2009 Aston Martin DB9 vs. 1991 Mercedes-Benz SL
To start off, 2009 Aston Martin DB9 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 1991 Mercedes-Benz SL would be higher. At 5,933 cc (12 cylinders), 2009 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2009 Aston Martin DB9 (510 HP @ 6500 RPM) has 282 more horse power than 1991 Mercedes-Benz SL. (228 HP @ 6400 RPM). In normal driving conditions, 2009 Aston Martin DB9 should accelerate faster than 1991 Mercedes-Benz SL. With that said, vehicle weight also plays an important factor in acceleration. 2009 Aston Martin DB9 weights approximately 70 kg more than 1991 Mercedes-Benz SL. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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 Aston Martin DB9 (570 Nm @ 5750 RPM) has 298 more torque (in Nm) than 1991 Mercedes-Benz SL. (272 Nm @ 4600 RPM). This means 2009 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mercedes-Benz SL.
Compare all specifications:
| 2009 Aston Martin DB9 | 1991 Mercedes-Benz SL | |
| Make | Aston Martin | Mercedes-Benz |
| Model | DB9 | SL |
| Year Released | 2009 | 1991 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5933 cc | 2961 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 510 HP | 228 HP |
| Engine RPM | 6500 RPM | 6400 RPM |
| Torque | 570 Nm | 272 Nm |
| Torque RPM | 5750 RPM | 4600 RPM |
| Engine Bore Size | 89 mm | 88.5 mm |
| Engine Stroke Size | 79.5 mm | 80.3 mm |
| Engine Compression Ratio | 10.9:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1760 kg | 1690 kg |
| Vehicle Length | 4730 mm | 4480 mm |
| Vehicle Width | 1910 mm | 1820 mm |
| Vehicle Height | 1290 mm | 1300 mm |
| Wheelbase Size | 2750 mm | 2520 mm |
| Fuel Tank Capacity | 78 L | 80 L |
