1999 Buick Riviera vs. 2005 Porsche 911
To start off, 2005 Porsche 911 is newer by 6 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 3,791 cc (6 cylinders), 1999 Buick Riviera is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (315 HP @ 6800 RPM) has 110 more horse power than 1999 Buick Riviera. (205 HP @ 5200 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 1999 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1999 Buick Riviera weights approximately 135 kg more than 2005 Porsche 911.
Because 2005 Porsche 911 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, 2005 Porsche 911 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, 2005 Porsche 911 (370 Nm @ 4250 RPM) has 58 more torque (in Nm) than 1999 Buick Riviera. (312 Nm @ 4000 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1999 Buick Riviera.
Compare all specifications:
| 1999 Buick Riviera | 2005 Porsche 911 | |
| Make | Buick | Porsche |
| Model | Riviera | 911 |
| Year Released | 1999 | 2005 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 3791 cc | 3596 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 205 HP | 315 HP |
| Engine RPM | 5200 RPM | 6800 RPM |
| Torque | 312 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 4250 RPM |
| Engine Bore Size | 96.5 mm | 96 mm |
| Engine Stroke Size | 86.4 mm | 82.8 mm |
| Engine Compression Ratio | 9.4:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1700 kg | 1565 kg |
| Vehicle Length | 5270 mm | 4440 mm |
| Vehicle Width | 1910 mm | 1840 mm |
| Vehicle Height | 1400 mm | 1300 mm |
