2009 Audi S8 vs. 1991 Buick Riviera
To start off, 2009 Audi S8 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1991 Buick Riviera would be higher. At 5,204 cc (10 cylinders), 2009 Audi S8 is equipped with a bigger engine. In terms of performance, 2009 Audi S8 (450 HP @ 7000 RPM) has 280 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM). In normal driving conditions, 2009 Audi S8 should accelerate faster than 1991 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Riviera weights approximately 345 kg more than 2009 Audi S8.
Because 2009 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 1991 Buick Riviera. In wet, icy, snow, or gravel driving conditions, 2009 Audi S8 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 S8 (540 Nm @ 3500 RPM) has 255 more torque (in Nm) than 1991 Buick Riviera. (285 Nm @ 3200 RPM). This means 2009 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Riviera.
Compare all specifications:
| 2009 Audi S8 | 1991 Buick Riviera | |
| Make | Audi | Buick |
| Model | S8 | Riviera |
| Year Released | 2009 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 3800 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 450 HP | 170 HP |
| Engine RPM | 7000 RPM | 4800 RPM |
| Torque | 540 Nm | 285 Nm |
| Torque RPM | 3500 RPM | 3200 RPM |
| Engine Compression Ratio | 12.5:1 | 8.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | AWD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1175 kg | 1520 kg |
| Vehicle Length | 5070 mm | 5040 mm |
| Vehicle Width | 1900 mm | 1830 mm |
| Vehicle Height | 1430 mm | 1350 mm |
| Wheelbase Size | 2950 mm | 2760 mm |
