2005 Porsche 911 vs. 1986 Alfa Romeo 90
To start off, 2005 Porsche 911 is newer by 19 year(s). Which means there will be less support and parts availability for 1986 Alfa Romeo 90. In addition, the cost of maintenance, including insurance, on 1986 Alfa Romeo 90 would be higher. At 3,587 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (321 HP @ 4250 RPM) has 212 more horse power than 1986 Alfa Romeo 90. (109 HP @ 4200 RPM). In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1986 Alfa Romeo 90. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 235 kg more than 1986 Alfa Romeo 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1986 Alfa Romeo 90. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 911 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, 2005 Porsche 911 (370 Nm @ 4250 RPM) has 135 more torque (in Nm) than 1986 Alfa Romeo 90. (235 Nm @ 2300 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1986 Alfa Romeo 90.
Compare all specifications:
| 2005 Porsche 911 | 1986 Alfa Romeo 90 | |
| Make | Porsche | Alfa Romeo |
| Model | 911 | 90 |
| Year Released | 2005 | 1986 |
| Body Type | Convertible | Sedan |
| Engine Position | Rear | Front |
| Engine Size | 3587 cc | 2391 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | boxer | in-line |
| Horse Power | 321 HP | 109 HP |
| Engine RPM | 4250 RPM | 4200 RPM |
| Torque | 370 Nm | 235 Nm |
| Torque RPM | 4250 RPM | 2300 RPM |
| Engine Bore Size | 96 mm | 92 mm |
| Engine Stroke Size | 82.8 mm | 90 mm |
| Engine Compression Ratio | 11.3:1 | 22.0:1 |
| Top Speed | 285 km/hour | 178 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1485 kg | 1250 kg |
| Vehicle Length | 4440 mm | 4400 mm |
| Vehicle Width | 1780 mm | 1650 mm |
| Vehicle Height | 1310 mm | 1430 mm |
| Wheelbase Size | 2360 mm | 2520 mm |
| Fuel Tank Capacity | 64 L | 49 L |
