2007 Audi S4 vs. 1981 BMW 745
To start off, 2007 Audi S4 is newer by 26 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 4,163 cc (8 cylinders), 2007 Audi S4 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (340 HP @ 7000 RPM) has 88 more horse power than 1981 BMW 745. (252 HP @ 5200 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 1981 BMW 745. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 321 kg more than 2007 Audi S4.
Because 2007 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1981 BMW 745. In wet, icy, snow, or gravel driving conditions, 2007 Audi S4 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, 2007 Audi S4 (411 Nm @ 3500 RPM) has 31 more torque (in Nm) than 1981 BMW 745. (380 Nm @ 2200 RPM). This means 2007 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 745. 1981 BMW 745 has automatic transmission and 2007 Audi S4 has manual transmission. 2007 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1981 BMW 745 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Audi S4 | 1981 BMW 745 | |
| Make | Audi | BMW |
| Model | S4 | 745 |
| Year Released | 2007 | 1981 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3430 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 340 HP | 252 HP |
| Engine RPM | 7000 RPM | 5200 RPM |
| Torque | 411 Nm | 380 Nm |
| Torque RPM | 3500 RPM | 2200 RPM |
| Engine Bore Size | 84.5 mm | 92 mm |
| Engine Stroke Size | 93 mm | 86 mm |
| Top Speed | 250 km/hour | 227 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1275 kg | 1596 kg |
| Vehicle Length | 4580 mm | 4870 mm |
| Vehicle Width | 1790 mm | 1810 mm |
| Vehicle Height | 1450 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
| Fuel Tank Capacity | 63 L | 100 L |
