2009 Ford Focus vs. 1991 Ford Sierra
To start off, 2009 Ford Focus 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 1,999 cc (4 cylinders), 2009 Ford Focus is equipped with a bigger engine. In terms of performance, 2009 Ford Focus (140 HP @ 6000 RPM) has 65 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 2009 Ford Focus should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Sierra weights approximately 179 kg more than 2009 Ford Focus.
Let's talk about torque, 2009 Ford Focus (184 Nm @ 4250 RPM) has 32 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2009 Ford Focus will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2009 Ford Focus | 1991 Ford Sierra | |
| Make | Ford | Ford |
| Model | Focus | Sierra |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1999 cc | 1751 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 140 HP | 75 HP |
| Engine RPM | 6000 RPM | 4500 RPM |
| Torque | 184 Nm | 152 Nm |
| Torque RPM | 4250 RPM | 2200 RPM |
| Engine Compression Ratio | 10.3:1 | 21.5:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 966 kg | 1145 kg |
| Vehicle Length | 4450 mm | 4430 mm |
| Vehicle Width | 1730 mm | 1700 mm |
| Vehicle Height | 1490 mm | 1370 mm |
| Wheelbase Size | 2620 mm | 2620 mm |
| Fuel Tank Capacity | 51 L | 60 L |
