1991 Ford Sierra vs. 2011 Ford Mondeo
To start off, 2011 Ford Mondeo is newer by 20 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 1,998 cc (4 cylinders), 2011 Ford Mondeo is equipped with a bigger engine. In terms of performance, 2011 Ford Mondeo (113 HP @ 4000 RPM) has 38 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2011 Ford Mondeo should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2011 Ford Mondeo weights approximately 339 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, 2011 Ford Mondeo (280 Nm @ 1900 RPM) has 128 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2011 Ford Mondeo will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2011 Ford Mondeo | |
| Make | Ford | Ford |
| Model | Sierra | Mondeo |
| Year Released | 1991 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 1998 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 113 HP |
| Engine RPM | 4500 RPM | 4000 RPM |
| Torque | 152 Nm | 280 Nm |
| Torque RPM | 2200 RPM | 1900 RPM |
| Engine Bore Size | 82.5 mm | 86 mm |
| Engine Stroke Size | 82 mm | 86 mm |
| Engine Compression Ratio | 21.5:1 | 18.0:1 |
| Fuel Type | Diesel | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1145 kg | 1484 kg |
| Vehicle Length | 4430 mm | 4740 mm |
| Vehicle Width | 1700 mm | 1820 mm |
| Vehicle Height | 1370 mm | 1420 mm |
| Wheelbase Size | 2620 mm | 2760 mm |
| Fuel Tank Capacity | 60 L | 59 L |
