1987 Audi 90 vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 26 year(s). Which means there will be less support and parts availability for 1987 Audi 90. In addition, the cost of maintenance, including insurance, on 1987 Audi 90 would be higher. At 4,395 cc (8 cylinders), 2013 BMW 6 series is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 302 more horse power than 1987 Audi 90. (135 HP @ 5500 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 1987 Audi 90. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 690 kg more than 1987 Audi 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2013 BMW 6 series (649 Nm @ 4500 RPM) has 463 more torque (in Nm) than 1987 Audi 90. (186 Nm @ 4000 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 1987 Audi 90. 2013 BMW 6 series has automatic transmission and 1987 Audi 90 has manual transmission. 1987 Audi 90 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2013 BMW 6 series will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1987 Audi 90 | 2013 BMW 6 series | |
| Make | Audi | BMW |
| Model | 90 | 6 series |
| Year Released | 1987 | 2013 |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 4395 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 135 HP | 437 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 186 Nm | 649 Nm |
| Torque RPM | 4000 RPM | 4500 RPM |
| Engine Bore Size | 82.5 mm | 89 mm |
| Engine Stroke Size | 86.4 mm | 88 mm |
| Engine Compression Ratio | 10.0:1 | 10.0 :1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | 8-speed automatic |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1310 kg | 2000 kg |
| Vehicle Length | 4400 mm | 4896 mm |
| Vehicle Width | 1700 mm | 2081 mm |
| Vehicle Height | 1400 mm | 1369 mm |
| Wheelbase Size | 2690 mm | 2855 mm |
| Fuel Tank Capacity | 80 L | 70 L |
