2003 AC Cobra vs. 2006 Mercedes-Benz R
To start off, 2006 Mercedes-Benz R is newer by 3 year(s). Which means there will be less support and parts availability for 2003 AC Cobra. In addition, the cost of maintenance, including insurance, on 2003 AC Cobra would be higher. At 3,506 cc (8 cylinders), 2003 AC Cobra is equipped with a bigger engine. In terms of performance, 2003 AC Cobra (350 HP @ 6500 RPM) has 129 more horse power than 2006 Mercedes-Benz R. (221 HP @ 3800 RPM). In normal driving conditions, 2003 AC Cobra should accelerate faster than 2006 Mercedes-Benz R. With that said, vehicle weight also plays an important factor in acceleration. 2006 Mercedes-Benz R weights approximately 1208 kg more than 2003 AC Cobra.
Because 2006 Mercedes-Benz R is four wheel drive (4WD), it will have significant more traction and grip than 2003 AC Cobra. In wet, icy, snow, or gravel driving conditions, 2006 Mercedes-Benz R will offer significantly more control. 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, 2006 Mercedes-Benz R (511 Nm @ 1600 RPM) has 111 more torque (in Nm) than 2003 AC Cobra. (400 Nm @ 4000 RPM). This means 2006 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2003 AC Cobra. 2006 Mercedes-Benz R has automatic transmission and 2003 AC Cobra has manual transmission. 2003 AC Cobra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Mercedes-Benz R will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 AC Cobra | 2006 Mercedes-Benz R | |
| Make | AC | Mercedes-Benz |
| Model | Cobra | R |
| Year Released | 2003 | 2006 |
| Body Type | Roadster | Minivan |
| Engine Position | Front | Front |
| Engine Size | 3506 cc | 2987 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 350 HP | 221 HP |
| Engine RPM | 6500 RPM | 3800 RPM |
| Torque | 400 Nm | 511 Nm |
| Torque RPM | 4000 RPM | 1600 RPM |
| Engine Bore Size | 83 mm | 83 mm |
| Engine Stroke Size | 81 mm | 92 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 6 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1062 kg | 2270 kg |
| Vehicle Length | 4210 mm | 5160 mm |
| Vehicle Width | 1750 mm | 1930 mm |
| Vehicle Height | 1210 mm | 1660 mm |
| Wheelbase Size | 2300 mm | 3220 mm |
