1993 Cadillac Allante vs. 1968 Opel Diplomat
To start off, 1993 Cadillac Allante is newer by 25 year(s). Which means there will be less support and parts availability for 1968 Opel Diplomat. In addition, the cost of maintenance, including insurance, on 1968 Opel Diplomat would be higher. At 5,354 cc (8 cylinders), 1968 Opel Diplomat is equipped with a bigger engine. In terms of performance, 1993 Cadillac Allante (295 HP @ 5600 RPM) has 68 more horse power than 1968 Opel Diplomat. (227 HP @ 4700 RPM). In normal driving conditions, 1993 Cadillac Allante should accelerate faster than 1968 Opel Diplomat. With that said, vehicle weight also plays an important factor in acceleration. 1993 Cadillac Allante weights approximately 18 kg more than 1968 Opel Diplomat. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1968 Opel Diplomat is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1968 Opel Diplomat. However, in wet, icy, snow, or gravel driving conditions, 1993 Cadillac Allante, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1968 Opel Diplomat (427 Nm @ 3000 RPM) has 34 more torque (in Nm) than 1993 Cadillac Allante. (393 Nm @ 4400 RPM). This means 1968 Opel Diplomat will have an easier job in driving up hills or pulling heavy equipment than 1993 Cadillac Allante.
Compare all specifications:
| 1993 Cadillac Allante | 1968 Opel Diplomat | |
| Make | Cadillac | Opel |
| Model | Allante | Diplomat |
| Year Released | 1993 | 1968 |
| Engine Position | Front | Front |
| Engine Size | 4563 cc | 5354 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 295 HP | 227 HP |
| Engine RPM | 5600 RPM | 4700 RPM |
| Torque | 393 Nm | 427 Nm |
| Torque RPM | 4400 RPM | 3000 RPM |
| Engine Bore Size | 93 mm | 101.6 mm |
| Engine Stroke Size | 84 mm | 82.6 mm |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1708 kg | 1690 kg |
| Vehicle Length | 4550 mm | 4960 mm |
| Vehicle Width | 1870 mm | 1910 mm |
| Vehicle Height | 1310 mm | 1450 mm |
| Wheelbase Size | 2530 mm | 2850 mm |
