2007 Audi S4 vs. 1991 Saab 900
To start off, 2007 Audi S4 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Saab 900. In addition, the cost of maintenance, including insurance, on 1991 Saab 900 would be higher. At 4,163 cc (8 cylinders), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (339 HP @ 7000 RPM) has 201 more horse power than 1991 Saab 900. (138 HP @ 6000 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 1991 Saab 900. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi S4 weights approximately 455 kg more than 1991 Saab 900. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Saab 900. In wet, icy, snow, or gravel driving conditions, 2007 Audi S4 will offer significantly more control. 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 Audi S4 (410 Nm @ 3500 RPM) has 230 more torque (in Nm) than 1991 Saab 900. (180 Nm @ 2900 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Saab 900. 2007 Audi S4 has automatic transmission and 1991 Saab 900 has manual transmission. 1991 Saab 900 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Audi S4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi S4 | 1991 Saab 900 | |
| Make | Audi | Saab |
| Model | S4 | 900 |
| Year Released | 2007 | 1991 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1985 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 339 HP | 138 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 410 Nm | 180 Nm |
| Torque RPM | 3500 RPM | 2900 RPM |
| Engine Bore Size | 84.6 mm | 90 mm |
| Engine Stroke Size | 92.8 mm | 78 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1755 kg | 1300 kg |
| Vehicle Length | 4590 mm | 4640 mm |
| Vehicle Width | 1730 mm | 1720 mm |
| Vehicle Height | 1430 mm | 1440 mm |
| Wheelbase Size | 2650 mm | 2530 mm |
