2007 Audi S4 vs. 1991 BMW M12
To start off, 2007 Audi S4 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 BMW M12. In addition, the cost of maintenance, including insurance, on 1991 BMW M12 would be higher. At 4,988 cc (12 cylinders), 1991 BMW M12 is equipped with a bigger engine. In terms of performance, 2007 Audi S4 (339 HP @ 7000 RPM) has 43 more horse power than 1991 BMW M12. (296 HP @ 5200 RPM). In normal driving conditions, 2007 Audi S4 should accelerate faster than 1991 BMW M12.
Because 2007 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 1991 BMW M12. 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, 1991 BMW M12 (450 Nm @ 4100 RPM) has 40 more torque (in Nm) than 2007 Audi S4. (410 Nm @ 3500 RPM). This means 1991 BMW M12 will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi S4.
Compare all specifications:
| 2007 Audi S4 | 1991 BMW M12 | |
| Make | Audi | BMW |
| Model | S4 | M12 |
| Year Released | 2007 | 1991 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 4163 cc | 4988 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Horse Power | 339 HP | 296 HP |
| Engine RPM | 7000 RPM | 5200 RPM |
| Torque | 410 Nm | 450 Nm |
| Torque RPM | 3500 RPM | 4100 RPM |
| Engine Compression Ratio | 11.0:1 | 8.8:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4580 mm | 4370 mm |
| Vehicle Width | 1790 mm | 2000 mm |
| Vehicle Height | 1450 mm | 1110 mm |
| Wheelbase Size | 2660 mm | 2610 mm |
