2003 Porsche 911 vs. 1971 Riley 4
To start off, 2003 Porsche 911 is newer by 32 year(s). Which means there will be less support and parts availability for 1971 Riley 4. In addition, the cost of maintenance, including insurance, on 1971 Riley 4 would be higher. At 3,596 cc (6 cylinders), 2003 Porsche 911 is equipped with a bigger engine. In terms of performance, 2003 Porsche 911 (340 HP @ 6800 RPM) has 273 more horse power than 1971 Riley 4. (67 HP @ 5000 RPM). In normal driving conditions, 2003 Porsche 911 should accelerate faster than 1971 Riley 4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Porsche 911 weights approximately 232 kg more than 1971 Riley 4. 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, 2003 Porsche 911 (370 Nm @ 4800 RPM) has 249 more torque (in Nm) than 1971 Riley 4. (121 Nm @ 2500 RPM). This means 2003 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1971 Riley 4.
Compare all specifications:
| 2003 Porsche 911 | 1971 Riley 4 | |
| Make | Porsche | Riley |
| Model | 911 | 4 |
| Year Released | 2003 | 1971 |
| Body Type | Coupe | Sedan |
| Engine Position | Rear | Front |
| Engine Size | 3596 cc | 1622 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | boxer | in-line |
| Horse Power | 340 HP | 67 HP |
| Engine RPM | 6800 RPM | 5000 RPM |
| Torque | 370 Nm | 121 Nm |
| Torque RPM | 4800 RPM | 2500 RPM |
| Engine Bore Size | 96 mm | 76.3 mm |
| Engine Stroke Size | 82.8 mm | 88.9 mm |
| Engine Compression Ratio | 11.3:1 | 8.3:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1380 kg | 1148 kg |
| Vehicle Length | 4440 mm | 4540 mm |
| Vehicle Width | 1780 mm | 1620 mm |
| Vehicle Height | 1300 mm | 1510 mm |
| Wheelbase Size | 2360 mm | 2530 mm |
| Fuel Tank Capacity | 64 L | 45 L |
