2009 Ford Mustang vs. 1991 Ford Sierra
To start off, 2009 Ford Mustang 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 4,009 cc (6 cylinders), 2009 Ford Mustang is equipped with a bigger engine. In terms of performance, 2009 Ford Mustang (210 HP @ 5300 RPM) has 135 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 2009 Ford Mustang 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 Mustang.
Let's talk about torque, 2009 Ford Mustang (326 Nm @ 3500 RPM) has 174 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2009 Ford Mustang will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2009 Ford Mustang | 1991 Ford Sierra | |
| Make | Ford | Ford |
| Model | Mustang | Sierra |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4009 cc | 1751 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 210 HP | 75 HP |
| Engine RPM | 5300 RPM | 4500 RPM |
| Torque | 326 Nm | 152 Nm |
| Torque RPM | 3500 RPM | 2200 RPM |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 966 kg | 1145 kg |
| Vehicle Length | 4780 mm | 4430 mm |
| Vehicle Width | 1880 mm | 1700 mm |
| Vehicle Height | 1420 mm | 1370 mm |
| Wheelbase Size | 2730 mm | 2620 mm |
| Fuel Tank Capacity | 61 L | 60 L |
