2006 Audi S4 vs. 1998 BMW 845
To start off, 2006 Audi S4 is newer by 8 year(s). Which means there will be less support and parts availability for 1998 BMW 845. In addition, the cost of maintenance, including insurance, on 1998 BMW 845 would be higher. At 4,398 cc (8 cylinders), 1998 BMW 845 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (339 HP @ 7000 RPM) has 57 more horse power than 1998 BMW 845. (282 HP @ 5700 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 1998 BMW 845. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 130 kg more than 1998 BMW 845. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1998 BMW 845 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 1998 BMW 845. However, in wet, icy, snow, or gravel driving conditions, 2006 Audi S4, 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, 1998 BMW 845 (420 Nm @ 3900 RPM) has 10 more torque (in Nm) than 2006 Audi S4. (410 Nm @ 3500 RPM). This means 1998 BMW 845 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4.
Compare all specifications:
| 2006 Audi S4 | 1998 BMW 845 | |
| Make | Audi | BMW |
| Model | S4 | 845 |
| Year Released | 2006 | 1998 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 282 HP |
| Engine RPM | 7000 RPM | 5700 RPM |
| Torque | 410 Nm | 420 Nm |
| Torque RPM | 3500 RPM | 3900 RPM |
| Engine Bore Size | 84.6 mm | 92 mm |
| Engine Stroke Size | 92.8 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1880 kg | 1750 kg |
| Vehicle Length | 4590 mm | 4790 mm |
| Vehicle Width | 1730 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1350 mm |
| Wheelbase Size | 2650 mm | 2690 mm |
