2003 Opel Signum vs. 2012 BMW 328
To start off, 2012 BMW 328 is newer by 9 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,979 cc (6 cylinders), 2012 BMW 328 is equipped with a bigger engine. In terms of performance, 2012 BMW 328 (230 HP @ 6500 RPM) has 55 more horse power than 2003 Opel Signum. (175 HP @ 4000 RPM) In normal driving conditions, 2012 BMW 328 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 328 weights approximately 65 kg more than 2003 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2012 BMW 328 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 2012 BMW 328. However, in wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Opel Signum (371 Nm @ 1900 RPM) has 100 more torque (in Nm) than 2012 BMW 328. (271 Nm @ 2750 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2012 BMW 328.
Compare all specifications:
| 2003 Opel Signum | 2012 BMW 328 | |
| Make | Opel | BMW |
| Model | Signum | 328 |
| Year Released | 2003 | 2012 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 230 HP |
| Engine RPM | 4000 RPM | 6500 RPM |
| Torque | 371 Nm | 271 Nm |
| Torque RPM | 1900 RPM | 2750 RPM |
| Engine Bore Size | 87.5 mm | 89.6 mm |
| Engine Stroke Size | 82 mm | 84 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | 6-speed manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1670 kg | 1735 kg |
| Vehicle Length | 4640 mm | 4624 mm |
| Vehicle Width | 1800 mm | 1811 mm |
| Vehicle Height | 1470 mm | 1384 mm |
| Wheelbase Size | 2700 mm | 2810 mm |
| Fuel Tank Capacity | 60 L | 57 L |
