1999 Buick Riviera vs. 2011 Mercedes-Benz CLS
To start off, 2011 Mercedes-Benz CLS is newer by 12 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 4,700 cc (8 cylinders), 2011 Mercedes-Benz CLS is equipped with a bigger engine. In terms of performance, 2011 Mercedes-Benz CLS (402 HP @ 5000 RPM) has 197 more horse power than 1999 Buick Riviera. (205 HP @ 5200 RPM) In normal driving conditions, 2011 Mercedes-Benz CLS should accelerate faster than 1999 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 2011 Mercedes-Benz CLS weights approximately 236 kg more than 1999 Buick Riviera. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 Mercedes-Benz CLS is all wheel drive (AWD), it will have significant more traction and grip than 1999 Buick Riviera. In wet, icy, snow, or gravel driving conditions, 2011 Mercedes-Benz CLS 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, 2011 Mercedes-Benz CLS (600 Nm @ 1800 RPM) has 288 more torque (in Nm) than 1999 Buick Riviera. (312 Nm @ 4000 RPM). This means 2011 Mercedes-Benz CLS will have an easier job in driving up hills or pulling heavy equipment than 1999 Buick Riviera.
Compare all specifications:
| 1999 Buick Riviera | 2011 Mercedes-Benz CLS | |
| Make | Buick | Mercedes-Benz |
| Model | Riviera | CLS |
| Year Released | 1999 | 2011 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 4700 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 205 HP | 402 HP |
| Engine RPM | 5200 RPM | 5000 RPM |
| Torque | 312 Nm | 600 Nm |
| Torque RPM | 4000 RPM | 1800 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | AWD |
| Transmission Type | Automatic | 7-speed shiftable automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1700 kg | 1936 kg |
| Vehicle Length | 5270 mm | 4940 mm |
| Vehicle Width | 1910 mm | 1882 mm |
| Vehicle Height | 1400 mm | 1417 mm |
