Comparison Opel Astra J GTC 1.4 (140 Hp) Turbo Ecotec Automatic & Opel Signum (facelift 2005) 3.0 V6 CDTI (184 Hp) Automatic
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| Brand: | Opel | Opel |
| Model: | Astra | Signum |
| Generation: | Astra J GTC | Signum (facelift 2005) |
| Engine / modification: | 1.4 (140 Hp) Turbo Ecotec Automatic | 3.0 V6 CDTI (184 Hp) Automatic |
| Production start: | 2011 year | 2005 year |
| Production end: | 2018 year | 2008 year |
| Coupe type: | Hatchback | Hatchback |
| Num. of Doors: | 3 | 5 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 8.6-8.7 l/100 km | 10.3 l/100 km |
| Fuel consumption / economy - extra urban: | 5.4-5.5 l/100 km | 5.4 l/100 km |
| Fuel consumption / economy - combined: | 6.6 l/100 km | 7.2 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.31 | 0.32 |
| Fuel tank volume: | 56 l | 60 l |
| Emission standard: | Euro 5 | |
| CO2 emissions: | 154-156 g/km | |
| Power: | 140 hp | 184 hp |
| Max power in: | 4900-6000 rpm. | 4000 rpm. |
| Maximum speed: | 200 km/h | 219 km/h |
| Acceleration from 0 to 100 km/h: | 10.3 sec | 9.8 sec |
| Torque: | 200 Nm @ 1850-4900 rpm. | 370 Nm @ 1900 rpm. |
| Model Engine: | A14NET | Z30DT |
| Engine position: | Front, transverse | Front, transverse |
| Engine displacement: | 1362 cm3 | 2958 cm3 |
| Engine oil capacity: | 4.0 l | 7.5 l |
| Fuel System: | Multi-point injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbocharging | Turbocharging |
| Position of cylinders: | Inline | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 4 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 9.5 | 18.5 |
| Piston Stroke: | 82.6 mm | 82 mm |
| Cylinder Bore: | 72.5 mm | 87.5 mm |
| Wheel Drive: | Front wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 6 | 5 |
| Length: | 4466 mm | 4651 mm |
| Width: | 1840 mm | 1798 mm |
| Width including mirrors: | 2020 mm | |
| Height: | 1482 mm | 1460 mm |
| Wheelbase: | 2695 mm | 2830 mm |
| Front track: | 1584 mm | 1535 mm |
| Rear (Back) track: | 1588 mm | 1525 mm |
| Ride height(clearance): | 112 mm | |
| Minimum volume of Luggage (trunk): | 380 l | 365 l |
| Maximum amount of Luggage (trunk): | 1165 l | 1410 l |
| Front suspension: | Coil spring | |
| Rear suspension: | Helical spring | |
| Max weight: | 1940 kg | 2185 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1437 kg | 1670 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.4 m | |
| Tire size: | 235/55 R17 | 215/55 R16 |
| Wheel rims size: | R17 | 6.5J x 16 |