2003 BMW 645 vs. 1990 BMW 316
To start off, 2003 BMW 645 is newer by 13 year(s). Which means there will be less support and parts availability for 1990 BMW 316. In addition, the cost of maintenance, including insurance, on 1990 BMW 316 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (310 HP @ 6000 RPM) has 210 more horse power than 1990 BMW 316. (100 HP @ 5500 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 1990 BMW 316. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 618 kg more than 1990 BMW 316. 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, 2003 BMW 645 (450 Nm @ 3600 RPM) has 309 more torque (in Nm) than 1990 BMW 316. (141 Nm @ 4250 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 316. 2003 BMW 645 has automatic transmission and 1990 BMW 316 has manual transmission. 1990 BMW 316 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 BMW 645 | 1990 BMW 316 | |
| Make | BMW | BMW |
| Model | 645 | 316 |
| Year Released | 2003 | 1990 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 1596 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 310 HP | 100 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 450 Nm | 141 Nm |
| Torque RPM | 3600 RPM | 4250 RPM |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1698 kg | 1080 kg |
| Vehicle Length | 4830 mm | 4330 mm |
| Vehicle Width | 1860 mm | 1650 mm |
| Vehicle Height | 1380 mm | 1390 mm |
| Wheelbase Size | 2790 mm | 2580 mm |
| Fuel Tank Capacity | 70 L | 70 L |
