2009 Audi S4 vs. 2009 Audi A5
To start off, both 2009 Audi S4 and 2009 Audi A5 were released in the same year (2009). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 79 more horse power than 2009 Audi A5. (261 HP @ 6500 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2009 Audi A5. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A5 weights approximately 606 kg more than 2009 Audi S4.
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, 2009 Audi S4 (410 Nm @ 3500 RPM) has 80 more torque (in Nm) than 2009 Audi A5. (330 Nm @ 3000 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A5. 2009 Audi A5 has automatic transmission and 2009 Audi S4 has manual transmission. 2009 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi S4 | 2009 Audi A5 | |
| Make | Audi | Audi |
| Model | S4 | A5 |
| Year Released | 2009 | 2009 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3197 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 261 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 410 Nm | 330 Nm |
| Torque RPM | 3500 RPM | 3000 RPM |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 930 kg | 1536 kg |
| Vehicle Length | 4580 mm | 4630 mm |
| Vehicle Width | 1780 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1380 mm |
| Wheelbase Size | 2660 mm | 2760 mm |
| Fuel Consumption Overall | 15.7 L/100km | 9.2 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
