2008 Audi S5 vs. 1991 BMW Z1
To start off, 2008 Audi S5 is newer by 17 year(s). Which means there will be less support and parts availability for 1991 BMW Z1. In addition, the cost of maintenance, including insurance, on 1991 BMW Z1 would be higher. At 4,163 cc (8 cylinders), 2008 Audi S5 is equipped with a bigger engine. In terms of performance, 2008 Audi S5 (354 HP @ 6800 RPM) has 179 more horse power than 1991 BMW Z1. (175 HP @ 5800 RPM). In normal driving conditions, 2008 Audi S5 should accelerate faster than 1991 BMW Z1. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S5 weights approximately 515 kg more than 1991 BMW Z1. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi S5 is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW Z1. In wet, icy, snow, or gravel driving conditions, 2008 Audi S5 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, 2008 Audi S5 (441 Nm @ 3500 RPM) has 211 more torque (in Nm) than 1991 BMW Z1. (230 Nm @ 4000 RPM). This means 2008 Audi S5 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW Z1.
Compare all specifications:
| 2008 Audi S5 | 1991 BMW Z1 | |
| Make | Audi | BMW |
| Model | S5 | Z1 |
| Year Released | 2008 | 1991 |
| Body Type | Coupe | Roadster |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2497 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 354 HP | 175 HP |
| Engine RPM | 6800 RPM | 5800 RPM |
| Torque | 441 Nm | 230 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.5 mm | 82 mm |
| Engine Stroke Size | 92.8 mm | 78.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Weight | 1765 kg | 1250 kg |
| Vehicle Length | 4640 mm | 3960 mm |
| Vehicle Width | 1990 mm | 1810 mm |
| Vehicle Height | 1380 mm | 1280 mm |
| Wheelbase Size | 2760 mm | 2450 mm |
