2003 Lexus IS vs. 2007 Lexus GS
To start off, 2007 Lexus GS is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Lexus IS. In addition, the cost of maintenance, including insurance, on 2003 Lexus IS would be higher. At 4,293 cc (8 cylinders), 2007 Lexus GS is equipped with a bigger engine. In terms of performance, 2007 Lexus GS (290 HP @ 5600 RPM) has 137 more horse power than 2003 Lexus IS. (153 HP @ 6200 RPM) In normal driving conditions, 2007 Lexus GS should accelerate faster than 2003 Lexus IS. With that said, vehicle weight also plays an important factor in acceleration. 2007 Lexus GS weights approximately 286 kg more than 2003 Lexus IS. 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, 2007 Lexus GS (433 Nm @ 3400 RPM) has 237 more torque (in Nm) than 2003 Lexus IS. (196 Nm @ 4600 RPM). This means 2007 Lexus GS will have an easier job in driving up hills or pulling heavy equipment than 2003 Lexus IS. 2007 Lexus GS has automatic transmission and 2003 Lexus IS has manual transmission. 2003 Lexus IS will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Lexus GS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Lexus IS | 2007 Lexus GS | |
| Make | Lexus | Lexus |
| Model | IS | GS |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1988 cc | 4293 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 153 HP | 290 HP |
| Engine RPM | 6200 RPM | 5600 RPM |
| Torque | 196 Nm | 433 Nm |
| Torque RPM | 4600 RPM | 3400 RPM |
| Engine Bore Size | 75 mm | 91 mm |
| Engine Stroke Size | 75 mm | 82.5 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1400 kg | 1686 kg |
| Vehicle Length | 4410 mm | 4830 mm |
| Vehicle Width | 1730 mm | 1830 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2680 mm | 2860 mm |
| Fuel Tank Capacity | 70 L | 71 L |
