The Opel Astra F Caravan 1.7 Turbo, produced from 1994 to 1997, represented a compelling option within the facelifted Astra F range. Positioned as a fuel-efficient and practical choice, this variant combined a turbocharged diesel engine with a five-speed manual transmission, catering to buyers prioritizing economy and load-carrying capacity. It was a key offering in the European market, where station wagons (known as Caravans in Opel terminology) held significant popularity. The 1.7 Turbo slotted into the mid-range of the Caravan lineup, offering a step up in performance from the naturally aspirated diesel models while remaining more affordable than the gasoline-powered options.
Technical Specifications
| Brand | Opel |
| Model | Astra |
| Generation | Astra F Caravan (facelift 1994) |
| Type (Engine) | 1.7 Turbo (82 Hp) |
| Start of production | 1994 |
| End of production | December, 1997 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.3 l/100 km (32.2 US mpg, 38.7 UK mpg, 13.7 km/l) |
| Fuel consumption (extra urban) | 5.3 l/100 km (44.4 US mpg, 53.3 UK mpg, 18.9 km/l) |
| Fuel consumption (combined) | 6.6 l/100 km (35.6 US mpg, 42.8 UK mpg, 15.2 km/l) |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 14.5 sec |
| Acceleration 0 – 62 mph | 14.5 sec |
| Acceleration 0 – 60 mph | 13.8 sec |
| Maximum speed | 168 km/h (104.39 mph) |
| Weight-to-power ratio | 13.9 kg/Hp, 71.9 Hp/tonne |
| Weight-to-torque ratio | 6.8 kg/Nm, 147.4 Nm/tonne |
| Power | 82 Hp @ 4400 rpm |
| Power per litre | 48.6 Hp/l |
| Torque | 168 Nm @ 2400 rpm (123.91 lb.-ft. @ 2400 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | X17DT |
| Engine displacement | 1686 cm3 (102.89 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 79 mm (3.11 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Compression ratio | 22:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Precombustion chamber injection |
| Engine aspiration | Turbocharger |
| Valvetrain | SOHC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 6.8 l (7.19 US qt | 5.98 UK qt) |
| Kerb Weight | 1140 kg (2513.27 lbs.) |
| Max. weight | 1640 kg (3615.58 lbs.) |
| Max load | 500 kg (1102.31 lbs.) |
| Trunk (boot) space – minimum | 500 l (17.66 cu. ft.) |
| Trunk (boot) space – maximum | 1630 l (57.56 cu. ft.) |
| Fuel tank capacity | 50 l (13.21 US gal | 11 UK gal) |
| Length | 4278 mm (168.43 in.) |
| Width | 1696 mm (66.77 in.) |
| Width including mirrors | 1852 mm (72.91 in.) |
| Height | 1525 mm (60.04 in.) |
| Wheelbase | 2517 mm (99.09 in.) |
| Front track | 1430-1424 mm (56.3 – 56.06 in.) |
| Rear (Back) track | 1429-1423 mm (56.26 – 56.02 in.) |
| Ride height (ground clearance) | 135 mm (5.31 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle | 10.5 m (34.45 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Steering type | Steering rack and pinion |
| Tires size | 175/70 R13 82T; 175/65 R14 82T |
| Wheel rims size | 5.5J x 13 ET49; 5.5J x 14 ET49 |
Powertrain & Engine Architecture
The heart of the Astra F Caravan 1.7 Turbo was the X17DT engine, a 1.7-liter inline-four diesel. This engine utilized a precombustion chamber injection system, a common technology for diesel engines of the era, designed to improve combustion efficiency and reduce noise. The addition of a turbocharger significantly boosted power output compared to naturally aspirated 1.7 diesel variants. The turbocharger, typically a Garrett unit, provided approximately 7.2 psi of boost. The engine featured a single overhead camshaft (SOHC) valvetrain operating two valves per cylinder. The five-speed manual transmission was a standard Getrag unit, known for its durability and precise shift feel. The gearbox ratios were geared towards maximizing fuel economy and providing adequate acceleration for everyday driving.
Driving Characteristics
The 1.7 Turbo Caravan offered a noticeable improvement in performance over its non-turbocharged counterparts. While not a sports car by any means, the 82 horsepower and 168 Nm (124 lb-ft) of torque provided sufficient power for comfortable cruising and overtaking. Acceleration from 0 to 100 km/h (0-62 mph) took around 14.5 seconds, and top speed was approximately 168 km/h (104 mph). The turbocharger did introduce a degree of turbo lag, meaning there was a slight delay between pressing the accelerator and feeling the full power delivery. However, once the turbo spooled up, the engine provided a useful surge of torque. The manual transmission allowed for precise control over gear selection, and the relatively long gearing contributed to good fuel economy on the highway.
Equipment & Trim Levels
The 1.7 Turbo Caravan typically came with a reasonable level of standard equipment. This included central locking, power steering, and a basic stereo system. Interior upholstery was typically cloth, with a durable and practical design. Optional extras included air conditioning, electric windows, and an upgraded stereo system. Trim levels varied slightly depending on the market, but generally, the 1.7 Turbo Caravan occupied a mid-range position in the lineup, offering a good balance of features and affordability.
Chassis & Braking
The Astra F Caravan featured a MacPherson strut front suspension and a torsion beam rear suspension. The suspension was tuned for comfort and stability, providing a reasonably smooth ride even when fully loaded. Braking was accomplished via ventilated discs on the front wheels and drum brakes on the rear. The braking system was adequate for the vehicle’s weight and performance, but lacked the stopping power of more modern systems. Stabilizer bars were fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Astra F Caravan 1.7 Turbo was generally well-received by automotive critics as a practical and economical family vehicle. It was praised for its spacious interior, comfortable ride, and fuel efficiency. Compared to the gasoline-powered Astra Caravans, the 1.7 Turbo offered significantly better fuel economy, making it a popular choice for high-mileage drivers. However, it was criticized for its relatively slow acceleration and the presence of turbo lag. Compared to other diesel-powered estate cars of the time, the Astra F Caravan 1.7 Turbo offered a competitive combination of performance, economy, and practicality.
Legacy
The X17DT engine proved to be a relatively reliable unit, and many Astra F Caravan 1.7 Turbos are still on the road today. While age and mileage inevitably take their toll, these vehicles are generally known for their durability and relatively low maintenance costs. The precombustion chamber injection system, while effective, can require specialized maintenance. In the used car market, the Astra F Caravan 1.7 Turbo represents an affordable and practical option for those seeking a classic European estate car. Its fuel efficiency and spacious interior continue to make it a viable choice for everyday use.
