1981 ZIL 4104 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 ZIL 4104. In addition, the cost of maintenance, including insurance, on 1981 ZIL 4104 would be higher. At 7,691 cc (8 cylinders), 1981 ZIL 4104 is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 127 more horse power than 1981 ZIL 4104. (310 HP @ 4600 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 1981 ZIL 4104. With that said, vehicle weight also plays an important factor in acceleration. 1981 ZIL 4104 weights approximately 1246 kg more than 2013 BMW 6 series.
Because 2013 BMW 6 series is all wheel drive (AWD), it will have significant more traction and grip than 1981 ZIL 4104. 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 41 more torque (in Nm) than 1981 ZIL 4104. (608 Nm @ 4000 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 1981 ZIL 4104.
Compare all specifications:
| 1981 ZIL 4104 | 2013 BMW 6 series | |
| Make | ZIL | BMW |
| Model | 4104 | 6 series |
| Year Released | 1981 | 2013 |
| Engine Position | Front | Front |
| Engine Size | 7691 cc | 4395 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 310 HP | 437 HP |
| Engine RPM | 4600 RPM | 5500 RPM |
| Torque | 608 Nm | 649 Nm |
| Torque RPM | 4000 RPM | 4500 RPM |
| Engine Compression Ratio | 9.3:1 | 10.0 :1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 7 seats | 4 seats |
| Vehicle Weight | 3335 kg | 2089 kg |
| Vehicle Length | 5750 mm | 5009 mm |
| Vehicle Width | 2090 mm | 2081 mm |
| Vehicle Height | 1510 mm | 1392 mm |
| Wheelbase Size | 3340 mm | 2968 mm |
