Opel Signum 2005 vs Opel Astra 2004
| Gearbox: | Manual | Manual | |
|---|---|---|---|
| Engine: | 1.8 Petrol | 1.8 Petrol | |
| Camshaft drive: | Timing belt | Timing belt | |
Performance | |||
| Power: | 140 HP | 125 HP | |
| Torque: | 175 NM | 170 NM | |
| Acceleration 0-100 km/h: | 11.3 seconds | 10.8 seconds | |
| Opel Signum engine produces 15 HP more power than Opel Astra, whereas torque is 5 NM more than Opel Astra. Despite the higher power, Opel Signum reaches 100 km/h speed 0.5 seconds later. | |||
Fuel consumption | |||
| Fuel consumption (l/100km): | 7.7 | 7.8 | |
| Real fuel consumption: | 8.7 l/100km | 8.2 l/100km | |
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The Opel Astra is a better choice in terms of fuel economy based on user-reported consumption, although the specification shows otherwise. By specification Opel Signum consumes 0.1 litres less fuel per 100 km than the Opel Astra, which means that by driving the Opel Signum over 15,000 km in a year you can save 15 litres of fuel. But when we compare the real fuel consumption reported by users, Opel Signum consumes 0.5 litres more fuel per 100 km than the Opel Astra. | |||
| Fuel tank capacity: | 60 litres | 52 litres | |
| Full fuel tank distance: | 770 km in combined cycle | 660 km in combined cycle | |
| 980 km on highway | 830 km on highway | ||
| 680 km with real consumption | 630 km with real consumption | ||
| Opel Signum gets more mileage on one fuel tank. | |||
Engines | |||
| Engine production duration: | 5 years | 9 years | |
| Engine spread: | Installed on at least 3 other car models, including Opel Astra, Opel Zafira, Opel Vectra | Installed on at least 4 other car models, including Opel Zafira, Opel Vectra, Opel Meriva, Opel Signum | |
| In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Opel Astra might be a better choice in this respect. | |||
| Hydraulic tappets: | no | yes | |
| The Opel Astra engine has hydraulic tappets (lifters), providing quieter operation and no need for periodic adjustment, but they are more complex in design and can cause serious engine damage in case of failure. | |||
| Opel Signum 2005 1.8 engine: Reliable and easy to repair engine, spare parts available. Main problems - oil leaks from heat exchanger and faulty phase regulator. Opel Astra 2004 1.8 engine: Mechanically reliable engine, but the engine control unit can cause problems. | |||
Dimensions | |||
| Length: | 4.65 m | 4.25 m | |
| Width: | 1.80 m | 1.75 m | |
| Height: | 1.47 m | 1.46 m | |
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Opel Signum is larger. Opel Signum is 40 cm longer than the Opel Astra, 5 cm wider, while the height of Opel Signum is 1 cm higher. | |||
| Trunk capacity: | 365 litres | 380 litres | |
| Trunk max capacity: with rear seats folded down |
1410 litres | 1330 litres | |
| Despite its longer length, Opel Signum has 15 litres less trunk space than the Opel Astra. This could mean that the Opel Signum uses more space in the cabin, so the driver and passengers could be more spacious and comfortable. The maximum boot capacity (with all rear seats folded down) is larger in Opel Signum (by 80 litres). | |||
| Turning diameter: | 11.4 meters | 10.5 meters | |
| The turning circle of the Opel Signum is 0.9 metres more than that of the Opel Astra, which means Opel Signum can be harder to manoeuvre in tight streets and parking spaces. | |||
| Gross weight (kg): | 2`020 | 1`760 | |
| Safety: | no data | ||
| Quality: | above average | average | |
| Average price (€): | 2000 | 1200 | |
| Pros and Cons: |
Opel Signum has
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Opel Astra has
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