1991 BMW Z1 vs. 1979 Mazda 121
To start off, 1991 BMW Z1 is newer by 12 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 2,497 cc (6 cylinders), 1991 BMW Z1 is equipped with a bigger engine. In terms of performance, 1991 BMW Z1 (175 HP @ 5800 RPM) has 85 more horse power than 1979 Mazda 121. (90 HP @ 4800 RPM). In normal driving conditions, 1991 BMW Z1 should accelerate faster than 1979 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 1991 BMW Z1 weights approximately 116 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.
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, 1991 BMW Z1 (230 Nm @ 4000 RPM) has 70 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 1991 BMW Z1 will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 1991 BMW Z1 | 1979 Mazda 121 | |
| Make | BMW | Mazda |
| Model | Z1 | 121 |
| Year Released | 1991 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 1970 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 175 HP | 90 HP |
| Engine RPM | 5800 RPM | 4800 RPM |
| Torque | 230 Nm | 160 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 82 mm | 80 mm |
| Engine Stroke Size | 78.8 mm | 98 mm |
| Engine Compression Ratio | 11.0:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 4 seats |
| Vehicle Weight | 1250 kg | 1134 kg |
| Vehicle Length | 3960 mm | 4510 mm |
| Vehicle Width | 1810 mm | 1690 mm |
| Vehicle Height | 1280 mm | 1350 mm |
| Wheelbase Size | 2450 mm | 2520 mm |
