaking maneuvers. The automatic transmission, while smooth, wasn’t particularly quick to shift, especially compared to contemporary dual-clutch transmissions. Acceleration from 0 to 60 mph took around 9.2 seconds, and top speed was rated at 128.62 mph. The gear ratios were tuned for fuel efficiency and cruising comfort, rather than outright acceleration. Compared to the manual transmission version of the same engine, the automatic typically resulted in slightly slower acceleration times and marginally lower fuel economy. The 1.8L gasoline variants, while offering a different driving feel, lacked the low-end torque of the 2.0 CDTI, making the diesel a more practical choice for those frequently carrying passengers or cargo.
Equipment & Trim Levels
The Astra J 2.0 CDTI Automatic was typically offered in mid-to-high trim levels, such as ‘Enjoy’ or ‘Cosmo’. Standard equipment generally included air conditioning, power windows, central locking, a CD/MP3 stereo system, and alloy wheels. Higher trims added features like automatic climate control, rain-sensing wipers, a trip computer, and upgraded interior trim. Optional extras included a panoramic sunroof, leather upholstery, parking sensors, and a navigation system. Interior upholstery was typically cloth in the lower trims, with leather options available on higher-spec models. The dashboard layout was modern for its time, with a focus on ergonomics and ease of use.
Chassis & Braking
The Astra J featured a MacPherson strut front suspension and a torsion beam rear suspension. This setup provided a good balance of ride comfort and handling. The 2.0 CDTI Automatic, being one of the heavier variants, often benefited from slightly stiffer spring rates to manage the added weight. Braking duties were handled by ventilated discs at the front and solid discs at the rear. Anti-lock Braking System (ABS) was standard, providing enhanced braking performance and stability. The steering was a rack and pinion system, offering precise and responsive steering feel.
Market Reception & Comparison
The Astra J 2.0 CDTI Automatic was generally well-received by automotive critics. It was praised for its comfortable ride, refined engine, and good fuel economy. However, some reviewers noted that the automatic transmission could feel a bit sluggish at times. Compared to the 1.7 CDTI variant, the 2.0 CDTI offered significantly more power and torque, making it a more enjoyable driving experience, albeit at a slightly higher price point. Fuel economy was competitive with other diesel hatchbacks in its class, averaging around 40.6 US mpg in combined driving. Reliability was generally good, although some owners reported issues with the diesel particulate filter (DPF) system, a common concern with modern diesel engines.
Legacy
The Opel Astra J 2.0 CDTI Automatic remains a relatively common sight on European roads today. The A20DTH engine, when properly maintained, is known for its durability and longevity. However, potential buyers should be aware of the potential for DPF issues and the cost of replacing components like the turbocharger and fuel injectors. On the used car market, these Astras represent a good value proposition for those seeking a comfortable, fuel-efficient, and reliable compact hatchback. The combination of a torquey diesel engine and a smooth automatic transmission continues to appeal to drivers who prioritize ease of use and practicality.
