2009 Infiniti QX56 vs. 1978 Mercedes-Benz 240
To start off, 2009 Infiniti QX56 is newer by 31 year(s). Which means there will be less support and parts availability for 1978 Mercedes-Benz 240. In addition, the cost of maintenance, including insurance, on 1978 Mercedes-Benz 240 would be higher. At 5,552 cc (8 cylinders), 2009 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2009 Infiniti QX56 (320 HP @ 5200 RPM) has 248 more horse power than 1978 Mercedes-Benz 240. (72 HP @ 4400 RPM). In normal driving conditions, 2009 Infiniti QX56 should accelerate faster than 1978 Mercedes-Benz 240. With that said, vehicle weight also plays an important factor in acceleration. 2009 Infiniti QX56 weights approximately 334 kg more than 1978 Mercedes-Benz 240. 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 Infiniti QX56 (533 Nm @ 3400 RPM) has 396 more torque (in Nm) than 1978 Mercedes-Benz 240. (137 Nm @ 2400 RPM). This means 2009 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 1978 Mercedes-Benz 240. 2009 Infiniti QX56 has automatic transmission and 1978 Mercedes-Benz 240 has manual transmission. 1978 Mercedes-Benz 240 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Infiniti QX56 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Infiniti QX56 | 1978 Mercedes-Benz 240 | |
| Make | Infiniti | Mercedes-Benz |
| Model | QX56 | 240 |
| Year Released | 2009 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 5552 cc | 2399 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 320 HP | 72 HP |
| Engine RPM | 5200 RPM | 4400 RPM |
| Torque | 533 Nm | 137 Nm |
| Torque RPM | 3400 RPM | 2400 RPM |
| Engine Compression Ratio | 10.3:1 | 21.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1719 kg | 1385 kg |
| Vehicle Length | 5260 mm | 4730 mm |
| Vehicle Width | 2010 mm | 1790 mm |
| Vehicle Height | 1980 mm | 1450 mm |
| Wheelbase Size | 3140 mm | 2800 mm |
| Fuel Tank Capacity | 106 L | 65 L |
