1949 Allard J1 vs. 1971 Renault 15
To start off, 1971 Renault 15 is newer by 22 year(s). Which means there will be less support and parts availability for 1949 Allard J1. In addition, the cost of maintenance, including insurance, on 1949 Allard J1 would be higher. At 3,917 cc (8 cylinders), 1949 Allard J1 is equipped with a bigger engine. In terms of performance, 1949 Allard J1 (100 HP @ 3800 RPM) has 11 more horse power than 1971 Renault 15. (89 HP @ 5500 RPM). In normal driving conditions, 1949 Allard J1 should accelerate faster than 1971 Renault 15. With that said, vehicle weight also plays an important factor in acceleration. 1949 Allard J1 weights approximately 120 kg more than 1971 Renault 15. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1949 Allard J1 (306 Nm @ 2500 RPM) has 181 more torque (in Nm) than 1971 Renault 15. (125 Nm @ 3000 RPM). This means 1949 Allard J1 will have an easier job in driving up hills or pulling heavy equipment than 1971 Renault 15.
Compare all specifications:
| 1949 Allard J1 | 1971 Renault 15 | |
| Make | Allard | Renault |
| Model | J1 | 15 |
| Year Released | 1949 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 3917 cc | 1565 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 100 HP | 89 HP |
| Engine RPM | 3800 RPM | 5500 RPM |
| Torque | 306 Nm | 125 Nm |
| Torque RPM | 2500 RPM | 3000 RPM |
| Engine Bore Size | 81 mm | 77 mm |
| Engine Stroke Size | 95.3 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1140 kg | 1020 kg |
| Vehicle Length | 3690 mm | 4260 mm |
| Vehicle Width | 1480 mm | 1640 mm |
| Vehicle Height | 1510 mm | 1320 mm |
| Wheelbase Size | 2440 mm | 2440 mm |
| Fuel Tank Capacity | 90 L | 38 L |
