1977 BMW 520 vs. 1971 Vauxhall Firenza
To start off, 1977 BMW 520 is newer by 6 year(s). Which means there will be less support and parts availability for 1971 Vauxhall Firenza. In addition, the cost of maintenance, including insurance, on 1971 Vauxhall Firenza would be higher. At 1,975 cc (4 cylinders), 1971 Vauxhall Firenza is equipped with a bigger engine. In terms of performance, 1977 BMW 520 (134 HP @ 4000 RPM) has 30 more horse power than 1971 Vauxhall Firenza. (104 HP @ 5600 RPM). In normal driving conditions, 1977 BMW 520 should accelerate faster than 1971 Vauxhall Firenza. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 520 weights approximately 575 kg more than 1971 Vauxhall Firenza. 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 520 (280 Nm @ 1750 RPM) has 121 more torque (in Nm) than 1971 Vauxhall Firenza. (159 Nm @ 3400 RPM). This means 1977 BMW 520 will have an easier job in driving up hills or pulling heavy equipment than 1971 Vauxhall Firenza.
Compare all specifications:
| 1977 BMW 520 | 1971 Vauxhall Firenza | |
| Make | BMW | Vauxhall |
| Model | 520 | Firenza |
| Year Released | 1977 | 1971 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1951 cc | 1975 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 134 HP | 104 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 280 Nm | 159 Nm |
| Torque RPM | 1750 RPM | 3400 RPM |
| Engine Bore Size | 84 mm | 95.3 mm |
| Engine Stroke Size | 88 mm | 69.2 mm |
| Engine Compression Ratio | 19.0:1 | 8.5:1 |
| Top Speed | 206 km/hour | 158 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1565 kg | 990 kg |
| Vehicle Length | 4780 mm | 4140 mm |
| Vehicle Width | 1810 mm | 1630 mm |
| Vehicle Height | 1440 mm | 1350 mm |
| Wheelbase Size | 2840 mm | 2470 mm |
| Fuel Tank Capacity | 70 L | 36 L |
