1971 BMW 3 vs. 2009 Mercedes-Benz SL
To start off, 2009 Mercedes-Benz SL is newer by 38 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 5,461 cc (8 cylinders), 2009 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz SL (382 HP @ 6000 RPM) has 182 more horse power than 1971 BMW 3. (200 HP @ 6000 RPM) In normal driving conditions, 2009 Mercedes-Benz SL should accelerate faster than 1971 BMW 3. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz SL weights approximately 1450 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, 2009 Mercedes-Benz SL (530 Nm @ 2800 RPM) has 259 more torque (in Nm) than 1971 BMW 3. (271 Nm @ 3700 RPM). This means 2009 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 1971 BMW 3. 2009 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. 2009 Mercedes-Benz SL will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1971 BMW 3 | 2009 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | 3 | SL |
| Year Released | 1971 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 5461 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 200 HP | 382 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 271 Nm | 530 Nm |
| Torque RPM | 3700 RPM | 2800 RPM |
| Engine Compression Ratio | 9.5:1 | 10.7:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1380 kg | 2830 kg |
| Vehicle Length | 4720 mm | 4540 mm |
| Vehicle Width | 1760 mm | 1820 mm |
| Vehicle Height | 1460 mm | 1300 mm |
| Wheelbase Size | 2700 mm | 2570 mm |
| Fuel Tank Capacity | 75 L | 80 L |
