2005 Opel Signum vs. 2013 BMW 3 Series
To start off, 2013 BMW 3 Series is newer by 8 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 1,997 cc (6 cylinders), 2013 BMW 3 Series is equipped with a bigger engine. In terms of performance, 2013 BMW 3 Series (238 HP @ 5000 RPM) has 139 more horse power than 2005 Opel Signum. (99 HP @ 3120 RPM) In normal driving conditions, 2013 BMW 3 Series should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 3 Series weights approximately 36 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 2013 BMW 3 Series is all wheel drive (AWD), it will have significant more traction and grip than 2005 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2013 BMW 3 Series 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, 2013 BMW 3 Series (350 Nm @ 4800 RPM) has 120 more torque (in Nm) than 2005 Opel Signum. (230 Nm @ 1500 RPM). This means 2013 BMW 3 Series will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2013 BMW 3 Series 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. 2013 BMW 3 Series will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Opel Signum | 2013 BMW 3 Series | |
| Make | Opel | BMW |
| Model | Signum | 3 Series |
| Year Released | 2005 | 2013 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1993 cc | 1997 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 99 HP | 238 HP |
| Engine RPM | 3120 RPM | 5000 RPM |
| Torque | 230 Nm | 350 Nm |
| Torque RPM | 1500 RPM | 4800 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 90 mm |
| Engine Compression Ratio | 18.5:1 | 10:01 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | AWD |
| Transmission Type | Manual | 8-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1595 kg | 1631 kg |
| Vehicle Length | 4640 mm | 4636 mm |
| Vehicle Width | 1800 mm | 2031 mm |
| Vehicle Height | 1470 mm | 1434 mm |
| Wheelbase Size | 2740 mm | 2810 mm |
| Fuel Tank Capacity | 60 L | 60 L |
