2009 Acura RDX vs. 1981 Alfa Romeo Spider
To start off, 2009 Acura RDX is newer by 28 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 2,300 cc (4 cylinders), 2009 Acura RDX is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (240 HP @ 6000 RPM) has 137 more horse power than 1981 Alfa Romeo Spider. (103 HP @ 5500 RPM). In normal driving conditions, 2009 Acura RDX should accelerate faster than 1981 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 2009 Acura RDX weights approximately 450 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.
Because 2009 Acura RDX is four wheel drive (4WD), it will have significant more traction and grip than 1981 Alfa Romeo Spider. In wet, icy, snow, or gravel driving conditions, 2009 Acura RDX will offer significantly more control. 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, 2009 Acura RDX (353 Nm @ 4500 RPM) has 208 more torque (in Nm) than 1981 Alfa Romeo Spider. (145 Nm @ 4500 RPM). This means 2009 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 1981 Alfa Romeo Spider.
Compare all specifications:
| 2009 Acura RDX | 1981 Alfa Romeo Spider | |
| Make | Acura | Alfa Romeo |
| Model | RDX | Spider |
| Year Released | 2009 | 1981 |
| Body Type | SUV | Roadster |
| Engine Position | Front | Front |
| Engine Size | 2300 cc | 1570 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 240 HP | 103 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 353 Nm | 145 Nm |
| Torque RPM | 4500 RPM | 4500 RPM |
| Engine Compression Ratio | 11.0:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1450 kg | 1000 kg |
| Vehicle Length | 4600 mm | 4130 mm |
| Vehicle Width | 1880 mm | 1640 mm |
| Vehicle Height | 1660 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2260 mm |
