2007 BMW Z4 vs. 1993 Renault 21
To start off, 2007 BMW Z4 is newer by 14 year(s). Which means there will be less support and parts availability for 1993 Renault 21. In addition, the cost of maintenance, including insurance, on 1993 Renault 21 would be higher. At 2,497 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (215 HP @ 6500 RPM) has 140 more horse power than 1993 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 1993 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 342 kg more than 1993 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 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 2007 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 1993 Renault 21, 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, 2007 BMW Z4 (250 Nm @ 2750 RPM) has 121 more torque (in Nm) than 1993 Renault 21. (129 Nm @ 3250 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1993 Renault 21.
Compare all specifications:
| 2007 BMW Z4 | 1993 Renault 21 | |
| Make | BMW | Renault |
| Model | Z4 | 21 |
| Year Released | 2007 | 1993 |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 1721 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 215 HP | 75 HP |
| Engine RPM | 6500 RPM | 5000 RPM |
| Torque | 250 Nm | 129 Nm |
| Torque RPM | 2750 RPM | 3250 RPM |
| Engine Bore Size | 82 mm | 81 mm |
| Engine Stroke Size | 78.8 mm | 83.5 mm |
| Engine Compression Ratio | 11.0:1 | 9.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 1362 kg | 1020 kg |
| Vehicle Length | 4100 mm | 4650 mm |
| Vehicle Width | 1310 mm | 1720 mm |
| Vehicle Height | 1790 mm | 1430 mm |
| Wheelbase Size | 2500 mm | 2820 mm |
