1999 Buick Riviera vs. 1990 Pontiac Grand Am
To start off, 1999 Buick Riviera is newer by 9 year(s). Which means there will be less support and parts availability for 1990 Pontiac Grand Am. In addition, the cost of maintenance, including insurance, on 1990 Pontiac Grand Am would be higher. At 3,791 cc (6 cylinders), 1999 Buick Riviera is equipped with a bigger engine. In terms of performance, 1999 Buick Riviera (205 HP @ 5200 RPM) has 42 more horse power than 1990 Pontiac Grand Am. (163 HP @ 5600 RPM). In normal driving conditions, 1999 Buick Riviera should accelerate faster than 1990 Pontiac Grand Am. With that said, vehicle weight also plays an important factor in acceleration. 1999 Buick Riviera weights approximately 465 kg more than 1990 Pontiac Grand Am. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 1999 Buick Riviera (312 Nm @ 4000 RPM) has 75 more torque (in Nm) than 1990 Pontiac Grand Am. (237 Nm @ 4000 RPM). This means 1999 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 1990 Pontiac Grand Am.
Compare all specifications:
| 1999 Buick Riviera | 1990 Pontiac Grand Am | |
| Make | Buick | Pontiac |
| Model | Riviera | Grand Am |
| Year Released | 1999 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 1996 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 205 HP | 163 HP |
| Engine RPM | 5200 RPM | 5600 RPM |
| Torque | 312 Nm | 237 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 96.5 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1700 kg | 1235 kg |
| Vehicle Length | 5270 mm | 4520 mm |
| Vehicle Width | 1910 mm | 1710 mm |
| Vehicle Height | 1400 mm | 1340 mm |
