1991 Buick Riviera vs. 2009 Toyota Sienna
To start off, 2009 Toyota Sienna is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Buick Riviera. In addition, the cost of maintenance, including insurance, on 1991 Buick Riviera would be higher. At 3,800 cc (6 cylinders), 1991 Buick Riviera is equipped with a bigger engine. In terms of performance, 2009 Toyota Sienna (266 HP @ 6200 RPM) has 96 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM) In normal driving conditions, 2009 Toyota Sienna should accelerate faster than 1991 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 2009 Toyota Sienna weights approximately 415 kg more than 1991 Buick Riviera. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Toyota Sienna is four wheel drive (4WD), it will have significant more traction and grip than 1991 Buick Riviera. In wet, icy, snow, or gravel driving conditions, 2009 Toyota Sienna 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, 2009 Toyota Sienna (332 Nm @ 4700 RPM) has 47 more torque (in Nm) than 1991 Buick Riviera. (285 Nm @ 3200 RPM). This means 2009 Toyota Sienna will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Riviera.
Compare all specifications:
| 1991 Buick Riviera | 2009 Toyota Sienna | |
| Make | Buick | Toyota |
| Model | Riviera | Sienna |
| Year Released | 1991 | 2009 |
| Body Type | Coupe | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 3455 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 170 HP | 266 HP |
| Engine RPM | 4800 RPM | 6200 RPM |
| Torque | 285 Nm | 332 Nm |
| Torque RPM | 3200 RPM | 4700 RPM |
| Engine Compression Ratio | 8.5:1 | 9.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 7 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1520 kg | 1935 kg |
| Vehicle Length | 5040 mm | 5110 mm |
| Vehicle Width | 1830 mm | 1970 mm |
| Vehicle Height | 1350 mm | 1760 mm |
| Wheelbase Size | 2760 mm | 3040 mm |
