2007 BMW Z4 vs. 1998 Alfa Romeo 155
To start off, 2007 BMW Z4 is newer by 9 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 155. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 155 would be higher. At 2,996 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 1998 Alfa Romeo 155 (493 HP @ 11700 RPM) has 238 more horse power than 2007 BMW Z4. (255 HP @ 6600 RPM) In normal driving conditions, 1998 Alfa Romeo 155 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 358 kg more than 1998 Alfa Romeo 155.
Let's talk about torque, 1998 Alfa Romeo 155 (300 Nm @ 9500 RPM) has 2 more torque (in Nm) than 2007 BMW Z4. (298 Nm @ 2750 RPM). This means 1998 Alfa Romeo 155 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2007 BMW Z4 | 1998 Alfa Romeo 155 | |
| Make | BMW | Alfa Romeo |
| Model | Z4 | 155 |
| Year Released | 2007 | 1998 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2499 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 255 HP | 493 HP |
| Engine RPM | 6600 RPM | 11700 RPM |
| Torque | 298 Nm | 300 Nm |
| Torque RPM | 2750 RPM | 9500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1398 kg | 1040 kg |
| Vehicle Width | 1790 mm | 1750 mm |
