2005 BMW 630 vs. 1991 Mercedes-Benz S
To start off, 2005 BMW 630 is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 1991 Mercedes-Benz S would be higher. At 2,999 cc (6 cylinders), 2005 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 90 more horse power than 1991 Mercedes-Benz S. (164 HP @ 4600 RPM). In normal driving conditions, 2005 BMW 630 should accelerate faster than 1991 Mercedes-Benz S. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 630 weights approximately 244 kg more than 1991 Mercedes-Benz S. 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, 2005 BMW 630 (300 Nm @ 2500 RPM) has 72 more torque (in Nm) than 1991 Mercedes-Benz S. (228 Nm @ 4600 RPM). This means 2005 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mercedes-Benz S.
Compare all specifications:
| 2005 BMW 630 | 1991 Mercedes-Benz S | |
| Make | BMW | Mercedes-Benz |
| Model | 630 | S |
| Year Released | 2005 | 1991 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 2598 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 254 HP | 164 HP |
| Engine RPM | 6600 RPM | 4600 RPM |
| Torque | 300 Nm | 228 Nm |
| Torque RPM | 2500 RPM | 4600 RPM |
| Engine Bore Size | 85 mm | 82.9 mm |
| Engine Stroke Size | 88 mm | 80.3 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1764 kg | 1520 kg |
| Vehicle Length | 4830 mm | 5030 mm |
| Vehicle Width | 1860 mm | 1830 mm |
| Vehicle Height | 1380 mm | 1440 mm |
| Wheelbase Size | 2670 mm | 2950 mm |
