1958 AC Ace vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 48 year(s). Which means there will be less support and parts availability for 1958 AC Ace. In addition, the cost of maintenance, including insurance, on 1958 AC Ace would be higher. At 2,494 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (189 HP @ 6000 RPM) has 64 more horse power than 1958 AC Ace. (125 HP @ 6000 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1958 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 441 kg more than 1958 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, 2006 BMW Z4 (245 Nm @ 3500 RPM) has 78 more torque (in Nm) than 1958 AC Ace. (167 Nm @ 4500 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1958 AC Ace.
Compare all specifications:
| 1958 AC Ace | 2006 BMW Z4 | |
| Make | AC | BMW |
| Model | Ace | Z4 |
| Year Released | 1958 | 2006 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 125 HP | 189 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 167 Nm | 245 Nm |
| Torque RPM | 4500 RPM | 3500 RPM |
| Engine Bore Size | 66 mm | 84 mm |
| Engine Stroke Size | 96 mm | 75 mm |
| Engine Compression Ratio | 9.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 894 kg | 1335 kg |
| Vehicle Length | 4010 mm | 4100 mm |
| Vehicle Width | 1520 mm | 1790 mm |
| Vehicle Height | 1270 mm | 1310 mm |
| Wheelbase Size | 2290 mm | 2500 mm |
| Fuel Tank Capacity | 59 L | 55 L |
