1998 Alfa Romeo 156 vs. 2003 Infiniti M
To start off, 2003 Infiniti M is newer by 5 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 156 would be higher. At 4,494 cc (8 cylinders), 2003 Infiniti M is equipped with a bigger engine. In terms of performance, 2003 Infiniti M (340 HP @ 6400 RPM) has 153 more horse power than 1998 Alfa Romeo 156. (187 HP @ 6300 RPM) In normal driving conditions, 2003 Infiniti M should accelerate faster than 1998 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti M weights approximately 397 kg more than 1998 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Infiniti M 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 2003 Infiniti M. However, in wet, icy, snow, or gravel driving conditions, 1998 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, 2003 Infiniti M (451 Nm @ 4000 RPM) has 229 more torque (in Nm) than 1998 Alfa Romeo 156. (222 Nm @ 5000 RPM). This means 2003 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 156.
Compare all specifications:
| 1998 Alfa Romeo 156 | 2003 Infiniti M | |
| Make | Alfa Romeo | Infiniti |
| Model | 156 | M |
| Year Released | 1998 | 2003 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 4494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 187 HP | 340 HP |
| Engine RPM | 6300 RPM | 6400 RPM |
| Torque | 222 Nm | 451 Nm |
| Torque RPM | 5000 RPM | 4000 RPM |
| Engine Bore Size | 88 mm | 93 mm |
| Engine Stroke Size | 68.3 mm | 82.7 mm |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1350 kg | 1747 kg |
| Vehicle Length | 4440 mm | 5020 mm |
| Vehicle Width | 1750 mm | 1780 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2810 mm |
| Fuel Tank Capacity | 63 L | 79 L |
