2009 BMW Z4 vs. 1991 Opel Omega
To start off, 2009 BMW Z4 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Opel Omega. In addition, the cost of maintenance, including insurance, on 1991 Opel Omega would be higher. At 1,998 cc (4 cylinders), 1991 Opel Omega is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (148 HP @ 6200 RPM) has 38 more horse power than 1991 Opel Omega. (110 HP @ 5200 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 1991 Opel Omega. With that said, vehicle weight also plays an important factor in acceleration. 1991 Opel Omega weights approximately 35 kg more than 2009 BMW Z4.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2009 BMW Z4 (200 Nm @ 3600 RPM) has 38 more torque (in Nm) than 1991 Opel Omega. (162 Nm @ 4600 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Omega.
Compare all specifications:
| 2009 BMW Z4 | 1991 Opel Omega | |
| Make | BMW | Opel |
| Model | Z4 | Omega |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 110 HP |
| Engine RPM | 6200 RPM | 5200 RPM |
| Torque | 200 Nm | 162 Nm |
| Torque RPM | 3600 RPM | 4600 RPM |
| Engine Compression Ratio | 10.5:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1295 kg | 1330 kg |
| Vehicle Length | 4100 mm | 4740 mm |
| Vehicle Width | 1310 mm | 1780 mm |
| Vehicle Height | 1790 mm | 1490 mm |
| Wheelbase Size | 2500 mm | 2740 mm |
| Fuel Tank Capacity | 55 L | 70 L |
