1991 BMW 325 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 325. In addition, the cost of maintenance, including insurance, on 1991 BMW 325 would be higher. At 2,926 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (182 HP @ 2000 RPM) has 69 more horse power than 1991 BMW 325. (113 HP @ 4800 RPM) In normal driving conditions, 2006 BMW X5 should accelerate faster than 1991 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 196 kg more than 1991 BMW 325. 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 325. 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 (410 Nm @ 2000 RPM) has 190 more torque (in Nm) than 1991 BMW 325. (220 Nm @ 1900 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW 325.
Compare all specifications:
| 1991 BMW 325 | 2006 BMW X5 | |
| Make | BMW | BMW |
| Model | 325 | X5 |
| Year Released | 1991 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2443 cc | 2926 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 113 HP | 182 HP |
| Engine RPM | 4800 RPM | 2000 RPM |
| Torque | 220 Nm | 410 Nm |
| Torque RPM | 1900 RPM | 2000 RPM |
| Engine Bore Size | 80 mm | 84 mm |
| Engine Stroke Size | 81 mm | 88 mm |
| Fuel Type | Diesel | Diesel |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1434 kg | 1630 kg |
| Vehicle Length | 4440 mm | 4670 mm |
| Vehicle Width | 1710 mm | 1880 mm |
| Vehicle Height | 1400 mm | 1720 mm |
| Wheelbase Size | 2710 mm | 2830 mm |
| Fuel Tank Capacity | 70 L | 93 L |
