The Opel Astra H (facelift, produced 2007-2009) 1.9 CDTI ECOTEC variant, generating 120 horsepower, represented a significant offering within the Astra H range. Introduced as part of the facelifted H generation (internally designated as the A04 generation), this model aimed to balance fuel efficiency with respectable performance, catering to buyers seeking a practical and economical family hatchback. Positioned as a mid-range option, it slotted between the lower-powered 1.3 CDTI and the more potent 1.9 CDTI 150 hp versions. The Astra H series itself was a crucial model for Opel, representing a substantial step forward in terms of design, technology, and overall refinement compared to its predecessor, the Astra G.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra H (facelift 2007) |
| Type (Engine) | 1.9 CDTI ECOTEC (120 Hp) |
| Start of production | 2007 |
| End of production | 2009 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Hatchback |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.4 l/100 km (31.8 US mpg) |
| Fuel consumption (extra urban) | 4.9 l/100 km (48 US mpg) |
| Fuel consumption (combined) | 5.8 l/100 km (40.6 US mpg) |
| CO2 emissions | 157 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 10.5 sec |
| Acceleration 0 – 62 mph | 10.5 sec |
| Acceleration 0 – 60 mph | 10 sec |
| Maximum speed | 194 km/h (120.55 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 11 kg/Hp |
| Weight-to-torque ratio | 4.7 kg/Nm |
| Power | 120 Hp @ 3500 rpm |
| Torque | 280 Nm @ 2000-2750 rpm (206.52 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z19DT |
| Engine displacement | 1910 cm3 (116.56 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 90.4 mm (3.56 in.) |
| Compression ratio | 18:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | SOHC |
| Engine oil capacity | 4.3 l (4.54 US qt | 3.78 UK qt) |
| Coolant capacity | 7 l (7.4 US qt | 6.16 UK qt) |
| Kerb Weight | 1320 kg (2910.1 lbs.) |
| Max. weight | 1885 kg (4155.71 lbs.) |
| Max load | 565 kg (1245.61 lbs.) |
| Trunk (boot) space – minimum | 380 l (13.42 cu. ft.) |
| Trunk (boot) space – maximum | 1295 l (45.73 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load (braked) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load (unbraked) | 680 kg (1499.14 lbs.) |
| Length | 4249 mm (167.28 in.) |
| Width | 1753 mm (69.02 in.) |
| Width with mirrors folded | 1804 mm (71.02 in.) |
| Width including mirrors | 2033 mm (80.04 in.) |
| Height | 1460 mm (57.48 in.) |
| Wheelbase | 2614 mm (102.91 in.) |
| Front track | 1488 mm (58.58 in.) |
| Rear track | 1488 mm (58.58 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle | 11.2 m (36.75 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 6 |
| Gearbox type | Manual |
| Front suspension | Independent, McPherson with coil spring and anti-roll bar |
| Rear suspension | Torsion |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric |
| Tires size | 205/55 R16; 225/45 R17; 225/40 R18 |
| Wheel rims size | 6.5J x 16; 7J x 17; 7.5J x 18 |
INTRODUCTION
The Opel Astra H facelift 1.9 CDTI ECOTEC (120 hp) was produced from 2007 to 2009 and represented a popular choice for European drivers seeking a blend of economy and practicality. Built on the GM Delta platform (A04), the Astra H benefitted from a significant overhaul in design and engineering compared to the previous generation. The facelift brought revised styling, improved interior materials, and updated engine options, including this 1.9-liter turbodiesel. This variant aimed to provide a more refined driving experience and lower running costs than its petrol counterparts, making it well-suited for both urban commuting and longer journeys.
Powertrain & Engine Architecture
At the heart of this Astra variant lies the Z19DT engine, a 1.9-liter inline-four cylinder turbodiesel. This engine, a mainstay in Opel and Vauxhall vehicles of the era, is characterized by its robust construction and relatively simple design. It utilizes a common rail direct injection system, delivering fuel directly into the combustion chamber at extremely high pressure for improved efficiency and reduced emissions. The Z19DT features a single overhead camshaft (SOHC) valvetrain operating two valves per cylinder. A turbocharger with an intercooler is employed to boost power output and improve torque across a wider rev range. The 120 hp version of the Z19DT differs from the 150 hp variant primarily through revised engine mapping and a slightly smaller turbocharger, prioritizing fuel economy over outright performance. The engine is transversely mounted in the front of the vehicle, driving the front wheels. The six-speed manual transmission offered precise shifts and contributed to the car’s overall efficiency.
Driving Characteristics
The 1.9 CDTI 120 hp Astra H offered a competent, if not particularly exhilarating, driving experience. With 280 Nm (206.52 lb-ft) of torque available from 2000-2750 rpm, the engine provided ample pulling power for everyday driving situations. Acceleration from 0-60 mph took around 10 seconds, and top speed was approximately 120 mph. The six-speed manual gearbox was well-matched to the engine’s characteristics, allowing drivers to keep the engine in its optimal torque band. Compared to the 150 hp version, the 120 hp model felt less responsive, particularly at higher speeds. However, it offered noticeably better fuel economy. The suspension setup, featuring McPherson struts at the front and a torsion beam at the rear, provided a comfortable ride, although it wasn’t particularly sporty. Steering was light and precise, making the Astra easy to maneuver in urban environments.
Equipment & Trim Levels
The 1.9 CDTI 120 hp Astra H was typically offered in mid-range trim levels, such as Enjoy or Sport. Standard equipment generally included air conditioning, electric front windows, a CD stereo, and ABS brakes. Higher trim levels added features like alloy wheels, a multi-function steering wheel, cruise control, and upgraded interior trim. Optional extras included a sunroof, parking sensors, and a more advanced audio system. Interior upholstery was typically cloth, with the option of leather seats on higher-spec models. The dashboard layout was functional and well-designed, with clear instrumentation and intuitive controls.
Chassis & Braking
The Astra H utilized a front-wheel-drive chassis with independent suspension at the front and a torsion beam rear axle. The front suspension employed McPherson struts with coil springs and an anti-roll bar, while the rear suspension relied on a simpler torsion beam setup. This configuration provided a good balance between ride comfort and handling. Braking duties were handled by ventilated discs at the front and solid discs at the rear, providing adequate stopping power for the vehicle’s weight and performance. ABS (Anti-lock Braking System) was standard, enhancing safety in emergency braking situations.
Market Reception & Comparison
The Opel Astra H 1.9 CDTI 120 hp was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and practical interior. However, some reviewers noted that the engine lacked the refinement and performance of some of its competitors. Compared to the 1.9 CDTI 150 hp version, the 120 hp model offered better fuel economy but less power. Against rivals like the Ford Focus and Volkswagen Golf, the Astra H 1.9 CDTI 120 hp offered a competitive package, particularly in terms of value for money. Its fuel economy figures of around 40.6 US mpg combined were particularly attractive to buyers seeking to minimize running costs.
Legacy
The Z19DT engine, while generally reliable, is known to require regular maintenance, particularly regarding the diesel particulate filter (DPF). Proper servicing and the use of high-quality oil are crucial for ensuring long-term durability. Today, the Astra H 1.9 CDTI 120 hp can be found on the used car market at affordable prices. It remains a practical and economical choice for those seeking a reliable family hatchback. While not a performance car, its blend of fuel efficiency, comfort, and practicality continues to appeal to a wide range of buyers. The Astra H, and particularly this engine variant, represents a solid and dependable offering from Opel during a period of significant development for the brand.


