1981 Alfa Romeo Spider vs. 2007 BMW Convertible
To start off, 2007 BMW Convertible is newer by 26 year(s). Which means there will be less support and parts availability for 1981 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1981 Alfa Romeo Spider would be higher. At 4,799 cc (8 cylinders), 2007 BMW Convertible is equipped with a bigger engine. In terms of performance, 2007 BMW Convertible (362 HP @ 6300 RPM) has 259 more horse power than 1981 Alfa Romeo Spider. (103 HP @ 5500 RPM) In normal driving conditions, 2007 BMW Convertible should accelerate faster than 1981 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 850 kg more than 1981 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, 2007 BMW Convertible (490 Nm @ 3400 RPM) has 345 more torque (in Nm) than 1981 Alfa Romeo Spider. (145 Nm @ 4500 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo Spider.
Compare all specifications:
| 1981 Alfa Romeo Spider | 2007 BMW Convertible | |
| Make | Alfa Romeo | BMW |
| Model | Spider | Convertible |
| Year Released | 1981 | 2007 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 4799 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 103 HP | 362 HP |
| Engine RPM | 5500 RPM | 6300 RPM |
| Torque | 145 Nm | 490 Nm |
| Torque RPM | 4500 RPM | 3400 RPM |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1000 kg | 1850 kg |
| Vehicle Length | 4130 mm | 4830 mm |
| Vehicle Width | 1640 mm | 1380 mm |
| Vehicle Height | 1300 mm | 1860 mm |
| Wheelbase Size | 2260 mm | 2790 mm |
