1975 Alfa Romeo Spider vs. 2004 BMW Z4
To start off, 2004 BMW Z4 is newer by 29 year(s). Which means there will be less support and parts availability for 1975 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1975 Alfa Romeo Spider would be higher. At 2,983 cc (6 cylinders), 2004 BMW Z4 is equipped with a bigger engine. In terms of performance, 2004 BMW Z4 (225 HP @ 5900 RPM) has 93 more horse power than 1975 Alfa Romeo Spider. (132 HP @ 5400 RPM) In normal driving conditions, 2004 BMW Z4 should accelerate faster than 1975 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW Z4 weights approximately 355 kg more than 1975 Alfa Romeo Spider. 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, 2004 BMW Z4 (300 Nm @ 3500 RPM) has 119 more torque (in Nm) than 1975 Alfa Romeo Spider. (181 Nm @ 4000 RPM). This means 2004 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1975 Alfa Romeo Spider.
Compare all specifications:
| 1975 Alfa Romeo Spider | 2004 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | Spider | Z4 |
| Year Released | 1975 | 2004 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2983 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 132 HP | 225 HP |
| Engine RPM | 5400 RPM | 5900 RPM |
| Torque | 181 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Compression Ratio | 9.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1040 kg | 1395 kg |
| Vehicle Length | 4130 mm | 4100 mm |
| Vehicle Width | 1640 mm | 1790 mm |
| Vehicle Height | 1300 mm | 1310 mm |
| Wheelbase Size | 2260 mm | 2500 mm |
