2008 BMW 318 vs. 2006 Opel Signum
To start off, 2008 BMW 318 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Opel Signum. In addition, the cost of maintenance, including insurance, on 2006 Opel Signum would be higher. At 3,175 cc (6 cylinders), 2006 Opel Signum is equipped with a bigger engine. In terms of performance, 2006 Opel Signum (208 HP @ 6200 RPM) has 60 more horse power than 2008 BMW 318. (148 HP @ 6200 RPM) In normal driving conditions, 2006 Opel Signum should accelerate faster than 2008 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 215 kg more than 2008 BMW 318. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 BMW 318 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2008 BMW 318. However, in wet, icy, snow, or gravel driving conditions, 2006 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 Opel Signum (301 Nm @ 4000 RPM) has 100 more torque (in Nm) than 2008 BMW 318. (201 Nm @ 3600 RPM). This means 2006 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 318.
Compare all specifications:
| 2008 BMW 318 | 2006 Opel Signum | |
| Make | BMW | Opel |
| Model | 318 | Signum |
| Year Released | 2008 | 2006 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 3175 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 208 HP |
| Engine RPM | 6200 RPM | 6200 RPM |
| Torque | 201 Nm | 301 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 90 mm | 88 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 219 km/hour | 237 km/hour |
| Acceleration 0-100mph | 9.2 seconds | 7.9 seconds |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1395 kg | 1610 kg |
| Vehicle Length | 4490 mm | 4640 mm |
| Vehicle Width | 1760 mm | 1800 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Consumption Overall | 7.4 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 63 L | 60 L |
