1991 Audi S2 vs. 1991 Buick Riviera
To start off, both 1991 Audi S2 and 1991 Buick Riviera were released in the same year (1991). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,800 cc (6 cylinders), 1991 Buick Riviera is equipped with a bigger engine. In terms of performance, 1991 Audi S2 (216 HP @ 5900 RPM) has 46 more horse power than 1991 Buick Riviera. (170 HP @ 4800 RPM). In normal driving conditions, 1991 Audi S2 should accelerate faster than 1991 Buick Riviera. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Riviera weights approximately 100 kg more than 1991 Audi S2.
Because 1991 Audi S2 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, 1991 Audi S2 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, 1991 Audi S2 (309 Nm @ 1950 RPM) has 24 more torque (in Nm) than 1991 Buick Riviera. (285 Nm @ 3200 RPM). This means 1991 Audi S2 will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Riviera. 1991 Buick Riviera has automatic transmission and 1991 Audi S2 has manual transmission. 1991 Audi S2 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:
| 1991 Audi S2 | 1991 Buick Riviera | |
| Make | Audi | Buick |
| Model | S2 | Riviera |
| Year Released | 1991 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2226 cc | 3800 cc |
| Engine Cylinders | 5 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 216 HP | 170 HP |
| Engine RPM | 5900 RPM | 4800 RPM |
| Torque | 309 Nm | 285 Nm |
| Torque RPM | 1950 RPM | 3200 RPM |
| Engine Bore Size | 81.1 mm | 96.5 mm |
| Engine Stroke Size | 86.4 mm | 86.4 mm |
| Engine Compression Ratio | 9.3:1 | 8.5:1 |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1420 kg | 1520 kg |
| Vehicle Length | 4410 mm | 5040 mm |
| Vehicle Width | 1720 mm | 1830 mm |
| Vehicle Height | 1380 mm | 1350 mm |
| Wheelbase Size | 2560 mm | 2760 mm |
