1991 Ford Sierra vs. 1986 Mercedes-Benz 560
To start off, 1991 Ford Sierra is newer by 5 year(s). Which means there will be less support and parts availability for 1986 Mercedes-Benz 560. In addition, the cost of maintenance, including insurance, on 1986 Mercedes-Benz 560 would be higher. At 5,547 cc (8 cylinders), 1986 Mercedes-Benz 560 is equipped with a bigger engine. In terms of performance, 1986 Mercedes-Benz 560 (142 HP @ 4750 RPM) has 67 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 1986 Mercedes-Benz 560 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1986 Mercedes-Benz 560 weights approximately 474 kg more than 1991 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, 1986 Mercedes-Benz 560 (454 Nm @ 3250 RPM) has 302 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 1986 Mercedes-Benz 560 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 1986 Mercedes-Benz 560 | |
| Make | Ford | Mercedes-Benz |
| Model | Sierra | 560 |
| Year Released | 1991 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 5547 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 75 HP | 142 HP |
| Engine RPM | 4500 RPM | 4750 RPM |
| Torque | 152 Nm | 454 Nm |
| Torque RPM | 2200 RPM | 3250 RPM |
| Engine Bore Size | 82.5 mm | 96.5 mm |
| Engine Stroke Size | 82 mm | 94.8 mm |
| Engine Compression Ratio | 21.5:1 | 9.0:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1145 kg | 1619 kg |
| Vehicle Length | 4430 mm | 4590 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1370 mm | 1300 mm |
| Wheelbase Size | 2620 mm | 2460 mm |
