2007 Audi A4 vs. 2009 Mercedes-Benz R
To start off, 2009 Mercedes-Benz R is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 3,121 cc, 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 5100 RPM) has 42 more horse power than 2009 Mercedes-Benz R. (210 HP @ 3800 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 2009 Mercedes-Benz R. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 500 kg more than 2009 Mercedes-Benz R. 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 Mercedes-Benz R (540 Nm @ 1600 RPM) has 210 more torque (in Nm) than 2007 Audi A4. (330 Nm @ 3250 RPM). This means 2009 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2007 Audi A4.
Compare all specifications:
| 2007 Audi A4 | 2009 Mercedes-Benz R | |
| Make | Audi | Mercedes-Benz |
| Model | A4 | R |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3121 cc | 2985 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 252 HP | 210 HP |
| Engine RPM | 5100 RPM | 3800 RPM |
| Torque | 330 Nm | 540 Nm |
| Torque RPM | 3250 RPM | 1600 RPM |
| Engine Compression Ratio | 12.5:1 | 10.7:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 6 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1740 kg | 1240 kg |
| Vehicle Length | 4580 mm | 5160 mm |
| Vehicle Width | 1400 mm | 1960 mm |
| Vehicle Height | 1780 mm | 1670 mm |
| Wheelbase Size | 2660 mm | 3220 mm |
| Fuel Consumption Overall | 11.1 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
