2009 BMW 135 vs. 1979 BMW 725
To start off, 2009 BMW 135 is newer by 30 year(s). Which means there will be less support and parts availability for 1979 BMW 725. In addition, the cost of maintenance, including insurance, on 1979 BMW 725 would be higher. At 2,978 cc (6 cylinders), 2009 BMW 135 is equipped with a bigger engine. In terms of performance, 2009 BMW 135 (302 HP @ 5800 RPM) has 154 more horse power than 1979 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 2009 BMW 135 should accelerate faster than 1979 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, 2009 BMW 135 (400 Nm @ 1300 RPM) has 185 more torque (in Nm) than 1979 BMW 725. (215 Nm @ 4000 RPM). This means 2009 BMW 135 will have an easier job in driving up hills or pulling heavy equipment than 1979 BMW 725.
Compare all specifications:
| 2009 BMW 135 | 1979 BMW 725 | |
| Make | BMW | BMW |
| Model | 135 | 725 |
| Year Released | 2009 | 1979 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2978 cc | 2495 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 302 HP | 148 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 400 Nm | 215 Nm |
| Torque RPM | 1300 RPM | 4000 RPM |
| Engine Compression Ratio | 10.2:1 | 9.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4370 mm | 4870 mm |
| Vehicle Width | 1420 mm | 1810 mm |
| Vehicle Height | 1760 mm | 1440 mm |
| Wheelbase Size | 2670 mm | 2810 mm |
