2005 BMW Z4 vs. 1971 Mazda Cosmo
To start off, 2005 BMW Z4 is newer by 34 year(s). Which means there will be less support and parts availability for 1971 Mazda Cosmo. In addition, the cost of maintenance, including insurance, on 1971 Mazda Cosmo 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 91 more horse power than 1971 Mazda Cosmo. (93 HP @ 7000 RPM). In normal driving conditions, 2005 BMW Z4 should accelerate faster than 1971 Mazda Cosmo. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 455 kg more than 1971 Mazda Cosmo. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 BMW Z4 (237 Nm @ 3500 RPM) has 104 more torque (in Nm) than 1971 Mazda Cosmo. (133 Nm @ 3500 RPM). This means 2005 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1971 Mazda Cosmo.
Compare all specifications:
| 2005 BMW Z4 | 1971 Mazda Cosmo | |
| Make | BMW | Mazda |
| Model | Z4 | Cosmo |
| Year Released | 2005 | 1971 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2489 cc | 1964 cc |
| Horse Power | 184 HP | 93 HP |
| Engine RPM | 6100 RPM | 7000 RPM |
| Torque | 237 Nm | 133 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1395 kg | 940 kg |
| Vehicle Length | 4100 mm | 4150 mm |
| Vehicle Width | 1790 mm | 1600 mm |
| Vehicle Height | 1310 mm | 1170 mm |
| Wheelbase Size | 2500 mm | 2210 mm |
