2003 Alfa Romeo 166 vs. 2005 Mercedes-Benz R
To start off, 2005 Mercedes-Benz R is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 166 would be higher. At 2,987 cc (6 cylinders), 2005 Mercedes-Benz R is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz R (221 HP @ 4200 RPM) has 73 more horse power than 2003 Alfa Romeo 166. (148 HP @ 6500 RPM) In normal driving conditions, 2005 Mercedes-Benz R should accelerate faster than 2003 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz R weights approximately 760 kg more than 2003 Alfa Romeo 166. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Mercedes-Benz R is four wheel drive (4WD), it will have significant more traction and grip than 2003 Alfa Romeo 166. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Mercedes-Benz R (511 Nm @ 1600 RPM) has 330 more torque (in Nm) than 2003 Alfa Romeo 166. (181 Nm @ 3800 RPM). This means 2005 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 166. 2005 Mercedes-Benz R has automatic transmission and 2003 Alfa Romeo 166 has manual transmission. 2003 Alfa Romeo 166 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Mercedes-Benz R will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2005 Mercedes-Benz R | |
| Make | Alfa Romeo | Mercedes-Benz |
| Model | 166 | R |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 1970 cc | 2987 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 221 HP |
| Engine RPM | 6500 RPM | 4200 RPM |
| Torque | 181 Nm | 511 Nm |
| Torque RPM | 3800 RPM | 1600 RPM |
| Engine Bore Size | 83 mm | 83 mm |
| Engine Stroke Size | 91 mm | 92 mm |
| Top Speed | 211 km/hour | 215 km/hour |
| Acceleration 0-100mph | 9.8 seconds | 8.8 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1510 kg | 2270 kg |
| Vehicle Length | 4730 mm | 5160 mm |
| Vehicle Width | 1810 mm | 1930 mm |
| Vehicle Height | 1420 mm | 1660 mm |
| Wheelbase Size | 2710 mm | 3220 mm |
