Mazda 6 2002 vs Opel Signum 2003

 
Mazda 6
2002 - 2005
Opel Signum
2003 - 2005
Gearbox: ManualManual
Engine: 2.0 Petrol2.2 Petrol
Camshaft drive: Timing chainTiming chain

Performance

Power: 141 HP155 HP
Torque: 181 NM220 NM
Acceleration 0-100 km/h: 9.9 seconds9.8 seconds
Mazda 6 engine produces 14 HP less power than Opel Signum, whereas torque is 39 NM less than Opel Signum. Due to the lower power, Mazda 6 reaches 100 km/h speed 0.1 seconds later.

Fuel consumption

Fuel consumption (l/100km): 8.58.1
Real fuel consumption: 8.4 l/100km8.9 l/100km
The Mazda 6 is a better choice in terms of fuel economy based on user-reported consumption, although the specification shows otherwise.
By specification Mazda 6 consumes 0.4 litres more fuel per 100 km than the Opel Signum, which means that if you drive 15,000 km in a year, the Mazda 6 could require 60 litres more fuel.
But when we compare the real fuel consumption reported by users, Mazda 6 consumes 0.5 litres less fuel per 100 km than the Opel Signum.
Fuel tank capacity: 64 litres60 litres
Full fuel tank distance: 750 km in combined cycle740 km in combined cycle
960 km on highway900 km on highway
760 km with real consumption670 km with real consumption

Engines

Average engine lifespan: 420'000 km350'000 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 Mazda 6 engine could be longer.
Engine production duration: 13 years7 years
Engine spread: Installed on at least 4 other car models, including Mazda 3, Mazda MX-5, Mazda 5, Mazda CX-5Installed on at least 2 other car models, including Opel Zafira, Opel Vectra
In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Mazda 6 might be a better choice in this respect.
Hydraulic tappets: noyes
The Opel Signum 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: 4.67 m4.64 m
Width: 1.78 m1.80 m
Height: 1.44 m1.47 m
Both cars are similar in size. Mazda 6 is 3 cm longer than the Opel Signum, 2 cm narrower, while the height of Mazda 6 is 3 cm lower.
Trunk capacity: 492 litres365 litres
Trunk max capacity:
with rear seats folded down
no data1410 litres
Mazda 6 has more luggage capacity.
Mazda 6 has 127 litres more trunk space than the Opel Signum.
Turning diameter: 10.8 meters11.2 meters
The turning circle of the Mazda 6 is 0.4 metres less than that of the Opel Signum.
Gross weight (kg): 1`8552`050
Safety:
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 Mazda 6, so Opel Signum quality could be a bit better.
Average price (€): 10001400
Rating in user reviews: 6.3/10 7.6/10
Pros and Cons: Mazda 6 has
  • longer expected engine lifespan
  • roomier boot
  • lower price
Opel Signum has
  • more power
  • higher ratings in user reviews
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