1951 Allard J2 vs. 1981 Audi UR
To start off, 1981 Audi UR is newer by 30 year(s). Which means there will be less support and parts availability for 1951 Allard J2. In addition, the cost of maintenance, including insurance, on 1951 Allard J2 would be higher. At 5,415 cc (8 cylinders), 1951 Allard J2 is equipped with a bigger engine. In terms of performance, 1981 Audi UR (197 HP @ 5500 RPM) has 39 more horse power than 1951 Allard J2. (158 HP @ 3800 RPM) In normal driving conditions, 1981 Audi UR should accelerate faster than 1951 Allard J2. With that said, vehicle weight also plays an important factor in acceleration. 1981 Audi UR weights approximately 270 kg more than 1951 Allard J2. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1951 Allard J2 | 1981 Audi UR | |
| Make | Allard | Audi |
| Model | J2 | UR |
| Year Released | 1951 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 5415 cc | 2144 cc |
| Engine Cylinders | 8 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 158 HP | 197 HP |
| Engine RPM | 3800 RPM | 5500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 980 kg | 1250 kg |
| Vehicle Length | 3780 mm | 4430 mm |
| Vehicle Width | 1730 mm | 1690 mm |
| Vehicle Height | 1300 mm | 1360 mm |
| Wheelbase Size | 2550 mm | 2530 mm |
| Fuel Tank Capacity | 38 L | 70 L |
