2007 BMW X3 vs. 1981 BMW 628
To start off, 2007 BMW X3 is newer by 26 year(s). Which means there will be less support and parts availability for 1981 BMW 628. In addition, the cost of maintenance, including insurance, on 1981 BMW 628 would be higher. At 2,993 cc (6 cylinders), 2007 BMW X3 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (215 HP @ 4000 RPM) has 34 more horse power than 1981 BMW 628. (181 HP @ 6000 RPM). In normal driving conditions, 2007 BMW X3 should accelerate faster than 1981 BMW 628. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 295 kg more than 1981 BMW 628. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 1981 BMW 628. In wet, icy, snow, or gravel driving conditions, 2007 BMW X3 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, 2007 BMW X3 (480 Nm @ 1750 RPM) has 240 more torque (in Nm) than 1981 BMW 628. (240 Nm @ 4000 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 628. 2007 BMW X3 has automatic transmission and 1981 BMW 628 has manual transmission. 1981 BMW 628 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW X3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW X3 | 1981 BMW 628 | |
| Make | BMW | BMW |
| Model | X3 | 628 |
| Year Released | 2007 | 1981 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2788 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 215 HP | 181 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 480 Nm | 240 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Engine Compression Ratio | 17.0:1 | 9.3:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1765 kg | 1470 kg |
| Vehicle Length | 4570 mm | 4760 mm |
| Vehicle Width | 1680 mm | 1730 mm |
| Vehicle Height | 1860 mm | 1370 mm |
| Wheelbase Size | 2800 mm | 2640 mm |
| Fuel Tank Capacity | 67 L | 70 L |
