1987 Ford Sierra vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 25 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 2,993 cc (6 cylinders), 2012 BMW 640 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (311 HP @ 4400 RPM) has 199 more horse power than 1987 Ford Sierra. (112 HP @ 5300 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 640 weights approximately 655 kg more than 1987 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2012 BMW 640 (630 Nm @ 1500 RPM) has 450 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1987 Ford Sierra | 2012 BMW 640 | |
| Make | Ford | BMW |
| Model | Sierra | 640 |
| Year Released | 1987 | 2012 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2292 cc | 2993 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 112 HP | 311 HP |
| Engine RPM | 5300 RPM | 4400 RPM |
| Torque | 180 Nm | 630 Nm |
| Torque RPM | 3000 RPM | 1500 RPM |
| Engine Bore Size | 96 mm | 90 mm |
| Engine Stroke Size | 79.5 mm | 84 mm |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1135 kg | 1790 kg |
| Vehicle Length | 4500 mm | 4894 mm |
| Vehicle Width | 1680 mm | 1894 mm |
| Vehicle Height | 1400 mm | 1369 mm |
| Wheelbase Size | 2620 mm | 2855 mm |
