1958 AC Ace vs. 1981 Mercury Cougar
To start off, 1981 Mercury Cougar is newer by 23 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 3,797 cc (6 cylinders), 1981 Mercury Cougar is equipped with a bigger engine. In terms of performance, 1958 AC Ace (125 HP @ 6000 RPM) has 11 more horse power than 1981 Mercury Cougar. (114 HP @ 4000 RPM). In normal driving conditions, 1958 AC Ace should accelerate faster than 1981 Mercury Cougar. With that said, vehicle weight also plays an important factor in acceleration. 1981 Mercury Cougar weights approximately 462 kg more than 1958 AC Ace.
Let's talk about torque, 1981 Mercury Cougar (237 Nm @ 2600 RPM) has 70 more torque (in Nm) than 1958 AC Ace. (167 Nm @ 4500 RPM). This means 1981 Mercury Cougar will have an easier job in driving up hills or pulling heavy equipment than 1958 AC Ace.
Compare all specifications:
| 1958 AC Ace | 1981 Mercury Cougar | |
| Make | AC | Mercury |
| Model | Ace | Cougar |
| Year Released | 1958 | 1981 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 3797 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 125 HP | 114 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 167 Nm | 237 Nm |
| Torque RPM | 4500 RPM | 2600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 894 kg | 1356 kg |
| Vehicle Length | 4010 mm | 4960 mm |
| Vehicle Width | 1520 mm | 1810 mm |
| Vehicle Height | 1270 mm | 1370 mm |
| Wheelbase Size | 2290 mm | 2690 mm |
