1987 Ford Sierra vs. 1979 Mazda 121
To start off, 1987 Ford Sierra is newer by 8 year(s). Which means there will be less support and parts availability for 1979 Mazda 121. In addition, the cost of maintenance, including insurance, on 1979 Mazda 121 would be higher. At 2,294 cc (4 cylinders), 1987 Ford Sierra is equipped with a bigger engine. In terms of performance, 1987 Ford Sierra (113 HP @ 5300 RPM) has 23 more horse power than 1979 Mazda 121. (90 HP @ 4800 RPM). In normal driving conditions, 1987 Ford Sierra should accelerate faster than 1979 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 1979 Mazda 121 weights approximately 44 kg more than 1987 Ford Sierra.
Let's talk about torque, 1987 Ford Sierra (180 Nm @ 3000 RPM) has 20 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 1987 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 1987 Ford Sierra | 1979 Mazda 121 | |
| Make | Ford | Mazda |
| Model | Sierra | 121 |
| Year Released | 1987 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 2294 cc | 1970 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 113 HP | 90 HP |
| Engine RPM | 5300 RPM | 4800 RPM |
| Torque | 180 Nm | 160 Nm |
| Torque RPM | 3000 RPM | 3000 RPM |
| Engine Bore Size | 96 mm | 80 mm |
| Engine Stroke Size | 79.5 mm | 98 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1090 kg | 1134 kg |
| Vehicle Length | 4400 mm | 4510 mm |
| Vehicle Width | 1680 mm | 1690 mm |
| Vehicle Height | 1370 mm | 1350 mm |
| Wheelbase Size | 2620 mm | 2520 mm |
