1956 AC Ace vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 53 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 2,497 cc (6 cylinders), 2009 BMW Z4 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (176 HP @ 5800 RPM) has 53 more horse power than 1956 AC Ace. (123 HP @ 6000 RPM) In normal driving conditions, 2009 BMW Z4 should accelerate faster than 1956 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 451 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, 2009 BMW Z4 (230 Nm) has 63 more torque (in Nm) than 1956 AC Ace. (167 Nm). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1956 AC Ace.
Compare all specifications:
| 1956 AC Ace | 2009 BMW Z4 | |
| Make | AC | BMW |
| Model | Ace | Z4 |
| Year Released | 1956 | 2009 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 123 HP | 176 HP |
| Engine RPM | 6000 RPM | 5800 RPM |
| Torque | 167 Nm | 230 Nm |
| Engine Bore Size | 66 mm | 82 mm |
| Engine Stroke Size | 96 mm | 78.8 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 894 kg | 1345 kg |
| Vehicle Length | 3850 mm | 4100 mm |
| Vehicle Width | 1520 mm | 1790 mm |
| Vehicle Height | 1250 mm | 1310 mm |
| Wheelbase Size | 2290 mm | 2500 mm |
| Fuel Tank Capacity | 59 L | 55 L |
