1991 Mazda 121 vs. 2005 BMW Z4
To start off, 2005 BMW Z4 is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Mazda 121. In addition, the cost of maintenance, including insurance, on 1991 Mazda 121 would be higher. At 2,489 cc (6 cylinders), 2005 BMW Z4 is equipped with a bigger engine. In terms of performance, 2005 BMW Z4 (184 HP @ 6100 RPM) has 113 more horse power than 1991 Mazda 121. (71 HP @ 6000 RPM) In normal driving conditions, 2005 BMW Z4 should accelerate faster than 1991 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 495 kg more than 1991 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 1991 Mazda 121, being front wheel drive (FWD), will offer much better control with better grip. 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 BMW Z4 (237 Nm @ 3500 RPM) has 133 more torque (in Nm) than 1991 Mazda 121. (104 Nm @ 3700 RPM). This means 2005 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mazda 121. 2005 BMW Z4 has automatic transmission and 1991 Mazda 121 has manual transmission. 1991 Mazda 121 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Mazda 121 | 2005 BMW Z4 | |
| Make | Mazda | BMW |
| Model | 121 | Z4 |
| Year Released | 1991 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 1323 cc | 2489 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 71 HP | 184 HP |
| Engine RPM | 6000 RPM | 6100 RPM |
| Torque | 104 Nm | 237 Nm |
| Torque RPM | 3700 RPM | 3500 RPM |
| Engine Bore Size | 71 mm | 84 mm |
| Engine Stroke Size | 83.6 mm | 75 mm |
| Engine Compression Ratio | 9.4:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 155 km/hour | 235 km/hour |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Weight | 900 kg | 1395 kg |
| Vehicle Length | 3820 mm | 4100 mm |
| Vehicle Width | 1660 mm | 1790 mm |
| Vehicle Height | 1480 mm | 1310 mm |
| Wheelbase Size | 2400 mm | 2500 mm |
| Fuel Tank Capacity | 43 L | 55 L |
