2003 Hyundai Sonata vs. 2007 Hyundai Sonata
To start off, 2007 Hyundai Sonata is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Hyundai Sonata. In addition, the cost of maintenance, including insurance, on 2003 Hyundai Sonata would be higher. At 1,991 cc (4 cylinders), 2007 Hyundai Sonata is equipped with a bigger engine. In terms of performance, 2007 Hyundai Sonata (139 HP @ 4000 RPM) has 1 more horse power than 2003 Hyundai Sonata. (138 HP @ 5800 RPM) In normal driving conditions, 2007 Hyundai Sonata should accelerate faster than 2003 Hyundai Sonata. With that said, vehicle weight also plays an important factor in acceleration. 2007 Hyundai Sonata weights approximately 255 kg more than 2003 Hyundai Sonata. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2007 Hyundai Sonata (305 Nm @ 1800 RPM) has 125 more torque (in Nm) than 2003 Hyundai Sonata. (180 Nm @ 4500 RPM). This means 2007 Hyundai Sonata will have an easier job in driving up hills or pulling heavy equipment than 2003 Hyundai Sonata.
Compare all specifications:
| 2003 Hyundai Sonata | 2007 Hyundai Sonata | |
| Make | Hyundai | Hyundai |
| Model | Sonata | Sonata |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1983 cc | 1991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 139 HP |
| Engine RPM | 5800 RPM | 4000 RPM |
| Torque | 180 Nm | 305 Nm |
| Torque RPM | 4500 RPM | 1800 RPM |
| Engine Compression Ratio | 17.7:1 | 17.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1425 kg | 1680 kg |
| Vehicle Width | 1700 mm | 1830 mm |
| Vehicle Height | 1590 mm | 1430 mm |
| Wheelbase Size | 2710 mm | 2740 mm |
| Fuel Tank Capacity | 65 L | 70 L |
