1983 Alfa Romeo Spider vs. 2005 BMW Z4
To start off, 2005 BMW Z4 is newer by 22 year(s). Which means there will be less support and parts availability for 1983 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1983 Alfa Romeo Spider would be higher. At 2,489 cc (6 cylinders), 2005 BMW Z4 is equipped with a bigger engine. In terms of performance, 2005 BMW Z4 (184 HP @ 6100 RPM) has 58 more horse power than 1983 Alfa Romeo Spider. (126 HP @ 5400 RPM) In normal driving conditions, 2005 BMW Z4 should accelerate faster than 1983 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 355 kg more than 1983 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, 2005 BMW Z4 (237 Nm @ 3500 RPM) has 54 more torque (in Nm) than 1983 Alfa Romeo Spider. (183 Nm @ 4000 RPM). This means 2005 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1983 Alfa Romeo Spider.
Compare all specifications:
| 1983 Alfa Romeo Spider | 2005 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | Spider | Z4 |
| Year Released | 1983 | 2005 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1962 cc | 2489 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 126 HP | 184 HP |
| Engine RPM | 5400 RPM | 6100 RPM |
| Torque | 183 Nm | 237 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 88.5 mm | 75 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1040 kg | 1395 kg |
| Vehicle Length | 4250 mm | 4100 mm |
| Vehicle Width | 1640 mm | 1790 mm |
| Vehicle Height | 1300 mm | 1310 mm |
| Wheelbase Size | 2260 mm | 2500 mm |
| Fuel Tank Capacity | 50 L | 55 L |
