1981 BMW 725 vs. 1977 Opel Monza
To start off, 1981 BMW 725 is newer by 4 year(s). Which means there will be less support and parts availability for 1977 Opel Monza. In addition, the cost of maintenance, including insurance, on 1977 Opel Monza would be higher. At 2,969 cc (6 cylinders), 1977 Opel Monza is equipped with a bigger engine. In terms of performance, 1977 Opel Monza (180 HP @ 5800 RPM) has 32 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM) In normal driving conditions, 1977 Opel Monza 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, 1977 Opel Monza (248 Nm @ 4200 RPM) has 33 more torque (in Nm) than 1981 BMW 725. (215 Nm @ 4000 RPM). This means 1977 Opel Monza will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
| 1981 BMW 725 | 1977 Opel Monza | |
| Make | BMW | Opel |
| Model | 725 | Monza |
| Year Released | 1981 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 2493 cc | 2969 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 180 HP |
| Engine RPM | 5500 RPM | 5800 RPM |
| Torque | 215 Nm | 248 Nm |
| Torque RPM | 4000 RPM | 4200 RPM |
| Engine Bore Size | 86 mm | 95 mm |
| Engine Stroke Size | 71.6 mm | 69.8 mm |
| Engine Compression Ratio | 9.6:1 | 9.4:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4870 mm | 4730 mm |
| Vehicle Width | 1810 mm | 1730 mm |
| Vehicle Height | 1440 mm | 1350 mm |
| Wheelbase Size | 2810 mm | 2670 mm |
