1985 Mercedes-Benz 420 vs. 2007 BMW 645
To start off, 2007 BMW 645 is newer by 22 year(s). Which means there will be less support and parts availability for 1985 Mercedes-Benz 420. In addition, the cost of maintenance, including insurance, on 1985 Mercedes-Benz 420 would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 109 more horse power than 1985 Mercedes-Benz 420. (219 HP @ 5200 RPM) In normal driving conditions, 2007 BMW 645 should accelerate faster than 1985 Mercedes-Benz 420. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 215 kg more than 1985 Mercedes-Benz 420. 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 121 more torque (in Nm) than 1985 Mercedes-Benz 420. (329 Nm @ 3750 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1985 Mercedes-Benz 420.
Compare all specifications:
| 1985 Mercedes-Benz 420 | 2007 BMW 645 | |
| Make | Mercedes-Benz | BMW |
| Model | 420 | 645 |
| Year Released | 1985 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 4196 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 219 HP | 328 HP |
| Engine RPM | 5200 RPM | 6100 RPM |
| Torque | 329 Nm | 450 Nm |
| Torque RPM | 3750 RPM | 3600 RPM |
| Engine Bore Size | 92 mm | 92 mm |
| Engine Stroke Size | 78.9 mm | 82.7 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Top Speed | 214 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9 seconds | 6.1 seconds |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1600 kg | 1815 kg |
| Vehicle Length | 4400 mm | 4830 mm |
| Vehicle Width | 1800 mm | 1860 mm |
| Vehicle Height | 1300 mm | 1380 mm |
| Wheelbase Size | 2460 mm | 2790 mm |
