2007 Alpina B3 vs. 2003 Opel Signum
To start off, 2007 Alpina B3 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 3,173 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2007 Alpina B3 (360 HP @ 5500 RPM) has 152 more horse power than 2003 Opel Signum. (208 HP @ 6200 RPM). In normal driving conditions, 2007 Alpina B3 should accelerate faster than 2003 Opel Signum.
Because 2007 Alpina B3 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 Alpina B3. 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, 2007 Alpina B3 (501 Nm @ 3800 RPM) has 201 more torque (in Nm) than 2003 Opel Signum. (300 Nm @ 4000 RPM). This means 2007 Alpina B3 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum. 2007 Alpina B3 has automatic transmission and 2003 Opel Signum has manual transmission. 2003 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Alpina B3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Alpina B3 | 2003 Opel Signum | |
| Make | Alpina | Opel |
| Model | B3 | Signum |
| Year Released | 2007 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3001 cc | 3173 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 360 HP | 208 HP |
| Engine RPM | 5500 RPM | 6200 RPM |
| Torque | 501 Nm | 300 Nm |
| Torque RPM | 3800 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 285 km/hour | 237 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4530 mm | 4640 mm |
| Vehicle Width | 1820 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2770 mm | 2740 mm |
