2003 Alfa Romeo 156 vs. 2007 Jaguar XJ
To start off, 2007 Jaguar XJ is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 4,196 cc (8 cylinders), 2007 Jaguar XJ is equipped with a bigger engine. In terms of performance, 2007 Jaguar XJ (300 HP @ 6000 RPM) has 111 more horse power than 2003 Alfa Romeo 156. (189 HP @ 6300 RPM) In normal driving conditions, 2007 Jaguar XJ should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2007 Jaguar XJ weights approximately 224 kg more than 2003 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Jaguar XJ is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2007 Jaguar XJ. However, in wet, icy, snow, or gravel driving conditions, 2003 Alfa Romeo 156, being front wheel drive (FWD), will offer much better control with better grip. 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, 2007 Jaguar XJ (420 Nm @ 4100 RPM) has 202 more torque (in Nm) than 2003 Alfa Romeo 156. (218 Nm @ 5000 RPM). This means 2007 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2007 Jaguar XJ | |
| Make | Alfa Romeo | Jaguar |
| Model | 156 | XJ |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4196 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 300 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 218 Nm | 420 Nm |
| Torque RPM | 5000 RPM | 4100 RPM |
| Engine Compression Ratio | 10.3:1 | 11.0:1 |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1435 kg | 1659 kg |
| Vehicle Length | 4440 mm | 5220 mm |
| Vehicle Width | 1750 mm | 1950 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2710 mm | 3170 mm |
| Fuel Consumption | 8.6 L/100km | 8.9 L/100km |
| Fuel Consumption City | 17.5 L/100km | 13.2 L/100km |
| Fuel Consumption Overall | 11.9 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 63 L | 85 L |
