2007 Audi A8 vs. 2007 Audi S4
To start off, both 2007 Audi A8 and 2007 Audi S4 were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 5,997 cc, 2007 Audi A8 is equipped with a bigger engine. In terms of performance, 2007 Audi A8 (444 HP @ 6200 RPM) has 104 more horse power than 2007 Audi S4. (340 HP @ 7000 RPM). In normal driving conditions, 2007 Audi A8 should accelerate faster than 2007 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A8 weights approximately 465 kg more than 2007 Audi S4. 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. Let's talk about torque, 2007 Audi A8 (580 Nm @ 4000 RPM) has 170 more torque (in Nm) than 2007 Audi S4. (410 Nm @ 3500 RPM). This means 2007 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S4. 2007 Audi A8 has automatic transmission and 2007 Audi S4 has manual transmission. 2007 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi A8 | 2007 Audi S4 | |
| Make | Audi | Audi |
| Model | A8 | S4 |
| Year Released | 2007 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5997 cc | 4163 cc |
| Engine Type | W | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 444 HP | 340 HP |
| Engine RPM | 6200 RPM | 7000 RPM |
| Torque | 580 Nm | 410 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 84.5 mm |
| Engine Stroke Size | 90.2 mm | 93 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1995 kg | 1530 kg |
| Vehicle Length | 5070 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1790 mm |
| Vehicle Height | 1460 mm | 1420 mm |
| Wheelbase Size | 3080 mm | 2660 mm |
| Fuel Consumption Overall | 13.8 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 90 L | 63 L |
