1999 Buick Riviera vs. 2007 Lexus RX
To start off, 2007 Lexus RX is newer by 8 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, 2007 Lexus RX (272 HP @ 6200 RPM) has 67 more horse power than 1999 Buick Riviera. (205 HP @ 5200 RPM) In normal driving conditions, 2007 Lexus RX should accelerate faster than 1999 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 2007 Lexus RX weights approximately 135 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 2007 Lexus RX 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, 2007 Lexus RX 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, 2007 Lexus RX (342 Nm @ 4700 RPM) has 30 more torque (in Nm) than 1999 Buick Riviera. (312 Nm @ 4000 RPM). This means 2007 Lexus RX will have an easier job in driving up hills or pulling heavy equipment than 1999 Buick Riviera.
Compare all specifications:
| 1999 Buick Riviera | 2007 Lexus RX | |
| Make | Buick | Lexus |
| Model | Riviera | RX |
| Year Released | 1999 | 2007 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 3455 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 205 HP | 272 HP |
| Engine RPM | 5200 RPM | 6200 RPM |
| Torque | 312 Nm | 342 Nm |
| Torque RPM | 4000 RPM | 4700 RPM |
| Engine Bore Size | 96.5 mm | 94 mm |
| Engine Stroke Size | 86.4 mm | 83 mm |
| Engine Compression Ratio | 9.4:1 | 10.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1700 kg | 1835 kg |
| Vehicle Length | 5270 mm | 4750 mm |
| Vehicle Width | 1910 mm | 1850 mm |
| Vehicle Height | 1400 mm | 1680 mm |
