1984 BMW 725 vs. 2008 BMW 135
To start off, 2008 BMW 135 is newer by 24 year(s). Which means there will be less support and parts availability for 1984 BMW 725. In addition, the cost of maintenance, including insurance, on 1984 BMW 725 would be higher. At 2,979 cc (6 cylinders), 2008 BMW 135 is equipped with a bigger engine. In terms of performance, 2008 BMW 135 (300 HP @ 5800 RPM) has 152 more horse power than 1984 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 2008 BMW 135 should accelerate faster than 1984 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, 2008 BMW 135 (407 Nm @ 1400 RPM) has 192 more torque (in Nm) than 1984 BMW 725. (215 Nm @ 4000 RPM). This means 2008 BMW 135 will have an easier job in driving up hills or pulling heavy equipment than 1984 BMW 725.
Compare all specifications:
| 1984 BMW 725 | 2008 BMW 135 | |
| Make | BMW | BMW |
| Model | 725 | 135 |
| Year Released | 1984 | 2008 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2495 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 300 HP |
| Engine RPM | 5500 RPM | 5800 RPM |
| Torque | 215 Nm | 407 Nm |
| Torque RPM | 4000 RPM | 1400 RPM |
| Engine Bore Size | 86 mm | 84 mm |
| Engine Stroke Size | 71.6 mm | 89.6 mm |
| Engine Compression Ratio | 9.6:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4870 mm | 4370 mm |
| Vehicle Width | 1810 mm | 1750 mm |
| Vehicle Height | 1440 mm | 1410 mm |
| Wheelbase Size | 2810 mm | 2670 mm |
