2003 BMW 645 vs. 1976 BMW 633
To start off, 2003 BMW 645 is newer by 27 year(s). Which means there will be less support and parts availability for 1976 BMW 633. In addition, the cost of maintenance, including insurance, on 1976 BMW 633 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) has 116 more horse power than 1976 BMW 633. (194 HP). In normal driving conditions, 2003 BMW 645 should accelerate faster than 1976 BMW 633. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 228 kg more than 1976 BMW 633. 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. 2003 BMW 645 has automatic transmission and 1976 BMW 633 has manual transmission. 1976 BMW 633 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 | 1976 BMW 633 | |
| Make | BMW | BMW |
| Model | 645 | 633 |
| Year Released | 2003 | 1976 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 3210 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 310 HP | 194 HP |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1698 kg | 1470 kg |
| Vehicle Length | 4830 mm | 4760 mm |
| Vehicle Width | 1860 mm | 1730 mm |
| Vehicle Height | 1380 mm | 1370 mm |
| Wheelbase Size | 2790 mm | 2640 mm |
