1991 Alfa Romeo 75 vs. 2004 Porsche 911
To start off, 2004 Porsche 911 is newer by 13 year(s). Which means there will be less support and parts availability for 1991 Alfa Romeo 75. In addition, the cost of maintenance, including insurance, on 1991 Alfa Romeo 75 would be higher. At 3,588 cc (6 cylinders), 2004 Porsche 911 is equipped with a bigger engine. In terms of performance, 2004 Porsche 911 (415 HP @ 6000 RPM) has 306 more horse power than 1991 Alfa Romeo 75. (109 HP @ 6000 RPM) In normal driving conditions, 2004 Porsche 911 should accelerate faster than 1991 Alfa Romeo 75. With that said, vehicle weight also plays an important factor in acceleration. 2004 Porsche 911 weights approximately 477 kg more than 1991 Alfa Romeo 75. 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, 2004 Porsche 911 (563 Nm) has 414 more torque (in Nm) than 1991 Alfa Romeo 75. (149 Nm). This means 2004 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1991 Alfa Romeo 75.
Compare all specifications:
| 1991 Alfa Romeo 75 | 2004 Porsche 911 | |
| Make | Alfa Romeo | Porsche |
| Model | 75 | 911 |
| Year Released | 1991 | 2004 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 1567 cc | 3588 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 109 HP | 415 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 149 Nm | 563 Nm |
| Engine Bore Size | 78 mm | 100 mm |
| Engine Stroke Size | 82 mm | 76 mm |
| Drive Type | Rear | Rear |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1060 kg | 1537 kg |
| Vehicle Length | 4340 mm | 4440 mm |
| Vehicle Width | 1670 mm | 1840 mm |
| Vehicle Height | 1410 mm | 1300 mm |
| Wheelbase Size | 2520 mm | 2360 mm |
| Fuel Tank Capacity | 49 L | 64 L |
