2006 BMW 630 vs. 1981 Mazda 121
To start off, 2006 BMW 630 is newer by 25 year(s). Which means there will be less support and parts availability for 1981 Mazda 121. In addition, the cost of maintenance, including insurance, on 1981 Mazda 121 would be higher. At 2,996 cc (6 cylinders), 2006 BMW 630 is equipped with a bigger engine. In terms of performance, 2006 BMW 630 (254 HP @ 6600 RPM) has 168 more horse power than 1981 Mazda 121. (86 HP @ 4800 RPM). In normal driving conditions, 2006 BMW 630 should accelerate faster than 1981 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 630 weights approximately 630 kg more than 1981 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2006 BMW 630 (300 Nm @ 2500 RPM) has 139 more torque (in Nm) than 1981 Mazda 121. (161 Nm @ 3000 RPM). This means 2006 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 1981 Mazda 121.
Compare all specifications:
| 2006 BMW 630 | 1981 Mazda 121 | |
| Make | BMW | Mazda |
| Model | 630 | 121 |
| Year Released | 2006 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 1970 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 254 HP | 86 HP |
| Engine RPM | 6600 RPM | 4800 RPM |
| Torque | 300 Nm | 161 Nm |
| Torque RPM | 2500 RPM | 3000 RPM |
| Engine Bore Size | 85 mm | 80 mm |
| Engine Stroke Size | 88 mm | 98 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 4 seats |
| Vehicle Weight | 1760 kg | 1130 kg |
| Vehicle Length | 4830 mm | 4510 mm |
| Vehicle Width | 1860 mm | 1690 mm |
| Vehicle Height | 1380 mm | 1350 mm |
| Wheelbase Size | 2790 mm | 2520 mm |
