1978 Alfa Romeo Giulietta vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 28 year(s). Which means there will be less support and parts availability for 1978 Alfa Romeo Giulietta. In addition, the cost of maintenance, including insurance, on 1978 Alfa Romeo Giulietta would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 235 more horse power than 1978 Alfa Romeo Giulietta. (93 HP @ 6000 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 1978 Alfa Romeo Giulietta. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 766 kg more than 1978 Alfa Romeo Giulietta. 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 329 more torque (in Nm) than 1978 Alfa Romeo Giulietta. (121 Nm @ 4500 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1978 Alfa Romeo Giulietta.
Compare all specifications:
| 1978 Alfa Romeo Giulietta | 2006 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | Giulietta | 645 |
| Year Released | 1978 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1357 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 93 HP | 328 HP |
| Engine RPM | 6000 RPM | 6100 RPM |
| Torque | 121 Nm | 450 Nm |
| Torque RPM | 4500 RPM | 3600 RPM |
| Engine Bore Size | 80 mm | 92 mm |
| Engine Stroke Size | 67.5 mm | 83 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Top Speed | 165 km/hour | 250 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 | 1070 kg | 1836 kg |
| Vehicle Length | 4220 mm | 4830 mm |
| Vehicle Width | 1660 mm | 1860 mm |
| Vehicle Height | 1410 mm | 1380 mm |
| Wheelbase Size | 2520 mm | 2790 mm |
| Fuel Tank Capacity | 50 L | 70 L |
