1991 BMW 320 vs. 2006 BMW X5
To start off, 2006 BMW X5 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 BMW 320. In addition, the cost of maintenance, including insurance, on 1991 BMW 320 would be higher. At 2,981 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (225 HP @ 5900 RPM) has 76 more horse power than 1991 BMW 320. (149 HP @ 5900 RPM) In normal driving conditions, 2006 BMW X5 should accelerate faster than 1991 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 565 kg more than 1991 BMW 320. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW 320. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 BMW X5 (290 Nm @ 3500 RPM) has 100 more torque (in Nm) than 1991 BMW 320. (190 Nm @ 4200 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 320.
Compare all specifications:
| 1991 BMW 320 | 2006 BMW X5 | |
| Make | BMW | BMW |
| Model | 320 | X5 |
| Year Released | 1991 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 2981 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 149 HP | 225 HP |
| Engine RPM | 5900 RPM | 5900 RPM |
| Torque | 190 Nm | 290 Nm |
| Torque RPM | 4200 RPM | 3500 RPM |
| Engine Bore Size | 80 mm | 84 mm |
| Engine Stroke Size | 66 mm | 89.6 mm |
| Engine Compression Ratio | 11.0:1 | 10.2:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1270 kg | 1835 kg |
| Vehicle Length | 4450 mm | 4670 mm |
| Vehicle Width | 1710 mm | 1880 mm |
| Vehicle Height | 1400 mm | 1770 mm |
| Wheelbase Size | 2710 mm | 2830 mm |
| Fuel Tank Capacity | 65 L | 92 L |
