1991 BMW M12 vs. 1989 Renault 21
To start off, 1991 BMW M12 is newer by 2 year(s). Which means there will be less support and parts availability for 1989 Renault 21. In addition, the cost of maintenance, including insurance, on 1989 Renault 21 would be higher. At 4,988 cc (12 cylinders), 1991 BMW M12 is equipped with a bigger engine. In terms of performance, 1991 BMW M12 (296 HP @ 5200 RPM) has 178 more horse power than 1989 Renault 21. (118 HP @ 5500 RPM). In normal driving conditions, 1991 BMW M12 should accelerate faster than 1989 Renault 21.
Because 1989 Renault 21 is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW M12. In wet, icy, snow, or gravel driving conditions, 1989 Renault 21 will offer significantly more control. 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 M12 (450 Nm @ 4100 RPM) has 281 more torque (in Nm) than 1989 Renault 21. (169 Nm @ 4500 RPM). This means 1991 BMW M12 will have an easier job in driving up hills or pulling heavy equipment than 1989 Renault 21.
Compare all specifications:
| 1991 BMW M12 | 1989 Renault 21 | |
| Make | BMW | Renault |
| Model | M12 | 21 |
| Year Released | 1991 | 1989 |
| Engine Position | Middle | Front |
| Engine Size | 4988 cc | 1995 cc |
| Engine Cylinders | 12 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 296 HP | 118 HP |
| Engine RPM | 5200 RPM | 5500 RPM |
| Torque | 450 Nm | 169 Nm |
| Torque RPM | 4100 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 88 mm |
| Engine Stroke Size | 75 mm | 82 mm |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Vehicle Length | 4370 mm | 4650 mm |
| Vehicle Width | 2000 mm | 1720 mm |
| Vehicle Height | 1110 mm | 1430 mm |
| Wheelbase Size | 2610 mm | 2820 mm |
