Opel Signum petrol engines consumes on average 0.8 litres more fuel per 100 km than Opel Vectra. On average, Opel Signum equipped with diesel engines consume 0.1 litres more fuel per 100 km than the Opel Vectra. This comparison does not take engine capacity into account, so to compare the fuel consumption of specific engines, select the car version!
Dimensions
Length:
4.65 m
4.61 m
Width:
1.80 m
1.80 m
Height:
1.47 m
1.46 m
Both cars are similar in size. Opel Signum is 4 cm longer than the Opel Vectra, width is practically the same , while the height of Opel Signum is 1 cm higher.
Trunk capacity:
365 litres
500 litres
Trunk max capacity: with rear seats folded down
1410 litres
1360 litres
Despite its longer length, Opel Signum has 135 litres less trunk space than the Opel Vectra. 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 50 litres).
Turning diameter:
11.4 meters
11 meters
The turning circle of the Opel Signum is 0.4 metres more than that of the Opel Vectra, which means Opel Signum can be harder to manoeuvre in tight streets and parking spaces.
