1979 BMW 633 vs. 2005 BMW X5
To start off, 2005 BMW X5 is newer by 26 year(s). Which means there will be less support and parts availability for 1979 BMW 633. In addition, the cost of maintenance, including insurance, on 1979 BMW 633 would be higher. At 3,210 cc (6 cylinders), 1979 BMW 633 is equipped with a bigger engine. In terms of performance, 2005 BMW X5 (215 HP @ 4000 RPM) has 21 more horse power than 1979 BMW 633. (194 HP @ 5500 RPM) In normal driving conditions, 2005 BMW X5 should accelerate faster than 1979 BMW 633. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 700 kg more than 1979 BMW 633. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1979 BMW 633. In wet, icy, snow, or gravel driving conditions, 2005 BMW X5 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, 2005 BMW X5 (520 Nm @ 2000 RPM) has 235 more torque (in Nm) than 1979 BMW 633. (285 Nm @ 4300 RPM). This means 2005 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1979 BMW 633.
Compare all specifications:
| 1979 BMW 633 | 2005 BMW X5 | |
| Make | BMW | BMW |
| Model | 633 | X5 |
| Year Released | 1979 | 2005 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 3210 cc | 2926 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 194 HP | 215 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 285 Nm | 520 Nm |
| Torque RPM | 4300 RPM | 2000 RPM |
| Engine Bore Size | 89 mm | 84 mm |
| Engine Stroke Size | 86 mm | 90 mm |
| Engine Compression Ratio | 9.3:1 | 18.0:1 |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1470 kg | 2170 kg |
| Vehicle Length | 4760 mm | 4670 mm |
| Vehicle Width | 1760 mm | 1880 mm |
| Vehicle Height | 1390 mm | 1720 mm |
| Wheelbase Size | 2640 mm | 2830 mm |
| Fuel Tank Capacity | 70 L | 93 L |
