1976 BMW 630 vs. 2005 BMW 525
To start off, 2005 BMW 525 is newer by 29 year(s). Which means there will be less support and parts availability for 1976 BMW 630. In addition, the cost of maintenance, including insurance, on 1976 BMW 630 would be higher. At 2,986 cc (6 cylinders), 1976 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 525 (215 HP @ 6500 RPM) has 42 more horse power than 1976 BMW 630. (173 HP @ 5500 RPM) In normal driving conditions, 2005 BMW 525 should accelerate faster than 1976 BMW 630. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 525 weights approximately 228 kg more than 1976 BMW 630. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW 525 is four wheel drive (4WD), it will have significant more traction and grip than 1976 BMW 630. In wet, icy, snow, or gravel driving conditions, 2005 BMW 525 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, 1976 BMW 630 (251 Nm @ 4500 RPM) has 1 more torque (in Nm) than 2005 BMW 525. (250 Nm @ 2750 RPM). This means 1976 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 525.
Compare all specifications:
| 1976 BMW 630 | 2005 BMW 525 | |
| Make | BMW | BMW |
| Model | 630 | 525 |
| Year Released | 1976 | 2005 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 173 HP | 215 HP |
| Engine RPM | 5500 RPM | 6500 RPM |
| Torque | 251 Nm | 250 Nm |
| Torque RPM | 4500 RPM | 2750 RPM |
| Engine Bore Size | 89 mm | 82 mm |
| Engine Stroke Size | 80 mm | 78.8 mm |
| Engine Compression Ratio | 8.0:1 | 11.0:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1458 kg | 1686 kg |
| Vehicle Length | 4760 mm | 4850 mm |
| Vehicle Width | 1760 mm | 1850 mm |
| Vehicle Height | 1390 mm | 1490 mm |
| Wheelbase Size | 2630 mm | 2890 mm |
