1991 Ford Sierra vs. 1992 Mazda 121
To start off, 1992 Mazda 121 is newer by 1 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 1,751 cc (4 cylinders), 1991 Ford Sierra is equipped with a bigger engine. In terms of performance, 1991 Ford Sierra (75 HP @ 4500 RPM) has 3 more horse power than 1992 Mazda 121. (72 HP @ 6000 RPM). In normal driving conditions, 1991 Ford Sierra should accelerate faster than 1992 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Sierra weights approximately 325 kg more than 1992 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1991 Ford Sierra (152 Nm @ 2200 RPM) has 47 more torque (in Nm) than 1992 Mazda 121. (105 Nm @ 3700 RPM). This means 1991 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1992 Mazda 121.
Compare all specifications:
| 1991 Ford Sierra | 1992 Mazda 121 | |
| Make | Ford | Mazda |
| Model | Sierra | 121 |
| Year Released | 1991 | 1992 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 1324 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 72 HP |
| Engine RPM | 4500 RPM | 6000 RPM |
| Torque | 152 Nm | 105 Nm |
| Torque RPM | 2200 RPM | 3700 RPM |
| Engine Bore Size | 82.5 mm | 71 mm |
| Engine Stroke Size | 82 mm | 83.6 mm |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1145 kg | 820 kg |
| Vehicle Length | 4430 mm | 3820 mm |
| Vehicle Width | 1700 mm | 1660 mm |
| Vehicle Height | 1370 mm | 1480 mm |
| Wheelbase Size | 2620 mm | 2460 mm |
| Fuel Tank Capacity | 60 L | 43 L |
