1975 BMW 315 vs. 2007 BMW X3
To start off, 2007 BMW X3 is newer by 32 year(s). Which means there will be less support and parts availability for 1975 BMW 315. In addition, the cost of maintenance, including insurance, on 1975 BMW 315 would be higher. At 2,996 cc (6 cylinders), 2007 BMW X3 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (268 HP @ 6600 RPM) has 193 more horse power than 1975 BMW 315. (75 HP @ 5800 RPM) In normal driving conditions, 2007 BMW X3 should accelerate faster than 1975 BMW 315. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 805 kg more than 1975 BMW 315. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 1975 BMW 315. In wet, icy, snow, or gravel driving conditions, 2007 BMW X3 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, 2007 BMW X3 (315 Nm @ 2750 RPM) has 205 more torque (in Nm) than 1975 BMW 315. (110 Nm @ 3200 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 315.
Compare all specifications:
| 1975 BMW 315 | 2007 BMW X3 | |
| Make | BMW | BMW |
| Model | 315 | X3 |
| Year Released | 1975 | 2007 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 1574 cc | 2996 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 268 HP |
| Engine RPM | 5800 RPM | 6600 RPM |
| Torque | 110 Nm | 315 Nm |
| Torque RPM | 3200 RPM | 2750 RPM |
| Engine Bore Size | 84 mm | 85 mm |
| Engine Stroke Size | 71 mm | 88 mm |
| Engine Compression Ratio | 9.5:1 | 10.7:1 |
| Top Speed | 154 km/hour | 210 km/hour |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1010 kg | 1815 kg |
| Vehicle Length | 4360 mm | 4570 mm |
| Vehicle Width | 1620 mm | 1680 mm |
| Vehicle Height | 1390 mm | 1860 mm |
| Wheelbase Size | 2510 mm | 2800 mm |
