2008 Infiniti M vs. 2005 Opel Signum
To start off, 2008 Infiniti M is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 4,493 cc (8 cylinders), 2008 Infiniti M is equipped with a bigger engine. In terms of performance, 2008 Infiniti M (325 HP @ 6400 RPM) has 205 more horse power than 2005 Opel Signum. (120 HP @ 6000 RPM). In normal driving conditions, 2008 Infiniti M should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2008 Infiniti M weights approximately 355 kg more than 2005 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Infiniti M is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2008 Infiniti M will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 Infiniti M (456 Nm @ 4000 RPM) has 291 more torque (in Nm) than 2005 Opel Signum. (165 Nm @ 3800 RPM). This means 2008 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2008 Infiniti M has automatic transmission and 2005 Opel Signum has manual transmission. 2005 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Infiniti M will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Infiniti M | 2005 Opel Signum | |
| Make | Infiniti | Opel |
| Model | M | Signum |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4493 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 325 HP | 120 HP |
| Engine RPM | 6400 RPM | 6000 RPM |
| Torque | 456 Nm | 165 Nm |
| Torque RPM | 4000 RPM | 3800 RPM |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1837 kg | 1482 kg |
| Vehicle Length | 4900 mm | 4640 mm |
| Vehicle Width | 1800 mm | 1800 mm |
| Vehicle Height | 1520 mm | 1470 mm |
| Wheelbase Size | 2910 mm | 2840 mm |
| Fuel Consumption Overall | 13.1 L/100km | 7.9 L/100km |
| Fuel Tank Capacity | 76 L | 60 L |
