1977 BMW 520 vs. 1991 Mercedes-Benz 600
To start off, 1991 Mercedes-Benz 600 is newer by 14 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 5,987 cc (12 cylinders), 1991 Mercedes-Benz 600 is equipped with a bigger engine. In terms of performance, 1991 Mercedes-Benz 600 (408 HP @ 5200 RPM) has 274 more horse power than 1977 BMW 520. (134 HP @ 4000 RPM) In normal driving conditions, 1991 Mercedes-Benz 600 should accelerate faster than 1977 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 1991 Mercedes-Benz 600 weights approximately 665 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.
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, 1991 Mercedes-Benz 600 (580 Nm @ 3800 RPM) has 300 more torque (in Nm) than 1977 BMW 520. (280 Nm @ 1750 RPM). This means 1991 Mercedes-Benz 600 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 520. 1991 Mercedes-Benz 600 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. 1991 Mercedes-Benz 600 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1977 BMW 520 | 1991 Mercedes-Benz 600 | |
| Make | BMW | Mercedes-Benz |
| Model | 520 | 600 |
| Year Released | 1977 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1951 cc | 5987 cc |
| Engine Cylinders | 4 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Horse Power | 134 HP | 408 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 280 Nm | 580 Nm |
| Torque RPM | 1750 RPM | 3800 RPM |
| Engine Bore Size | 84 mm | 89.1 mm |
| Engine Stroke Size | 88 mm | 80.2 mm |
| Engine Compression Ratio | 19.0:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1565 kg | 2230 kg |
| Vehicle Length | 4780 mm | 5220 mm |
| Vehicle Width | 1810 mm | 1890 mm |
| Vehicle Height | 1440 mm | 1500 mm |
| Wheelbase Size | 2840 mm | 3150 mm |
| Fuel Tank Capacity | 70 L | 100 L |
