2007 Audi A4 vs. 1991 Mazda 121
To start off, 2007 Audi A4 is newer by 16 year(s). Which means there will be less support and parts availability for 1991 Mazda 121. In addition, the cost of maintenance, including insurance, on 1991 Mazda 121 would be higher. At 3,123 cc, 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 5100 RPM) has 181 more horse power than 1991 Mazda 121. (71 HP @ 6000 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1991 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 878 kg more than 1991 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2007 Audi A4 (330 Nm @ 3250 RPM) has 226 more torque (in Nm) than 1991 Mazda 121. (104 Nm @ 3700 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mazda 121.
Compare all specifications:
| 2007 Audi A4 | 1991 Mazda 121 | |
| Make | Audi | Mazda |
| Model | A4 | 121 |
| Year Released | 2007 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 1322 cc |
| Horse Power | 252 HP | 71 HP |
| Engine RPM | 5100 RPM | 6000 RPM |
| Torque | 330 Nm | 104 Nm |
| Torque RPM | 3250 RPM | 3700 RPM |
| Engine Bore Size | 84.5 mm | 71 mm |
| Engine Stroke Size | 92.8 mm | 83.6 mm |
| Engine Compression Ratio | 12.5:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1698 kg | 820 kg |
| Vehicle Length | 4580 mm | 3820 mm |
| Vehicle Width | 1400 mm | 1660 mm |
| Vehicle Height | 1780 mm | 1480 mm |
| Wheelbase Size | 2660 mm | 2460 mm |
| Fuel Tank Capacity | 70 L | 43 L |
