1991 Audi Coupe vs. 2009 Audi S4
To start off, 2009 Audi S4 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Audi Coupe. In addition, the cost of maintenance, including insurance, on 1991 Audi Coupe would be higher. At 4,161 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 6800 RPM) has 166 more horse power than 1991 Audi Coupe. (174 HP @ 5500 RPM) In normal driving conditions, 2009 Audi S4 should accelerate faster than 1991 Audi Coupe. With that said, vehicle weight also plays an important factor in acceleration. 1991 Audi Coupe weights approximately 244 kg more than 2009 Audi S4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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, 2009 Audi S4 (410 Nm @ 3500 RPM) has 161 more torque (in Nm) than 1991 Audi Coupe. (249 Nm @ 3000 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi Coupe.
Compare all specifications:
| 1991 Audi Coupe | 2009 Audi S4 | |
| Make | Audi | Audi |
| Model | Coupe | S4 |
| Year Released | 1991 | 2009 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2770 cc | 4161 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 174 HP | 340 HP |
| Engine RPM | 5500 RPM | 6800 RPM |
| Torque | 249 Nm | 410 Nm |
| Torque RPM | 3000 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 84.5 mm |
| Engine Stroke Size | 86.4 mm | 92.8 mm |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1174 kg | 930 kg |
| Vehicle Length | 4370 mm | 4580 mm |
| Vehicle Width | 1720 mm | 1780 mm |
| Vehicle Height | 1380 mm | 1400 mm |
| Wheelbase Size | 2560 mm | 2660 mm |
| Fuel Tank Capacity | 80 L | 63 L |
