1975 AC 428 vs. 1971 Saab 99
To start off, 1975 AC 428 is newer by 4 year(s). Which means there will be less support and parts availability for 1971 Saab 99. In addition, the cost of maintenance, including insurance, on 1971 Saab 99 would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 1975 AC 428 (298 HP @ 4600 RPM) has 219 more horse power than 1971 Saab 99. (79 HP @ 5200 RPM). In normal driving conditions, 1975 AC 428 should accelerate faster than 1971 Saab 99. With that said, vehicle weight also plays an important factor in acceleration. 1975 AC 428 weights approximately 360 kg more than 1971 Saab 99. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1975 AC 428 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1975 AC 428. However, in wet, icy, snow, or gravel driving conditions, 1971 Saab 99, being front wheel drive (FWD), will offer much better control with better grip. 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, 1975 AC 428 (639 Nm @ 2800 RPM) has 511 more torque (in Nm) than 1971 Saab 99. (128 Nm @ 3000 RPM). This means 1975 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1971 Saab 99.
Compare all specifications:
| 1975 AC 428 | 1971 Saab 99 | |
| Make | AC | Saab |
| Model | 428 | 99 |
| Year Released | 1975 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 1709 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 298 HP | 79 HP |
| Engine RPM | 4600 RPM | 5200 RPM |
| Torque | 639 Nm | 128 Nm |
| Torque RPM | 2800 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 1430 kg | 1070 kg |
| Vehicle Length | 4430 mm | 4380 mm |
| Vehicle Width | 1710 mm | 1680 mm |
| Vehicle Height | 1310 mm | 1450 mm |
| Wheelbase Size | 2450 mm | 2530 mm |
