2004 GMC Sierra vs. 1979 Mazda 121
To start off, 2004 GMC Sierra is newer by 25 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 5,965 cc (8 cylinders), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (300 HP) has 210 more horse power than 1979 Mazda 121. (90 HP). In normal driving conditions, 2004 GMC Sierra should accelerate faster than 1979 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 1148 kg more than 1979 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, 2004 GMC Sierra (488 Nm) has 328 more torque (in Nm) than 1979 Mazda 121. (160 Nm). This means 2004 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 2004 GMC Sierra | 1979 Mazda 121 | |
| Make | GMC | Mazda |
| Model | Sierra | 121 |
| Year Released | 2004 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 1970 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 300 HP | 90 HP |
| Torque | 488 Nm | 160 Nm |
| Engine Bore Size | 102.1 mm | 80 mm |
| Engine Stroke Size | 92 mm | 98 mm |
| Engine Compression Ratio | 9.4:1 | 8.6:1 |
| Number of Seats | 3 seats | 4 seats |
| Vehicle Weight | 2282 kg | 1134 kg |
| Vehicle Length | 5650 mm | 4510 mm |
| Vehicle Width | 2000 mm | 1690 mm |
| Vehicle Height | 1890 mm | 1350 mm |
| Wheelbase Size | 3380 mm | 2520 mm |
