1991 Porsche 928 vs. 2009 Audi A5
To start off, 2009 Audi A5 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Porsche 928. In addition, the cost of maintenance, including insurance, on 1991 Porsche 928 would be higher. At 4,663 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (306 HP @ 5900 RPM) has 45 more horse power than 2009 Audi A5. (261 HP @ 6500 RPM). In normal driving conditions, 1991 Porsche 928 should accelerate faster than 2009 Audi A5. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A5 weights approximately 6 kg more than 1991 Porsche 928.
Because 2009 Audi A5 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Porsche 928. In wet, icy, snow, or gravel driving conditions, 2009 Audi A5 will offer significantly more control. 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, 1991 Porsche 928 (408 Nm @ 4100 RPM) has 78 more torque (in Nm) than 2009 Audi A5. (330 Nm @ 3000 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A5. 2009 Audi A5 has automatic transmission and 1991 Porsche 928 has manual transmission. 1991 Porsche 928 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Porsche 928 | 2009 Audi A5 | |
| Make | Porsche | Audi |
| Model | 928 | A5 |
| Year Released | 1991 | 2009 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4663 cc | 3197 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 306 HP | 261 HP |
| Engine RPM | 5900 RPM | 6500 RPM |
| Torque | 408 Nm | 330 Nm |
| Torque RPM | 4100 RPM | 3000 RPM |
| Engine Compression Ratio | 10.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 319 km/hour | 250 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1530 kg | 1536 kg |
| Vehicle Length | 4530 mm | 4630 mm |
| Vehicle Width | 2060 mm | 1860 mm |
| Vehicle Height | 1290 mm | 1380 mm |
| Wheelbase Size | 2510 mm | 2760 mm |
| Fuel Tank Capacity | 76 L | 64 L |
