1981 BMW 725 vs. 1985 Ford Sierra
To start off, 1985 Ford Sierra is newer by 4 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 2,790 cc (6 cylinders), 1985 Ford Sierra is equipped with a bigger engine. In terms of performance, both vehicles can yield 148 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar.
Let's talk about torque, 1985 Ford Sierra (220 Nm @ 3800 RPM) has 5 more torque (in Nm) than 1981 BMW 725. (215 Nm @ 4000 RPM). This means 1985 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 725.
Compare all specifications:
1981 BMW 725 | 1985 Ford Sierra | |
Make | BMW | Ford |
Model | 725 | Sierra |
Year Released | 1981 | 1985 |
Engine Position | Front | Front |
Engine Size | 2493 cc | 2790 cc |
Engine Cylinders | 6 cylinders | 6 cylinders |
Engine Type | in-line | in-line |
Horse Power | 148 HP | 148 HP |
Engine RPM | 5500 RPM | 5700 RPM |
Torque | 215 Nm | 220 Nm |
Torque RPM | 4000 RPM | 3800 RPM |
Engine Bore Size | 86 mm | 93 mm |
Engine Stroke Size | 71.6 mm | 68.5 mm |
Fuel Type | Gasoline | Gasoline |
Vehicle Length | 4870 mm | 4400 mm |
Vehicle Width | 1810 mm | 1680 mm |
Vehicle Height | 1440 mm | 1370 mm |
Wheelbase Size | 2810 mm | 2620 mm |