1991 Ford Sierra vs. 2009 Mercury Milan
To start off, 2009 Mercury Milan is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 2,967 cc (6 cylinders), 2009 Mercury Milan is equipped with a bigger engine. In terms of performance, 2009 Mercury Milan (221 HP @ 6250 RPM) has 146 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2009 Mercury Milan should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercury Milan weights approximately 780 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, 2009 Mercury Milan (278 Nm @ 4800 RPM) has 126 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2009 Mercury Milan will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2009 Mercury Milan | |
| Make | Ford | Mercury |
| Model | Sierra | Milan |
| Year Released | 1991 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 2967 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 75 HP | 221 HP |
| Engine RPM | 4500 RPM | 6250 RPM |
| Torque | 152 Nm | 278 Nm |
| Torque RPM | 2200 RPM | 4800 RPM |
| Engine Compression Ratio | 21.5:1 | 9.7:1 |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1145 kg | 1925 kg |
| Vehicle Length | 4430 mm | 4870 mm |
| Vehicle Width | 1700 mm | 1840 mm |
| Vehicle Height | 1370 mm | 1460 mm |
| Wheelbase Size | 2620 mm | 2730 mm |
| Fuel Tank Capacity | 60 L | 66 L |
