2011 BMW Z4 vs. 2001 Opel Signum
To start off, 2011 BMW Z4 is newer by 10 year(s). Which means there will be less support and parts availability for 2001 Opel Signum. In addition, the cost of maintenance, including insurance, on 2001 Opel Signum would be higher. At 3,173 cc (6 cylinders), 2001 Opel Signum is equipped with a bigger engine. In terms of performance, 2011 BMW Z4 (244 HP @ 5000 RPM) has 36 more horse power than 2001 Opel Signum. (208 HP @ 6200 RPM). In normal driving conditions, 2011 BMW Z4 should accelerate faster than 2001 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2001 Opel Signum weights approximately 120 kg more than 2011 BMW Z4.
Because 2011 BMW Z4 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 2011 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2001 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, 2011 BMW Z4 (350 Nm @ 1500 RPM) has 50 more torque (in Nm) than 2001 Opel Signum. (300 Nm @ 4000 RPM). This means 2011 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2001 Opel Signum. 2001 Opel Signum has automatic transmission and 2011 BMW Z4 has manual transmission. 2011 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2001 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2011 BMW Z4 | 2001 Opel Signum | |
| Make | BMW | Opel |
| Model | Z4 | Signum |
| Year Released | 2011 | 2001 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 3173 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 244 HP | 208 HP |
| Engine RPM | 5000 RPM | 6200 RPM |
| Torque | 350 Nm | 300 Nm |
| Torque RPM | 1500 RPM | 4000 RPM |
| Engine Bore Size | 90.1 mm | 87.5 mm |
| Engine Stroke Size | 84 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 250 km/hour | 237 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1490 kg | 1610 kg |
| Vehicle Length | 4239 mm | 4640 mm |
| Vehicle Width | 1791 mm | 1800 mm |
| Vehicle Height | 1290 mm | 1470 mm |
| Wheelbase Size | 2497 mm | 2640 mm |
| Fuel Consumption Overall | 6.8 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 55 L | 52 L |
