1991 Buick Riviera vs. 1970 Innocenti IM 3
To start off, 1991 Buick Riviera is newer by 21 year(s). Which means there will be less support and parts availability for 1970 Innocenti IM 3. In addition, the cost of maintenance, including insurance, on 1970 Innocenti IM 3 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 114 more horse power than 1970 Innocenti IM 3. (56 HP @ 5500 RPM). In normal driving conditions, 1991 Buick Riviera should accelerate faster than 1970 Innocenti IM 3. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Riviera weights approximately 630 kg more than 1970 Innocenti IM 3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 202 more torque (in Nm) than 1970 Innocenti IM 3. (83 Nm @ 2500 RPM). This means 1991 Buick Riviera will have an easier job in driving up hills or pulling heavy equipment than 1970 Innocenti IM 3. 1991 Buick Riviera has automatic transmission and 1970 Innocenti IM 3 has manual transmission. 1970 Innocenti IM 3 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 Buick Riviera | 1970 Innocenti IM 3 | |
| Make | Buick | Innocenti |
| Model | Riviera | IM 3 |
| Year Released | 1991 | 1970 |
| Engine Position | Front | Front |
| Engine Size | 3800 cc | 1098 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 170 HP | 56 HP |
| Engine RPM | 4800 RPM | 5500 RPM |
| Torque | 285 Nm | 83 Nm |
| Torque RPM | 3200 RPM | 2500 RPM |
| Engine Bore Size | 96.5 mm | 64.6 mm |
| Engine Stroke Size | 86.4 mm | 83.7 mm |
| Engine Compression Ratio | 8.5:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Vehicle Weight | 1520 kg | 890 kg |
| Vehicle Length | 5040 mm | 3760 mm |
| Vehicle Width | 1830 mm | 1570 mm |
| Vehicle Height | 1350 mm | 1380 mm |
| Wheelbase Size | 2760 mm | 2380 mm |
