2009 Audi S4 vs. 1999 Buick Riviera
To start off, 2009 Audi S4 is newer by 10 year(s). Which means there will be less support and parts availability for 1999 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1999 Buick Riviera would be higher. 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 135 more horse power than 1999 Buick Riviera. (205 HP @ 5200 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 1999 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1999 Buick Riviera weights approximately 770 kg more than 2009 Audi S4.
Because 2009 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Buick Riviera. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi S4 (410 Nm @ 3500 RPM) has 98 more torque (in Nm) than 1999 Buick Riviera. (312 Nm @ 4000 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Buick Riviera. 1999 Buick Riviera 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. 1999 Buick Riviera will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi S4 | 1999 Buick Riviera | |
| Make | Audi | Buick |
| Model | S4 | Riviera |
| Year Released | 2009 | 1999 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3791 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 340 HP | 205 HP |
| Engine RPM | 7000 RPM | 5200 RPM |
| Torque | 410 Nm | 312 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.6 mm | 96.5 mm |
| Engine Stroke Size | 92.8 mm | 86.4 mm |
| Engine Compression Ratio | 18.0:1 | 9.4:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 930 kg | 1700 kg |
| Vehicle Length | 4580 mm | 5270 mm |
| Vehicle Width | 1780 mm | 1910 mm |
| Vehicle Height | 1400 mm | 1400 mm |
