1999 Buick Riviera vs. 1977 Citroen GS
To start off, 1999 Buick Riviera is newer by 22 year(s). Which means there will be less support and parts availability for 1977 Citroen GS. In addition, the cost of maintenance, including insurance, on 1977 Citroen GS 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 150 more horse power than 1977 Citroen GS. (55 HP @ 6500 RPM). In normal driving conditions, 1999 Buick Riviera should accelerate faster than 1977 Citroen GS. With that said, vehicle weight also plays an important factor in acceleration. 1999 Buick Riviera weights approximately 810 kg more than 1977 Citroen GS. 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 240 more torque (in Nm) than 1977 Citroen GS. (72 Nm @ 3500 RPM). This means 1999 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 1977 Citroen GS.
Compare all specifications:
| 1999 Buick Riviera | 1977 Citroen GS | |
| Make | Buick | Citroen |
| Model | Riviera | GS |
| Year Released | 1999 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 1015 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 205 HP | 55 HP |
| Engine RPM | 5200 RPM | 6500 RPM |
| Torque | 312 Nm | 72 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 96.5 mm | 74 mm |
| Engine Stroke Size | 86.4 mm | 59 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1700 kg | 890 kg |
| Vehicle Length | 5270 mm | 4130 mm |
| Vehicle Width | 1910 mm | 1620 mm |
| Vehicle Height | 1400 mm | 1360 mm |
