1975 BMW 315 vs. 2008 Daihatsu Sirion
To start off, 2008 Daihatsu Sirion is newer by 33 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 1,574 cc (4 cylinders), 1975 BMW 315 is equipped with a bigger engine. In terms of performance, 2008 Daihatsu Sirion (90 HP @ 6000 RPM) has 15 more horse power than 1975 BMW 315. (75 HP @ 5800 RPM) In normal driving conditions, 2008 Daihatsu Sirion should accelerate faster than 1975 BMW 315. With that said, vehicle weight also plays an important factor in acceleration. 1975 BMW 315 weights approximately 30 kg more than 2008 Daihatsu Sirion.
Because 2008 Daihatsu Sirion 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, 2008 Daihatsu Sirion 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, 2008 Daihatsu Sirion (120 Nm @ 4400 RPM) has 10 more torque (in Nm) than 1975 BMW 315. (110 Nm @ 3200 RPM). This means 2008 Daihatsu Sirion will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 315.
Compare all specifications:
| 1975 BMW 315 | 2008 Daihatsu Sirion | |
| Make | BMW | Daihatsu |
| Model | 315 | Sirion |
| Year Released | 1975 | 2008 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1574 cc | 1298 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 90 HP |
| Engine RPM | 5800 RPM | 6000 RPM |
| Torque | 110 Nm | 120 Nm |
| Torque RPM | 3200 RPM | 4400 RPM |
| Engine Bore Size | 84 mm | 72 mm |
| Engine Stroke Size | 71 mm | 79.7 mm |
| Engine Compression Ratio | 9.5:1 | 10.0:1 |
| Top Speed | 154 km/hour | 165 km/hour |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1010 kg | 980 kg |
| Vehicle Length | 4360 mm | 3610 mm |
| Vehicle Width | 1620 mm | 1670 mm |
| Vehicle Height | 1390 mm | 1560 mm |
| Wheelbase Size | 2510 mm | 2440 mm |
