2005 Jaguar XJ vs. 1978 Mazda RX-7
To start off, 2005 Jaguar XJ is newer by 27 year(s). Which means there will be less support and parts availability for 1978 Mazda RX-7. In addition, the cost of maintenance, including insurance, on 1978 Mazda RX-7 would be higher. At 2,720 cc (6 cylinders), 2005 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2005 Jaguar XJ (204 HP @ 4000 RPM) has 99 more horse power than 1978 Mazda RX-7. (105 HP @ 6000 RPM). In normal driving conditions, 2005 Jaguar XJ should accelerate faster than 1978 Mazda RX-7. With that said, vehicle weight also plays an important factor in acceleration. 2005 Jaguar XJ weights approximately 599 kg more than 1978 Mazda RX-7. 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, 2005 Jaguar XJ (435 Nm @ 1900 RPM) has 290 more torque (in Nm) than 1978 Mazda RX-7. (145 Nm @ 4000 RPM). This means 2005 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 1978 Mazda RX-7. 2005 Jaguar XJ has automatic transmission and 1978 Mazda RX-7 has manual transmission. 1978 Mazda RX-7 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Jaguar XJ will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Jaguar XJ | 1978 Mazda RX-7 | |
| Make | Jaguar | Mazda |
| Model | XJ | RX-7 |
| Year Released | 2005 | 1978 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2720 cc | 2292 cc |
| Engine Type | V | dual-disk rotary |
| Horse Power | 204 HP | 105 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 435 Nm | 145 Nm |
| Torque RPM | 1900 RPM | 4000 RPM |
| Engine Compression Ratio | 17.3:1 | 9.4:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 220 km/hour | 185 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1659 kg | 1060 kg |
| Vehicle Length | 5100 mm | 4290 mm |
| Vehicle Width | 1870 mm | 1680 mm |
| Vehicle Height | 1450 mm | 1280 mm |
| Wheelbase Size | 3040 mm | 2430 mm |
| Fuel Tank Capacity | 85 L | 65 L |
