1971 BMW 3 vs. 2005 Mercedes-Benz SL
To start off, 2005 Mercedes-Benz SL is newer by 34 year(s). Which means there will be less support and parts availability for 1971 BMW 3. In addition, the cost of maintenance, including insurance, on 1971 BMW 3 would be higher. At 5,513 cc (12 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (493 HP @ 4800 RPM) has 313 more horse power than 1971 BMW 3. (180 HP @ 6000 RPM) In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 1971 BMW 3. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 660 kg more than 1971 BMW 3. 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 Mercedes-Benz SL (800 Nm @ 1800 RPM) has 545 more torque (in Nm) than 1971 BMW 3. (255 Nm @ 3700 RPM). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 1971 BMW 3. 2005 Mercedes-Benz SL has automatic transmission and 1971 BMW 3 has manual transmission. 1971 BMW 3 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Mercedes-Benz SL will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1971 BMW 3 | 2005 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | 3 | SL |
| Year Released | 1971 | 2005 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 5513 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Horse Power | 180 HP | 493 HP |
| Engine RPM | 6000 RPM | 4800 RPM |
| Torque | 255 Nm | 800 Nm |
| Torque RPM | 3700 RPM | 1800 RPM |
| Engine Bore Size | 89 mm | 82 mm |
| Engine Stroke Size | 80 mm | 87 mm |
| Engine Compression Ratio | 9.0:1 | 9.0:1 |
| Top Speed | 211 km/hour | 250 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1380 kg | 2040 kg |
| Vehicle Length | 4740 mm | 4540 mm |
| Vehicle Width | 1700 mm | 1830 mm |
| Vehicle Height | 1370 mm | 1300 mm |
| Wheelbase Size | 2670 mm | 2570 mm |
