The Opel Astra H Caravan (facelift, produced 2007-2010) 1.8 ECOTEC, generating 140 horsepower, represented a significant offering within the Astra H range. Positioned as a mid-range option, it bridged the gap between the more economical base engines and the performance-oriented variants like the OPC. This facelifted version of the Astra H, built on the GM Delta platform, aimed to refine the aesthetics and improve the overall driving experience of the popular European compact estate car. The 1.8-liter engine, coupled with a five-speed manual transmission, provided a balance of performance and fuel efficiency, making it a practical choice for families and individuals needing a versatile vehicle.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra H Caravan (facelift 2007) |
| Type (Engine) | 1.8 ECOTEC (140 Hp) |
| Start of production | 2007 |
| End of production | 2010 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 10-10.2 l/100 km (23.5 – 23.1 US mpg) |
| Fuel consumption (extra urban) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg) |
| Fuel consumption (combined) | 7.4-7.6 l/100 km (31.8 – 30.9 US mpg) |
| CO2 emissions | 178-182 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10.5 sec |
| Acceleration 0 – 62 mph | 10.5 sec |
| Acceleration 0 – 60 mph | 10 sec |
| Maximum speed | 207 km/h (128.62 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 8.9 kg/Hp |
| Weight-to-torque ratio | 7.1 kg/Nm |
| Power | 140 Hp @ 6300 rpm |
| Torque | 175 Nm @ 3800 rpm (129.07 lb.-ft. @ 3800 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z18XER |
| Engine displacement | 1796 cm3 (109.6 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 80.5 mm (3.17 in.) |
| Piston Stroke | 88.2 mm (3.47 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Valvetrain | DOHC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Kerb Weight | 1250 kg (2755.78 lbs.) |
| Max. weight | 1850 kg (4078.55 lbs.) |
| Max load | 600 kg (1322.77 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 1590 l (56.15 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load (braked) | 1300 kg (2866.01 lbs.) |
| Permitted trailer load (unbraked) | 660 kg (1455.05 lbs.) |
| Length | 4515 mm (177.76 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 | 1500 mm (59.06 in.) |
| Wheelbase | 2703 mm (106.42 in.) |
| Front track | 1488 mm (58.58 in.) |
| Rear track | 1488 mm (58.58 in.) |
| Front overhang | 871 mm (34.29 in.) |
| Rear overhang | 941 mm (37.05 in.) |
| Turning circle | 11.5 m (37.73 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 5 |
| Gearbox type | Manual transmission |
| 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 Caravan, particularly the facelifted models from 2007 onwards, was a mainstay in the European station wagon market. Designed to appeal to families and those requiring practical load-carrying capacity, the Caravan offered a compelling alternative to hatchback models. The 1.8 ECOTEC 140 hp variant, introduced with the facelift, aimed to provide a balance between performance, fuel economy, and affordability. It slotted into the lineup as a step up from the base 1.4-liter engine, offering more power for highway cruising and carrying loads, while remaining more accessible than the higher-performance turbocharged options. This model year saw improvements to the front fascia, interior trim, and available technology, enhancing the Astra’s overall appeal.
Powertrain & Engine Architecture
The heart of this Astra variant is the Z18XER engine, a 1.8-liter inline-four cylinder gasoline engine. This engine is part of Opel’s Ecotec family, known for its focus on efficiency and refinement. The Z18XER utilizes multi-port fuel injection, delivering fuel directly into the intake ports. It features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing airflow for improved power output. The engine’s 1796 cc displacement, combined with a compression ratio of 10.5:1, produces 140 horsepower at 6300 rpm and 175 Nm (129 lb-ft) of torque at 3800 rpm. The five-speed manual transmission was the standard offering, providing a relatively direct driving experience. The gearbox ratios were tuned for a balance of acceleration and fuel efficiency, with a focus on providing adequate power for everyday driving situations.
Driving Characteristics
The 1.8-liter engine and five-speed manual transmission combination in the Astra H Caravan offered a reasonably engaging driving experience. While not a sports car, the 140 hp output provided sufficient power for overtaking maneuvers and maintaining comfortable cruising speeds on the highway. The torque curve, peaking at 3800 rpm, meant that the engine felt responsive in the mid-range, making it suitable for everyday driving. Compared to the lower-powered 1.4-liter engine, the 1.8 offered noticeably improved acceleration and felt less strained when fully loaded. However, it lacked the punch of the turbocharged 2.0-liter models. The five-speed gearbox was well-matched to the engine’s characteristics, allowing for smooth and precise gear changes. The Caravan’s suspension provided a comfortable ride, absorbing bumps and imperfections in the road effectively, although it wasn’t particularly sporty in handling.
Equipment & Trim Levels
The 1.8 ECOTEC variant of the Astra H Caravan typically came with a respectable level of standard equipment. This included power windows, central locking, air conditioning, and an audio system with CD player. Safety features such as ABS brakes, front airbags, and seatbelt pretensioners were also standard. Higher trim levels, such as the ‘Enjoy’ or ‘Cosmo’ offered additional features like alloy wheels, climate control, parking sensors, and upgraded interior trim. Interior upholstery was typically cloth, with options for upgraded materials on higher trims. The dashboard layout was functional and user-friendly, with logically placed controls. Optional extras included a sunroof, navigation system, and premium sound system.
Chassis & Braking
The Astra H Caravan featured a McPherson strut front suspension with a coil spring and anti-roll bar, providing a good balance of comfort and handling. The rear suspension utilized a torsion beam setup, which was cost-effective and provided adequate stability for a family vehicle. Braking duties were handled by ventilated discs at the front and solid discs at the rear, providing adequate stopping power for most driving situations. ABS (Anti-lock Braking System) was standard, enhancing safety by preventing wheel lockup during hard braking. The steering was rack and pinion with electric power assistance, offering a light and precise feel.
Market Reception & Comparison
The Astra H Caravan 1.8 ECOTEC was generally well-received by automotive critics as a practical and well-rounded family car. It was praised for its spacious interior, comfortable ride, and reasonable fuel economy. However, some critics noted that the engine lacked the refinement and performance of some of its competitors. Compared to the 1.4-liter version, the 1.8 offered a significant improvement in performance, making it a more suitable choice for those who frequently carried passengers or luggage. Against the turbocharged 2.0-liter models, the 1.8 offered a more affordable price point, but at the expense of outright performance. Fuel economy figures were competitive for its class, averaging around 32-38 mpg on the combined cycle.
Legacy
The Opel/Vauxhall Astra H Caravan 1.8 ECOTEC has proven to be a relatively reliable vehicle in the used car market. The Z18XER engine is generally considered durable, although regular maintenance is essential to prevent issues such as oil leaks and timing chain wear. The five-speed manual transmission is also known for its robustness. Today, these vehicles are often available at affordable prices, making them a practical choice for budget-conscious buyers. While not a particularly exciting car, the Astra H Caravan 1.8 ECOTEC remains a capable and versatile estate car, offering a good balance of practicality, reliability, and affordability.
