Opel Signum engine produces 10 HP more power than Volkswagen Passat, the torque is the same for both cars. Despite the higher power, Opel Signum reaches 100 km/h speed 3.6 seconds later.
Fuel consumption
Fuel consumption (l/100km):
7.0
6.5
Real fuel consumption:
6.9 l/100km
6.8 l/100km
The Volkswagen Passat is a better choice when it comes to fuel economy. By specification Opel Signum consumes 0.5 litres more fuel per 100 km than the Volkswagen Passat, which means that if you drive 15,000 km in a year, the Opel Signum could require 75 litres more fuel. By comparing actual fuel consumption based on user reports, Opel Signum consumes 0.1 litres more fuel per 100 km than the Volkswagen Passat.
Fuel tank capacity:
60 litres
70 litres
Full fuel tank distance:
850 km in combined cycle
1070 km in combined cycle
860 km with real consumption
1020 km with real consumption
Volkswagen Passat gets more mileage on one fuel tank.
Dimensions
Length:
4.65 m
4.77 m
Width:
1.80 m
1.82 m
Height:
1.47 m
1.52 m
Opel Signum is smaller. Opel Signum is 12 cm shorter than the Volkswagen Passat, 2 cm narrower, while the height of Opel Signum is 5 cm lower.
Trunk capacity:
365 litres
603 litres
Trunk max capacity: with rear seats folded down
1410 litres
no data
Volkswagen Passat has more luggage space. Opel Signum has 238 litres less trunk space than the Volkswagen Passat.
Opel Signum has fewer problems. According to annual technical inspection data Volkswagen Passat has serious deffects in 10 percent more cases than Opel Signum, so Opel Signum quality is probably slightly better
