1977 BMW 728 vs. 1995 Caterham 21
To start off, 1995 Caterham 21 is newer by 18 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 1977 BMW 728 (170 HP @ 6000 RPM) has 32 more horse power than 1995 Caterham 21. (138 HP @ 7000 RPM). In normal driving conditions, 1977 BMW 728 should accelerate faster than 1995 Caterham 21. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 888 kg more than 1995 Caterham 21. 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, 1977 BMW 728 (235 Nm @ 3700 RPM) has 79 more torque (in Nm) than 1995 Caterham 21. (156 Nm @ 5000 RPM). This means 1977 BMW 728 will have an easier job in driving up hills or pulling heavy equipment than 1995 Caterham 21.
Compare all specifications:
| 1977 BMW 728 | 1995 Caterham 21 | |
| Make | BMW | Caterham |
| Model | 728 | 21 |
| Year Released | 1977 | 1995 |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 1588 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 138 HP |
| Engine RPM | 6000 RPM | 7000 RPM |
| Torque | 235 Nm | 156 Nm |
| Torque RPM | 3700 RPM | 5000 RPM |
| Engine Bore Size | 86 mm | 80 mm |
| Engine Stroke Size | 80 mm | 79 mm |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Top Speed | 193 km/hour | 211 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1536 kg | 648 kg |
| Vehicle Length | 4870 mm | 3810 mm |
| Vehicle Width | 1810 mm | 1590 mm |
| Vehicle Height | 1440 mm | 1070 mm |
| Wheelbase Size | 2800 mm | 2260 mm |
| Fuel Tank Capacity | 85 L | 54 L |
