2003 Alpina B 10 vs. 1981 BMW 725
To start off, 2003 Alpina B 10 is newer by 22 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 4,618 cc (8 cylinders), 2003 Alpina B 10 is equipped with a bigger engine. In terms of performance, 2003 Alpina B 10 (342 HP @ 5700 RPM) has 194 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2003 Alpina B 10 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, 2003 Alpina B 10 (490 Nm @ 3700 RPM) has 275 more torque (in Nm) than 1981 BMW 725. (215 Nm @ 4000 RPM). This means 2003 Alpina B 10 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 2003 Alpina B 10 | 1981 BMW 725 | |
| Make | Alpina | BMW |
| Model | B 10 | 725 |
| Year Released | 2003 | 1981 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4618 cc | 2493 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 342 HP | 148 HP |
| Engine RPM | 5700 RPM | 5500 RPM |
| Torque | 490 Nm | 215 Nm |
| Torque RPM | 3700 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4810 mm | 4870 mm |
| Vehicle Width | 1810 mm | 1810 mm |
| Vehicle Height | 1450 mm | 1440 mm |
| Wheelbase Size | 2840 mm | 2810 mm |
