1997 BMW Z3 vs. 2007 Opel Signum
To start off, 2007 Opel Signum is newer by 10 year(s). Which means there will be less support and parts availability for 1997 BMW Z3. In addition, the cost of maintenance, including insurance, on 1997 BMW Z3 would be higher. At 3,245 cc (6 cylinders), 1997 BMW Z3 is equipped with a bigger engine. In terms of performance, 1997 BMW Z3 (333 HP @ 7500 RPM) has 185 more horse power than 2007 Opel Signum. (148 HP @ 4000 RPM). In normal driving conditions, 1997 BMW Z3 should accelerate faster than 2007 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 220 kg more than 1997 BMW Z3.
Because 1997 BMW Z3 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 1997 BMW Z3. However, in wet, icy, snow, or gravel driving conditions, 2007 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, 1997 BMW Z3 (355 Nm @ 3250 RPM) has 40 more torque (in Nm) than 2007 Opel Signum. (315 Nm @ 2000 RPM). This means 1997 BMW Z3 will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Signum.
Compare all specifications:
| 1997 BMW Z3 | 2007 Opel Signum | |
| Make | BMW | Opel |
| Model | Z3 | Signum |
| Year Released | 1997 | 2007 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3245 cc | 1909 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 333 HP | 148 HP |
| Engine RPM | 7500 RPM | 4000 RPM |
| Torque | 355 Nm | 315 Nm |
| Torque RPM | 3250 RPM | 2000 RPM |
| Engine Bore Size | 86.4 mm | 82 mm |
| Engine Stroke Size | 89.6 mm | 90.4 mm |
| Engine Compression Ratio | 10.5:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 249 km/hour | 209 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1393 kg | 1613 kg |
| Vehicle Length | 4030 mm | 4640 mm |
| Vehicle Width | 1750 mm | 1800 mm |
| Vehicle Height | 1270 mm | 1470 mm |
| Wheelbase Size | 2450 mm | 2840 mm |
| Fuel Tank Capacity | 51 L | 60 L |
