1981 Alfa Romeo GTV6 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 25 year(s). Which means there will be less support and parts availability for 1981 Alfa Romeo GTV6. In addition, the cost of maintenance, including insurance, on 1981 Alfa Romeo GTV6 would be higher. At 2,979 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (229 HP @ 5900 RPM) has 71 more horse power than 1981 Alfa Romeo GTV6. (158 HP @ 5600 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1981 Alfa Romeo GTV6. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 420 kg more than 1981 Alfa Romeo GTV6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 BMW Z4 (300 Nm @ 3500 RPM) has 86 more torque (in Nm) than 1981 Alfa Romeo GTV6. (214 Nm @ 4000 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo GTV6.
Compare all specifications:
| 1981 Alfa Romeo GTV6 | 2006 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | GTV6 | Z4 |
| Year Released | 1981 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 229 HP |
| Engine RPM | 5600 RPM | 5900 RPM |
| Torque | 214 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 88 mm | 84 mm |
| Engine Stroke Size | 68.3 mm | 90 mm |
| Top Speed | 212 km/hour | 250 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1210 kg | 1630 kg |
| Vehicle Length | 4270 mm | 4570 mm |
| Vehicle Width | 1670 mm | 1790 mm |
| Vehicle Height | 1340 mm | 1680 mm |
| Wheelbase Size | 2410 mm | 2500 mm |
| Fuel Tank Capacity | 75 L | 55 L |
