2009 Acura RDX vs. 1991 Audi S2
To start off, 2009 Acura RDX is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Audi S2. In addition, the cost of maintenance, including insurance, on 1991 Audi S2 would be higher. At 2,300 cc (4 cylinders), 2009 Acura RDX is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (240 HP @ 6000 RPM) has 24 more horse power than 1991 Audi S2. (216 HP @ 5900 RPM). In normal driving conditions, 2009 Acura RDX should accelerate faster than 1991 Audi S2. With that said, vehicle weight also plays an important factor in acceleration. 2009 Acura RDX weights approximately 30 kg more than 1991 Audi S2. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 Acura RDX (353 Nm @ 4500 RPM) has 44 more torque (in Nm) than 1991 Audi S2. (309 Nm @ 1950 RPM). This means 2009 Acura RDX will have an easier job in driving up hills or pulling heavy equipment than 1991 Audi S2. 2009 Acura RDX has automatic transmission and 1991 Audi S2 has manual transmission. 1991 Audi S2 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Acura RDX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Acura RDX | 1991 Audi S2 | |
| Make | Acura | Audi |
| Model | RDX | S2 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2300 cc | 2226 cc |
| Engine Cylinders | 4 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 240 HP | 216 HP |
| Engine RPM | 6000 RPM | 5900 RPM |
| Torque | 353 Nm | 309 Nm |
| Torque RPM | 4500 RPM | 1950 RPM |
| Engine Compression Ratio | 11.0:1 | 9.3:1 |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1450 kg | 1420 kg |
| Vehicle Length | 4600 mm | 4410 mm |
| Vehicle Width | 1880 mm | 1720 mm |
| Vehicle Height | 1660 mm | 1380 mm |
| Wheelbase Size | 2660 mm | 2560 mm |
| Fuel Consumption Highway | 10.7 L/100km | 9.3 L/100km |
| Fuel Consumption City | 13.8 L/100km | 14.3 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 8.3 L/100km |
| Fuel Tank Capacity | 68 L | 70 L |
