1999 Audi A4 vs. 1968 Opel Diplomat
To start off, 1999 Audi A4 is newer by 31 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, 1999 Audi A4 (248 HP @ 5700 RPM) has 21 more horse power than 1968 Opel Diplomat. (227 HP @ 4700 RPM). In normal driving conditions, 1999 Audi A4 should accelerate faster than 1968 Opel Diplomat. With that said, vehicle weight also plays an important factor in acceleration. 1968 Opel Diplomat weights approximately 390 kg more than 1999 Audi A4.
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, 1999 Audi A4, 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 107 more torque (in Nm) than 1999 Audi A4. (320 Nm @ 1750 RPM). This means 1968 Opel Diplomat will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi A4.
Compare all specifications:
| 1999 Audi A4 | 1968 Opel Diplomat | |
| Make | Audi | Opel |
| Model | A4 | Diplomat |
| Year Released | 1999 | 1968 |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 5354 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 248 HP | 227 HP |
| Engine RPM | 5700 RPM | 4700 RPM |
| Torque | 320 Nm | 427 Nm |
| Torque RPM | 1750 RPM | 3000 RPM |
| Engine Bore Size | 81 mm | 101.6 mm |
| Engine Stroke Size | 86.4 mm | 82.6 mm |
| Engine Compression Ratio | 9.5:1 | 10.5:1 |
| Top Speed | 214 km/hour | 202 km/hour |
| Acceleration 0-100mph | 9.6 seconds | 10.3 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1300 kg | 1690 kg |
| Vehicle Length | 4480 mm | 4960 mm |
| Vehicle Width | 1740 mm | 1910 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2620 mm | 2850 mm |
| Fuel Tank Capacity | 62 L | 80 L |
