1971 AC 428 vs. 2011 Audi S4
To start off, 2011 Audi S4 is newer by 40 year(s). Which means there will be less support and parts availability for 1971 AC 428. In addition, the cost of maintenance, including insurance, on 1971 AC 428 would be higher. At 7,003 cc (8 cylinders), 1971 AC 428 is equipped with a bigger engine. In terms of performance, 2011 Audi S4 (333 HP @ 5500 RPM) has 35 more horse power than 1971 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 2011 Audi S4 should accelerate faster than 1971 AC 428.
Because 2011 Audi S4 is all wheel drive (AWD), it will have significant more traction and grip than 1971 AC 428. In wet, icy, snow, or gravel driving conditions, 2011 Audi S4 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, 1971 AC 428 (639 Nm @ 2800 RPM) has 199 more torque (in Nm) than 2011 Audi S4. (440 Nm @ 2900 RPM). This means 1971 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 2011 Audi S4.
Compare all specifications:
| 1971 AC 428 | 2011 Audi S4 | |
| Make | AC | Audi |
| Model | 428 | S4 |
| Year Released | 1971 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 3000 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 298 HP | 333 HP |
| Engine RPM | 4600 RPM | 5500 RPM |
| Torque | 639 Nm | 440 Nm |
| Torque RPM | 2800 RPM | 2900 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | 6-speed manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Length | 4430 mm | 4704 mm |
| Vehicle Width | 1710 mm | 1829 mm |
| Vehicle Height | 1310 mm | 1427 mm |
| Wheelbase Size | 2450 mm | 2809 mm |
