2005 GMC Sierra vs. 1977 Mazda 121
To start off, 2005 GMC Sierra is newer by 28 year(s). Which means there will be less support and parts availability for 1977 Mazda 121. In addition, the cost of maintenance, including insurance, on 1977 Mazda 121 would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (300 HP) has 214 more horse power than 1977 Mazda 121. (86 HP). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1977 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1744 kg more than 1977 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1977 Mazda 121. In wet, icy, snow, or gravel driving conditions, 2005 GMC Sierra will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 GMC Sierra (488 Nm) has 328 more torque (in Nm) than 1977 Mazda 121. (160 Nm). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1977 Mazda 121.
Compare all specifications:
| 2005 GMC Sierra | 1977 Mazda 121 | |
| Make | GMC | Mazda |
| Model | Sierra | 121 |
| Year Released | 2005 | 1977 |
| 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 | 86 HP |
| Torque | 488 Nm | 160 Nm |
| Engine Bore Size | 102 mm | 80.1 mm |
| Engine Stroke Size | 92 mm | 98 mm |
| Engine Compression Ratio | 9.4:1 | 8.6:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 6 seats | 4 seats |
| Vehicle Weight | 2874 kg | 1130 kg |
| Vehicle Length | 6510 mm | 4510 mm |
| Vehicle Width | 2030 mm | 1690 mm |
| Vehicle Height | 1960 mm | 1350 mm |
| Wheelbase Size | 4250 mm | 2520 mm |
