2009 Audi A4 vs. 1978 Renault 18
To start off, 2009 Audi A4 is newer by 31 year(s). Which means there will be less support and parts availability for 1978 Renault 18. In addition, the cost of maintenance, including insurance, on 1978 Renault 18 would be higher. At 1,995 cc (4 cylinders), 1978 Renault 18 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (158 HP @ 4500 RPM) has 54 more horse power than 1978 Renault 18. (104 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1978 Renault 18. With that said, vehicle weight also plays an important factor in acceleration. 1978 Renault 18 weights approximately 137 kg more than 2009 Audi A4.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2009 Audi A4 (250 Nm @ 1500 RPM) has 90 more torque (in Nm) than 1978 Renault 18. (160 Nm @ 3000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Renault 18. 2009 Audi A4 has automatic transmission and 1978 Renault 18 has manual transmission. 1978 Renault 18 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 1978 Renault 18 | |
| Make | Audi | Renault |
| Model | A4 | 18 |
| Year Released | 2009 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 158 HP | 104 HP |
| Engine RPM | 4500 RPM | 5500 RPM |
| Torque | 250 Nm | 160 Nm |
| Torque RPM | 1500 RPM | 3000 RPM |
| Engine Bore Size | 82.5 mm | 88 mm |
| Engine Stroke Size | 84.1 mm | 82 mm |
| Top Speed | 218 km/hour | 171 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 930 kg | 1067 kg |
| Vehicle Length | 4710 mm | 4380 mm |
| Vehicle Width | 2010 mm | 1680 mm |
| Vehicle Height | 1430 mm | 1410 mm |
| Wheelbase Size | 2810 mm | 2470 mm |
| Fuel Tank Capacity | 65 L | 53 L |
