2007 BMW 325 vs. 2003 Opel Signum
To start off, 2007 BMW 325 is newer by 4 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 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2007 BMW 325 (215 HP @ 6500 RPM) has 40 more horse power than 2003 Opel Signum. (175 HP @ 5500 RPM). In normal driving conditions, 2007 BMW 325 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 85 kg more than 2007 BMW 325.
Because 2007 BMW 325 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 2007 BMW 325. 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 (370 Nm @ 1900 RPM) has 120 more torque (in Nm) than 2007 BMW 325. (250 Nm @ 2750 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 325.
Compare all specifications:
| 2007 BMW 325 | 2003 Opel Signum | |
| Make | BMW | Opel |
| Model | 325 | Signum |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 175 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 250 Nm | 370 Nm |
| Torque RPM | 2750 RPM | 1900 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1490 kg | 1575 kg |
| Vehicle Length | 4530 mm | 4640 mm |
| Vehicle Width | 1430 mm | 1800 mm |
| Vehicle Height | 1820 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2840 mm |
