1985 Alfa Romeo 90 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 21 year(s). Which means there will be less support and parts availability for 1985 Alfa Romeo 90. In addition, the cost of maintenance, including insurance, on 1985 Alfa Romeo 90 would be higher. Both 1985 Alfa Romeo 90 and 2006 BMW Z4 are equipped with a 2,492 cc engine. In terms of performance, 2006 BMW Z4 (189 HP @ 6000 RPM) has 80 more horse power than 1985 Alfa Romeo 90. (109 HP @ 4200 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1985 Alfa Romeo 90. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 85 kg more than 1985 Alfa Romeo 90. 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, 1985 Alfa Romeo 90 (246 Nm @ 2300 RPM) has 1 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 1985 Alfa Romeo 90 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 1985 Alfa Romeo 90 | 2006 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | 90 | Z4 |
| Year Released | 1985 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2492 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 109 HP | 189 HP |
| Engine RPM | 4200 RPM | 6000 RPM |
| Torque | 246 Nm | 245 Nm |
| Torque RPM | 2300 RPM | 3500 RPM |
| Engine Bore Size | 92 mm | 84 mm |
| Engine Stroke Size | 90 mm | 75 mm |
| Engine Compression Ratio | 22.0:1 | 11.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 178 km/hour | 235 km/hour |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1250 kg | 1335 kg |
| Vehicle Length | 4400 mm | 4100 mm |
| Vehicle Width | 1650 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1310 mm |
| Wheelbase Size | 2460 mm | 2500 mm |
| Fuel Consumption Overall | 5.4 L/100km | 9 L/100km |
| Fuel Tank Capacity | 49 L | 55 L |
