1981 BMW 725 vs. 2000 Infiniti QX4
To start off, 2000 Infiniti QX4 is newer by 19 year(s). Which means there will be less support and parts availability for 1981 BMW 725. In addition, the cost of maintenance, including insurance, on 1981 BMW 725 would be higher. At 3,496 cc (6 cylinders), 2000 Infiniti QX4 is equipped with a bigger engine. In terms of performance, 2000 Infiniti QX4 (238 HP @ 6000 RPM) has 90 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 2000 Infiniti QX4 should accelerate faster than 1981 BMW 725.
Because 2000 Infiniti QX4 is four wheel drive (4WD), it will have significant more traction and grip than 1981 BMW 725. In wet, icy, snow, or gravel driving conditions, 2000 Infiniti QX4 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, 2000 Infiniti QX4 (359 Nm @ 3200 RPM) has 144 more torque (in Nm) than 1981 BMW 725. (215 Nm @ 4000 RPM). This means 2000 Infiniti QX4 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 1981 BMW 725 | 2000 Infiniti QX4 | |
| Make | BMW | Infiniti |
| Model | 725 | QX4 |
| Year Released | 1981 | 2000 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2493 cc | 3496 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 238 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 215 Nm | 359 Nm |
| Torque RPM | 4000 RPM | 3200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4870 mm | 4660 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1440 mm | 1800 mm |
| Wheelbase Size | 2810 mm | 2710 mm |
