1981 Alfa Romeo Alfa 6 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 Alfa 6. In addition, the cost of maintenance, including insurance, on 1981 Alfa Romeo Alfa 6 would be higher. At 2,170 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (168 HP @ 6250 RPM) has 35 more horse power than 1981 Alfa Romeo Alfa 6. (133 HP @ 5600 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1981 Alfa Romeo Alfa 6. With that said, vehicle weight also plays an important factor in acceleration. 1981 Alfa Romeo Alfa 6 weights approximately 145 kg more than 2006 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, 2006 BMW Z4 (210 Nm @ 3500 RPM) has 32 more torque (in Nm) than 1981 Alfa Romeo Alfa 6. (178 Nm @ 4500 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo Alfa 6. 2006 BMW Z4 has automatic transmission and 1981 Alfa Romeo Alfa 6 has manual transmission. 1981 Alfa Romeo Alfa 6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 Alfa Romeo Alfa 6 | 2006 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | Alfa 6 | Z4 |
| Year Released | 1981 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 2170 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 133 HP | 168 HP |
| Engine RPM | 5600 RPM | 6250 RPM |
| Torque | 178 Nm | 210 Nm |
| Torque RPM | 4500 RPM | 3500 RPM |
| Engine Bore Size | 80 mm | 80 mm |
| Engine Stroke Size | 66.2 mm | 72 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Weight | 1470 kg | 1325 kg |
| Vehicle Length | 4770 mm | 4100 mm |
| Vehicle Width | 1690 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1310 mm |
| Wheelbase Size | 2610 mm | 2500 mm |
