1957 AC Ace vs. 1991 Opel Calibra
To start off, 1991 Opel Calibra is newer by 34 year(s). Which means there will be less support and parts availability for 1957 AC Ace. In addition, the cost of maintenance, including insurance, on 1957 AC Ace would be higher. At 1,998 cc (4 cylinders), 1991 Opel Calibra is equipped with a bigger engine. In terms of performance, 1991 Opel Calibra (201 HP @ 5600 RPM) has 127 more horse power than 1957 AC Ace. (74 HP @ 4500 RPM) In normal driving conditions, 1991 Opel Calibra should accelerate faster than 1957 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 1991 Opel Calibra weights approximately 533 kg more than 1957 AC Ace. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1957 AC Ace | 1991 Opel Calibra | |
| Make | AC | Opel |
| Model | Ace | Calibra |
| Year Released | 1957 | 1991 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1990 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 74 HP | 201 HP |
| Engine RPM | 4500 RPM | 5600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 890 kg | 1423 kg |
| Vehicle Length | 3850 mm | 4500 mm |
| Vehicle Width | 1520 mm | 1700 mm |
| Vehicle Height | 1250 mm | 1610 mm |
| Wheelbase Size | 2290 mm | 2450 mm |
| Fuel Tank Capacity | 59 L | 40 L |
