1973 BMW 525 vs. 2009 BMW 630
To start off, 2009 BMW 630 is newer by 36 year(s). Which means there will be less support and parts availability for 1973 BMW 525. In addition, the cost of maintenance, including insurance, on 1973 BMW 525 would be higher. At 2,996 cc (6 cylinders), 2009 BMW 630 is equipped with a bigger engine. In terms of performance, 2009 BMW 630 (268 HP @ 6700 RPM) has 125 more horse power than 1973 BMW 525. (143 HP @ 6000 RPM) In normal driving conditions, 2009 BMW 630 should accelerate faster than 1973 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 630 weights approximately 438 kg more than 1973 BMW 525. 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, 2009 BMW 630 (320 Nm @ 2750 RPM) has 112 more torque (in Nm) than 1973 BMW 525. (208 Nm @ 4000 RPM). This means 2009 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW 525.
Compare all specifications:
| 1973 BMW 525 | 2009 BMW 630 | |
| Make | BMW | BMW |
| Model | 525 | 630 |
| Year Released | 1973 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 143 HP | 268 HP |
| Engine RPM | 6000 RPM | 6700 RPM |
| Torque | 208 Nm | 320 Nm |
| Torque RPM | 4000 RPM | 2750 RPM |
| Engine Bore Size | 86 mm | 85 mm |
| Engine Stroke Size | 71.6 mm | 88 mm |
| Engine Compression Ratio | 9.0:1 | 12.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 192 km/hour | 250 km/hour |
| Acceleration 0-100mph | 10.5 seconds | 6.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1380 kg | 1818 kg |
| Vehicle Length | 4630 mm | 4830 mm |
| Vehicle Width | 1700 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1380 mm |
| Wheelbase Size | 2640 mm | 2790 mm |
| Fuel Tank Capacity | 70 L | 70 L |
