Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra G Caravan (facelift 2002) |
| Type (Engine) | 1.8 16V (125 Hp) |
| Start of production | 2002 |
| End of production | May, 2004 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 11.1 l/100 km (21.2 US mpg, 25.4 UK mpg, 9 km/l) |
| Fuel consumption (extra urban) | 6.2 l/100 km (37.9 US mpg, 45.6 UK mpg, 16.1 km/l) |
| Fuel consumption (combined) | 8 l/100 km (29.4 US mpg, 35.3 UK mpg, 12.5 km/l) |
| CO2 emissions | 192 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 10 sec |
| Acceleration 0 – 62 mph | 10 sec |
| Acceleration 0 – 60 mph | 9.5 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Weight-to-power ratio | 9.4 kg/Hp, 106.4 Hp/tonne |
| Weight-to-torque ratio | 6.9 kg/Nm, 144.7 Nm/tonne |
| Power | 125 Hp @ 5600 rpm |
| Power per litre | 69.6 Hp/l |
| Torque | 170 Nm @ 3800 rpm (125.39 lb.-ft. @ 3800 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | Z18XE |
| 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 engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.25 l (4.49 US qt | 3.74 UK qt) |
| Coolant | 6.3 l (6.66 US qt | 5.54 UK qt) |
| Kerb Weight | 1175 kg (2590.43 lbs.) |
| Max. weight | 1750 kg (3858.09 lbs.) |
| Max load | 575 kg (1267.66 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 1500 l (52.97 cu. ft.) |
| Fuel tank capacity | 52 l (13.74 US gal | 11.44 UK gal) |
| Length | 4288 mm (168.82 in.) |
| Width | 1709 mm (67.28 in.) |
| Width including mirrors | 1967 mm (77.44 in.) |
| Height | 1510 mm (59.45 in.) |
| Wheelbase | 2611 mm (102.8 in.) |
| Front track | 1464 mm (57.64 in.) |
| Rear (Back) track | 1452 mm (57.17 in.) |
| Ride height (ground clearance) | 130 mm (5.12 in.) |
| Drag coefficient (Cd) | 0.32 |
| Drivetrain Architecture | ICE, Front wheel drive |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Spring Strut |
| Rear suspension | Trailing arm |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 195/60 R15 |
| Wheel rims size | 15 |
The Opel Astra G Caravan (facelift, produced 2002-2004) 1.8 16V represents a popular, mid-range offering within the broader Astra G series. Introduced as part of the facelifted G generation (internally designated as the 1HX0/A3 platform), this variant combined a relatively accessible price point with a practical station wagon body style, making it a common sight on European roads. It aimed to balance fuel efficiency, performance, and cargo capacity for families and individuals needing a versatile vehicle. This specific configuration, with its 1.8-liter engine and five-speed manual transmission, occupied a space between the base models and the more powerful, performance-oriented versions.
Powertrain & Engine Architecture
The heart of this Astra variant is the Z18XE engine, an 1.8-liter inline-four cylinder gasoline engine. This engine belongs to the Opel/Vauxhall “Ecotec” family, known for its focus on efficiency and refinement. The Z18XE features multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain, operating with four valves per cylinder. This configuration allows for good breathing and contributes to the engine’s respectable power output for its displacement. The engine’s 1796 cc displacement, combined with a 10.5:1 compression ratio, delivers 125 horsepower at 5600 rpm and 170 Nm (125 lb-ft) of torque at 3800 rpm. The five-speed manual transmission provides a relatively conventional gear ratio spread, prioritizing fuel economy and everyday drivability over outright performance.
Driving Characteristics
The 1.8 16V Astra Caravan, with its manual transmission, offered a balanced driving experience. Acceleration from 0-60 mph took around 9.5 seconds, and top speed was rated at 200 km/h (124 mph). While not a sports car, the engine provided sufficient power for comfortable highway cruising and overtaking. The manual gearbox allowed for driver control and engagement, although the gear ratios were tuned for economy rather than aggressive acceleration. Compared to the more powerful 2.2-liter Direct Injection engines or the torquey 2.0-liter Turbo versions, this 1.8 felt less urgent, but it offered better fuel economy and lower running costs. The Caravan’s suspension, tuned for comfort, provided a reasonably compliant ride, even when fully loaded.
Equipment & Trim Levels
The 1.8 16V Caravan typically came with a reasonable level of standard equipment. This included central locking, power windows, power steering, and an anti-lock braking system (ABS). Interior upholstery was usually cloth, with a functional, if somewhat basic, dashboard layout. Optional extras included air conditioning, alloy wheels, a CD player, and upgraded interior trim. The trim level often dictated the availability of these options, with higher trims offering more features as standard.
Chassis & Braking
The Astra G Caravan utilized a MacPherson strut front suspension and a trailing arm rear suspension. This setup provided a good balance between ride comfort and handling. The front brakes were ventilated discs, while the rear brakes were solid discs. The braking system, combined with ABS, offered adequate stopping power for everyday driving. The Caravan’s chassis was designed to accommodate the larger cargo volume of the station wagon body style, resulting in a slightly softer suspension setup compared to the hatchback versions.
Market Reception & Comparison
The 1.8 16V Astra Caravan was well-received as a practical and affordable family car. Critics praised its spacious interior, comfortable ride, and reasonable fuel economy. However, some noted that the engine lacked the punch of the more powerful alternatives. Compared to the 2.0-liter diesel models, the 1.8 offered less torque but a smoother, quieter driving experience. Fuel economy was competitive within its class, and reliability was generally good, although routine maintenance was essential to prevent issues with the engine’s cooling system and fuel injection components.
Legacy
The Opel Astra G Caravan 1.8 16V remains a relatively common sight on used car markets today. The Z18XE engine is known for its durability, provided it has been properly maintained. While not a particularly exciting car, it represents a solid and dependable choice for those seeking a practical and affordable station wagon. Parts availability is generally good, and maintenance costs are reasonable. The combination of a spacious interior, comfortable ride, and relatively fuel-efficient engine continues to make it a viable option for budget-conscious buyers.
