1978 BMW 628 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 26 year(s). Which means there will be less support and parts availability for 1978 BMW 628. In addition, the cost of maintenance, including insurance, on 1978 BMW 628 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 143 more horse power than 1978 BMW 628. (185 HP @ 5800 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 1978 BMW 628.
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, 2004 BMW 645 (450 Nm @ 3600 RPM) has 190 more torque (in Nm) than 1978 BMW 628. (260 Nm @ 4000 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1978 BMW 628.
Compare all specifications:
| 1978 BMW 628 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 628 | 645 |
| Year Released | 1978 | 2004 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2997 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 185 HP | 328 HP |
| Engine RPM | 5800 RPM | 6100 RPM |
| Torque | 260 Nm | 450 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4760 mm | 4830 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1380 mm |
| Wheelbase Size | 2640 mm | 2830 mm |
| Fuel Tank Capacity | 70 L | 70 L |
