1975 BMW 315 vs. 1985 BMW 628
To start off, 1985 BMW 628 is newer by 10 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 2,788 cc (6 cylinders), 1985 BMW 628 is equipped with a bigger engine. In terms of performance, 1985 BMW 628 (181 HP @ 6000 RPM) has 106 more horse power than 1975 BMW 315. (75 HP @ 5800 RPM) In normal driving conditions, 1985 BMW 628 should accelerate faster than 1975 BMW 315. With that said, vehicle weight also plays an important factor in acceleration. 1985 BMW 628 weights approximately 460 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.
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, 1985 BMW 628 (240 Nm @ 4000 RPM) has 130 more torque (in Nm) than 1975 BMW 315. (110 Nm @ 3200 RPM). This means 1985 BMW 628 will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 315.
Compare all specifications:
| 1975 BMW 315 | 1985 BMW 628 | |
| Make | BMW | BMW |
| Model | 315 | 628 |
| Year Released | 1975 | 1985 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1574 cc | 2788 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 181 HP |
| Engine RPM | 5800 RPM | 6000 RPM |
| Torque | 110 Nm | 240 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 86 mm |
| Engine Stroke Size | 71 mm | 80 mm |
| Engine Compression Ratio | 9.5:1 | 9.3:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1010 kg | 1470 kg |
| Vehicle Length | 4360 mm | 4760 mm |
| Vehicle Width | 1620 mm | 1730 mm |
| Vehicle Height | 1390 mm | 1370 mm |
| Wheelbase Size | 2510 mm | 2640 mm |
