1963 Alfa Romeo Spider vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 43 year(s). Which means there will be less support and parts availability for 1963 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1963 Alfa Romeo Spider would be higher. At 2,580 cc (6 cylinders), 1963 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (189 HP @ 6000 RPM) has 26 more horse power than 1963 Alfa Romeo Spider. (163 HP @ 5900 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1963 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 5 kg more than 1963 Alfa Romeo Spider. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2006 BMW Z4 (245 Nm @ 3500 RPM) has 25 more torque (in Nm) than 1963 Alfa Romeo Spider. (220 Nm @ 4000 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1963 Alfa Romeo Spider.
Compare all specifications:
| 1963 Alfa Romeo Spider | 2006 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | Spider | Z4 |
| Year Released | 1963 | 2006 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2580 cc | 2492 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 163 HP | 189 HP |
| Engine RPM | 5900 RPM | 6000 RPM |
| Torque | 220 Nm | 245 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 84 mm |
| Engine Stroke Size | 79.6 mm | 75 mm |
| Engine Compression Ratio | 9.2:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1330 kg | 1335 kg |
| Vehicle Length | 4510 mm | 4100 mm |
| Vehicle Width | 1610 mm | 1790 mm |
| Vehicle Height | 1390 mm | 1310 mm |
| Wheelbase Size | 2510 mm | 2500 mm |
| Fuel Tank Capacity | 52 L | 55 L |
