1975 AC 428 vs. 1999 BMW M5
To start off, 1999 BMW M5 is newer by 24 year(s). Which means there will be less support and parts availability for 1975 AC 428. In addition, the cost of maintenance, including insurance, on 1975 AC 428 would be higher. At 7,003 cc (8 cylinders), 1975 AC 428 is equipped with a bigger engine. In terms of performance, 1999 BMW M5 (401 HP @ 7400 RPM) has 103 more horse power than 1975 AC 428. (298 HP @ 4600 RPM) In normal driving conditions, 1999 BMW M5 should accelerate faster than 1975 AC 428. With that said, vehicle weight also plays an important factor in acceleration. 1999 BMW M5 weights approximately 180 kg more than 1975 AC 428. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 1975 AC 428 (639 Nm) has 140 more torque (in Nm) than 1999 BMW M5. (499 Nm). This means 1975 AC 428 will have an easier job in driving up hills or pulling heavy equipment than 1999 BMW M5.
Compare all specifications:
| 1975 AC 428 | 1999 BMW M5 | |
| Make | AC | BMW |
| Model | 428 | M5 |
| Year Released | 1975 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 7003 cc | 4900 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 298 HP | 401 HP |
| Engine RPM | 4600 RPM | 7400 RPM |
| Torque | 639 Nm | 499 Nm |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1430 kg | 1610 kg |
| Vehicle Length | 4430 mm | 4780 mm |
| Vehicle Width | 1710 mm | 1810 mm |
| Vehicle Height | 1310 mm | 1440 mm |
| Wheelbase Size | 2450 mm | 2730 mm |
