2004 Audi A4 vs. 1991 BMW M12
To start off, 2004 Audi A4 is newer by 13 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, 1991 BMW M12 (296 HP @ 5200 RPM) has 95 more horse power than 2004 Audi A4. (201 HP @ 3500 RPM) In normal driving conditions, 1991 BMW M12 should accelerate faster than 2004 Audi A4.
Because 2004 Audi A4 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, 2004 Audi A4 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, both vehicles can yield 450 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles. 2004 Audi A4 has automatic transmission and 1991 BMW M12 has manual transmission. 1991 BMW M12 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Audi A4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 Audi A4 | 1991 BMW M12 | |
| Make | Audi | BMW |
| Model | A4 | M12 |
| Year Released | 2004 | 1991 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 2967 cc | 4988 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | V | V |
| Horse Power | 201 HP | 296 HP |
| Engine RPM | 3500 RPM | 5200 RPM |
| Torque | 450 Nm | 450 Nm |
| Torque RPM | 1400 RPM | 4100 RPM |
| Engine Bore Size | 83 mm | 84 mm |
| Engine Stroke Size | 91.4 mm | 75 mm |
| Engine Compression Ratio | 17.0:1 | 8.8:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Length | 4590 mm | 4370 mm |
| Vehicle Width | 1780 mm | 2000 mm |
| Vehicle Height | 1430 mm | 1110 mm |
| Wheelbase Size | 2470 mm | 2610 mm |
