2007 Lexus RX vs. 2005 Proton 400
To start off, 2007 Lexus RX is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Proton 400. In addition, the cost of maintenance, including insurance, on 2005 Proton 400 would be higher. At 3,456 cc (6 cylinders), 2007 Lexus RX is equipped with a bigger engine. In terms of performance, 2007 Lexus RX (272 HP @ 6200 RPM) has 198 more horse power than 2005 Proton 400. (74 HP @ 6000 RPM). In normal driving conditions, 2007 Lexus RX should accelerate faster than 2005 Proton 400. With that said, vehicle weight also plays an important factor in acceleration. 2007 Lexus RX weights approximately 920 kg more than 2005 Proton 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Lexus RX is four wheel drive (4WD), it will have significant more traction and grip than 2005 Proton 400. In wet, icy, snow, or gravel driving conditions, 2007 Lexus RX 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, 2007 Lexus RX (342 Nm @ 4700 RPM) has 234 more torque (in Nm) than 2005 Proton 400. (108 Nm @ 3000 RPM). This means 2007 Lexus RX will have an easier job in driving up hills or pulling heavy equipment than 2005 Proton 400. 2007 Lexus RX has automatic transmission and 2005 Proton 400 has manual transmission. 2005 Proton 400 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Lexus RX will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Lexus RX | 2005 Proton 400 | |
| Make | Lexus | Proton |
| Model | RX | 400 |
| Year Released | 2007 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 3456 cc | 1299 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 272 HP | 74 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 342 Nm | 108 Nm |
| Torque RPM | 4700 RPM | 3000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Vehicle Weight | 1910 kg | 990 kg |
| Vehicle Length | 4580 mm | 4280 mm |
| Vehicle Width | 1850 mm | 1700 mm |
| Vehicle Height | 1680 mm | 1390 mm |
| Wheelbase Size | 2730 mm | 2510 mm |
