1975 BMW 320 vs. 2005 BMW 630
To start off, 2005 BMW 630 is newer by 30 year(s). Which means there will be less support and parts availability for 1975 BMW 320. In addition, the cost of maintenance, including insurance, on 1975 BMW 320 would be higher. At 2,999 cc (6 cylinders), 2005 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 126 more horse power than 1975 BMW 320. (128 HP @ 6000 RPM) In normal driving conditions, 2005 BMW 630 should accelerate faster than 1975 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 630 weights approximately 714 kg more than 1975 BMW 320. 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, 2005 BMW 630 (300 Nm @ 2500 RPM) has 126 more torque (in Nm) than 1975 BMW 320. (174 Nm @ 4000 RPM). This means 2005 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 320.
Compare all specifications:
| 1975 BMW 320 | 2005 BMW 630 | |
| Make | BMW | BMW |
| Model | 320 | 630 |
| Year Released | 1975 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 2999 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 128 HP | 254 HP |
| Engine RPM | 6000 RPM | 6600 RPM |
| Torque | 174 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 2500 RPM |
| Engine Bore Size | 80 mm | 85 mm |
| Engine Stroke Size | 66 mm | 88 mm |
| Engine Compression Ratio | 9.8:1 | 10.7:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 195 km/hour | 250 km/hour |
| Acceleration 0-100mph | 11.2 seconds | 6.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1050 kg | 1764 kg |
| Vehicle Length | 4330 mm | 4830 mm |
| Vehicle Width | 1650 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1380 mm |
| Wheelbase Size | 2580 mm | 2670 mm |
