Opel Astra 2004 vs Opel Signum 2003

Select specific versions of each model (by engine capacity, power, drivetrain and gearbox) for an accurate comparison

Opel Astra
2004 - 2007
Opel Signum
2003 - 2005
Gearbox: Manual/AutomaticManual/Automatic
Engines: 1.4 - 2.01.8 - 3.2


Power: 80 - 200 HP101 - 211 HP
Torque: 125 - 320 NM167 - 370 NM
Acceleration 0-100 km/h: 7.9 - 15 seconds7.9 - 14 seconds
Select a car version for a more accurate comparison!

Fuel consumption

Fuel consumption (l/100km): 4.9 - 9.45.9 - 10.7
Opel Astra petrol engines consumes on average 1.5 litres less fuel per 100 km than Opel Signum. On average, Opel Astra equipped with diesel engines consume 1.4 litres less fuel per 100 km than the Opel Signum.
This comparison does not take engine capacity into account, so to compare the fuel consumption of specific engines, select the car version!


Length: 4.25 m4.64 m
Width: 1.75 m1.80 m
Height: 1.46 m1.47 m
Opel Astra is smaller.
Opel Astra is 39 cm shorter than the Opel Signum, 5 cm narrower, while the height of Opel Astra is 1 cm lower.
Trunk capacity: 380 litres875 litres
Trunk max capacity:
with rear seats folded down
1330 litres1410 litres
Opel Signum has more luggage space.
Opel Astra has 495 litres less trunk space than the Opel Signum. The maximum boot capacity (with all rear seats folded down) is larger in Opel Signum (by 80 litres).
Turning diameter: 10.5 meters11.2 meters
The turning circle of the Opel Astra is 0.7 metres less than that of the Opel Signum, which means Opel Astra can be easier to manoeuvre in tight streets and parking spaces.
Gross weight (kg): ~ 1`799~ 2`109

Average price (€): 14001400
Rating in user reviews: 7.5/10 7.6/10
Pros and Cons: Opel Astra has
  • lower fuel consumption
  • better manoeuvrability
  • higher safety
Opel Signum has
  • roomier boot
  • fewer faults
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