1956 AC Ace vs. 1981 BMW 518
To start off, 1981 BMW 518 is newer by 25 year(s). Which means there will be less support and parts availability for 1956 AC Ace. In addition, the cost of maintenance, including insurance, on 1956 AC Ace would be higher. At 1,971 cc (6 cylinders), 1956 AC Ace is equipped with a bigger engine. In terms of performance, 1981 BMW 518 (90 HP @ 5500 RPM) has 16 more horse power than 1956 AC Ace. (74 HP @ 4500 RPM) In normal driving conditions, 1981 BMW 518 should accelerate faster than 1956 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 518 weights approximately 246 kg more than 1956 AC Ace. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1956 AC Ace (167 Nm) has 27 more torque (in Nm) than 1981 BMW 518. (140 Nm). This means 1956 AC Ace will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 518.
Compare all specifications:
| 1956 AC Ace | 1981 BMW 518 | |
| Make | AC | BMW |
| Model | Ace | 518 |
| Year Released | 1956 | 1981 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 1766 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 74 HP | 90 HP |
| Engine RPM | 4500 RPM | 5500 RPM |
| Torque | 167 Nm | 140 Nm |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 894 kg | 1140 kg |
| Vehicle Length | 3850 mm | 4630 mm |
| Vehicle Width | 1520 mm | 1710 mm |
| Vehicle Height | 1250 mm | 1430 mm |
| Wheelbase Size | 2290 mm | 2630 mm |
