Opel Signum 2007 vs Opel Astra 2004

 
Opel Signum
2007 - 2008
Opel Astra
2004 - 2007
Gearbox: ManualManual
Engine: 1.9 Diesel1.9 Diesel
Camshaft drive: Timing beltTiming belt

Performance

Power: 120 HP150 HP
Torque: 280 NM320 NM
Acceleration 0-100 km/h: 12 seconds8.9 seconds
Opel Astra is a more dynamic driving.
Opel Signum engine produces 30 HP less power than Opel Astra, whereas torque is 40 NM less than Opel Astra. Due to the lower power, Opel Signum reaches 100 km/h speed 3.1 seconds later.

Fuel consumption

Fuel consumption (l/100km): 5.95.8
Real fuel consumption: 5.9 l/100km6.5 l/100km
The Opel Signum 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 more fuel per 100 km than the Opel Astra, which means that if you drive 15,000 km in a year, the Opel Signum could require 15 litres more fuel.
But when we compare the real fuel consumption reported by users, Opel Signum consumes 0.6 litres less fuel per 100 km than the Opel Astra.
Fuel tank capacity: 60 litres52 litres
Full fuel tank distance: 1010 km in combined cycle890 km in combined cycle
1010 km with real consumption800 km with real consumption
Opel Signum gets more mileage on one fuel tank.

Engines

Average engine lifespan: 470'000 km420'000 km
Engine resource depends largely on regular maintenance and the quality of the oils and fuels used, but under equal conditions the average life of a Opel Signum engine could be longer.
Engine production duration: 6 years6 years
Engine spread: Installed on at least 3 other car models, including Opel Astra, Opel Zafira, Opel VectraInstalled on at least 3 other car models, including Opel Zafira, Opel Vectra, Opel Signum
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts.
Hydraulic tappets: noyes
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.

Dimensions

Length: 4.65 m4.25 m
Width: 1.80 m1.75 m
Height: 1.47 m1.46 m
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 litres380 litres
Trunk max capacity:
with rear seats folded down
1410 litres1330 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 meters10.5 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): no data1`885
Safety: no data
Quality:
average

average
Opel Signum has slightly fewer faults.
Deffect rate in annual technical inspection is similar for both cars, it's slightly higher for Opel Astra, so Opel Signum quality could be a bit better.
Average price (€): 20001400
Pros and Cons: Opel Signum has
  • more full fuel tank mileage
  • longer expected engine lifespan
Opel Astra has
  • more power
  • more dynamic
  • better manoeuvrability
  • lower price
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