2009 Audi A4 vs. 1990 BMW 518
To start off, 2009 Audi A4 is newer by 19 year(s). Which means there will be less support and parts availability for 1990 BMW 518. In addition, the cost of maintenance, including insurance, on 1990 BMW 518 would be higher. At 1,968 cc (4 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (138 HP @ 4000 RPM) has 25 more horse power than 1990 BMW 518. (113 HP @ 5500 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1990 BMW 518. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 274 kg more than 1990 BMW 518. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1990 BMW 518 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 1990 BMW 518. However, in wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A4 (320 Nm @ 1750 RPM) has 159 more torque (in Nm) than 1990 BMW 518. (161 Nm @ 4250 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 518.
Compare all specifications:
| 2009 Audi A4 | 1990 BMW 518 | |
| Make | Audi | BMW |
| Model | A4 | 518 |
| Year Released | 2009 | 1990 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1968 cc | 1766 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 138 HP | 113 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 320 Nm | 161 Nm |
| Torque RPM | 1750 RPM | 4250 RPM |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 95.5 mm | 81 mm |
| Engine Compression Ratio | 18.0:1 | 8.8:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1434 kg | 1160 kg |
| Vehicle Length | 4590 mm | 4730 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1430 mm | 1420 mm |
| Wheelbase Size | 2650 mm | 2770 mm |
| Fuel Tank Capacity | 70 L | 52 L |
