1991 Alfa Romeo Proteo vs. 2007 Audi S6
To start off, 2007 Audi S6 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Alfa Romeo Proteo. In addition, the cost of maintenance, including insurance, on 1991 Alfa Romeo Proteo would be higher. At 5,204 cc (10 cylinders), 2007 Audi S6 is equipped with a bigger engine. In terms of performance, 2007 Audi S6 (435 HP @ 6800 RPM) has 179 more horse power than 1991 Alfa Romeo Proteo. (256 HP @ 7200 RPM) In normal driving conditions, 2007 Audi S6 should accelerate faster than 1991 Alfa Romeo Proteo. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S6 weights approximately 290 kg more than 1991 Alfa Romeo Proteo. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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. 2007 Audi S6 has automatic transmission and 1991 Alfa Romeo Proteo has manual transmission. 1991 Alfa Romeo Proteo will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Audi S6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Alfa Romeo Proteo | 2007 Audi S6 | |
| Make | Alfa Romeo | Audi |
| Model | Proteo | S6 |
| Year Released | 1991 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 5204 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 256 HP | 435 HP |
| Engine RPM | 7200 RPM | 6800 RPM |
| Engine Bore Size | 93.1 mm | 84.5 mm |
| Engine Stroke Size | 72.6 mm | 92.8 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1470 kg | 1760 kg |
| Vehicle Length | 4150 mm | 4920 mm |
