2006 Jaguar XK vs. 1978 Mercedes-Benz S
To start off, 2006 Jaguar XK is newer by 28 year(s). Which means there will be less support and parts availability for 1978 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 1978 Mercedes-Benz S would be higher. At 4,196 cc (8 cylinders), 2006 Jaguar XK is equipped with a bigger engine. In terms of performance, 2006 Jaguar XK (294 HP @ 6000 RPM) has 137 more horse power than 1978 Mercedes-Benz S. (157 HP @ 5500 RPM). In normal driving conditions, 2006 Jaguar XK should accelerate faster than 1978 Mercedes-Benz S. With that said, vehicle weight also plays an important factor in acceleration. 2006 Jaguar XK weights approximately 110 kg more than 1978 Mercedes-Benz S. 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, 2006 Jaguar XK (411 Nm @ 4100 RPM) has 188 more torque (in Nm) than 1978 Mercedes-Benz S. (223 Nm @ 4000 RPM). This means 2006 Jaguar XK will have an easier job in driving up hills or pulling heavy equipment than 1978 Mercedes-Benz S.
Compare all specifications:
| 2006 Jaguar XK | 1978 Mercedes-Benz S | |
| Make | Jaguar | Mercedes-Benz |
| Model | XK | S |
| Year Released | 2006 | 1978 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4196 cc | 2746 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 294 HP | 157 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 411 Nm | 223 Nm |
| Torque RPM | 4100 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 86 mm |
| Engine Stroke Size | 90.3 mm | 78.8 mm |
| Engine Compression Ratio | 11.0:1 | 8.7:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1720 kg | 1610 kg |
| Vehicle Length | 4800 mm | 4740 mm |
| Vehicle Width | 2080 mm | 1880 mm |
| Vehicle Height | 1330 mm | 1430 mm |
| Wheelbase Size | 2760 mm | 2870 mm |
| Fuel Tank Capacity | 70 L | 85 L |
