2006 Alfa Romeo 156 vs. 1991 Buick Riviera
To start off, 2006 Alfa Romeo 156 is newer by 15 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, 1991 Buick Riviera (170 HP @ 4800 RPM) has 22 more horse power than 2006 Alfa Romeo 156. (148 HP @ 6300 RPM) In normal driving conditions, 1991 Buick Riviera should accelerate faster than 2006 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 156 weights approximately 65 kg more than 1991 Buick Riviera.
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, 1991 Buick Riviera (285 Nm @ 3200 RPM) has 104 more torque (in Nm) than 2006 Alfa Romeo 156. (181 Nm @ 3800 RPM). This means 1991 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo 156. 1991 Buick Riviera has automatic transmission and 2006 Alfa Romeo 156 has manual transmission. 2006 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1991 Buick Riviera will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Alfa Romeo 156 | 1991 Buick Riviera | |
| Make | Alfa Romeo | Buick |
| Model | 156 | Riviera |
| Year Released | 2006 | 1991 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1970 cc | 3800 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 148 HP | 170 HP |
| Engine RPM | 6300 RPM | 4800 RPM |
| Torque | 181 Nm | 285 Nm |
| Torque RPM | 3800 RPM | 3200 RPM |
| Engine Bore Size | 83 mm | 96.5 mm |
| Engine Stroke Size | 91 mm | 86.4 mm |
| Engine Compression Ratio | 10.0:1 | 8.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1585 kg | 1520 kg |
| Vehicle Length | 4440 mm | 5040 mm |
| Vehicle Width | 1750 mm | 1830 mm |
| Vehicle Height | 1440 mm | 1350 mm |
| Wheelbase Size | 2600 mm | 2760 mm |
