1981 Bitter SC vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 32 year(s). Which means there will be less support and parts availability for 1981 Bitter SC. In addition, the cost of maintenance, including insurance, on 1981 Bitter SC would be higher. At 4,395 cc (8 cylinders), 2013 BMW 6 series is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 257 more horse power than 1981 Bitter SC. (180 HP @ 5800 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 1981 Bitter SC. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 739 kg more than 1981 Bitter SC. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 BMW 6 series is all wheel drive (AWD), it will have significant more traction and grip than 1981 Bitter SC. In wet, icy, snow, or gravel driving conditions, 2013 BMW 6 series will offer significantly more control. 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, 2013 BMW 6 series (649 Nm @ 4500 RPM) has 401 more torque (in Nm) than 1981 Bitter SC. (248 Nm @ 4200 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 1981 Bitter SC.
Compare all specifications:
| 1981 Bitter SC | 2013 BMW 6 series | |
| Make | Bitter | BMW |
| Model | SC | 6 series |
| Year Released | 1981 | 2013 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2969 cc | 4395 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 180 HP | 437 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 248 Nm | 649 Nm |
| Torque RPM | 4200 RPM | 4500 RPM |
| Engine Bore Size | 95.1 mm | 89 mm |
| Engine Stroke Size | 69.8 mm | 88 mm |
| Engine Compression Ratio | 9.4:1 | 10.0 :1 |
| Acceleration 0-100mph | 10.1 seconds | 4.5 seconds |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1350 kg | 2089 kg |
| Vehicle Length | 4920 mm | 5009 mm |
| Vehicle Width | 1830 mm | 2081 mm |
| Vehicle Height | 1360 mm | 1392 mm |
| Wheelbase Size | 2690 mm | 2968 mm |
| Fuel Tank Capacity | 75 L | 70 L |
