1981 BMW 725 vs. 2001 Lotec Sirius
To start off, 2001 Lotec Sirius is newer by 20 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 5,987 cc (12 cylinders), 2001 Lotec Sirius is equipped with a bigger engine. In terms of performance, 2001 Lotec Sirius (1,185 HP @ 6800 RPM) has 1037 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 2001 Lotec Sirius should accelerate faster than 1981 BMW 725.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2001 Lotec Sirius (1,346 Nm @ 3400 RPM) has 1131 more torque (in Nm) than 1981 BMW 725. (215 Nm @ 4000 RPM). This means 2001 Lotec Sirius will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 1981 BMW 725 | 2001 Lotec Sirius | |
| Make | BMW | Lotec |
| Model | 725 | Sirius |
| Year Released | 1981 | 2001 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 2493 cc | 5987 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 1185 HP |
| Engine RPM | 5500 RPM | 6800 RPM |
| Torque | 215 Nm | 1346 Nm |
| Torque RPM | 4000 RPM | 3400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4870 mm | 4130 mm |
| Vehicle Width | 1810 mm | 2090 mm |
| Vehicle Height | 1440 mm | 1130 mm |
