1977 BMW 520 vs. 2013 BMW X5
To start off, 2013 BMW X5 is newer by 36 year(s). Which means there will be less support and parts availability for 1977 BMW 520. In addition, the cost of maintenance, including insurance, on 1977 BMW 520 would be higher. At 4,400 cc (8 cylinders), 2013 BMW X5 is equipped with a bigger engine. In terms of performance, 2013 BMW X5 (395 HP @ 5500 RPM) has 261 more horse power than 1977 BMW 520. (134 HP @ 4000 RPM) In normal driving conditions, 2013 BMW X5 should accelerate faster than 1977 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW X5 weights approximately 875 kg more than 1977 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 BMW X5 is all wheel drive (AWD), it will have significant more traction and grip than 1977 BMW 520. In wet, icy, snow, or gravel driving conditions, 2013 BMW X5 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, 2013 BMW X5 (610 Nm @ 4500 RPM) has 330 more torque (in Nm) than 1977 BMW 520. (280 Nm @ 1750 RPM). This means 2013 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 520. 2013 BMW X5 has automatic transmission and 1977 BMW 520 has manual transmission. 1977 BMW 520 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2013 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1977 BMW 520 | 2013 BMW X5 | |
| Make | BMW | BMW |
| Model | 520 | X5 |
| Year Released | 1977 | 2013 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1951 cc | 4400 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 134 HP | 395 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 280 Nm | 610 Nm |
| Torque RPM | 1750 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 88 mm | 88 mm |
| Engine Compression Ratio | 19.0:1 | 10.0 :1 |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | 8-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1565 kg | 2440 kg |
| Vehicle Length | 4780 mm | 4857 mm |
| Vehicle Width | 1810 mm | 2197 mm |
| Vehicle Height | 1440 mm | 1776 mm |
| Wheelbase Size | 2840 mm | 2933 mm |
| Fuel Consumption | 4.7 L/100km | 9.9 L/100km |
| Fuel Consumption City | 7.8 L/100km | 15.3 L/100km |
| Fuel Tank Capacity | 70 L | 85 L |
