1999 Mercedes-Benz SL vs. 2006 Mercedes-Benz GL
To start off, 2006 Mercedes-Benz GL is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 1999 Mercedes-Benz SL would be higher. At 2,987 cc (6 cylinders), 2006 Mercedes-Benz GL is equipped with a bigger engine. In terms of performance, 2006 Mercedes-Benz GL (221 HP @ 3800 RPM) has 31 more horse power than 1999 Mercedes-Benz SL. (190 HP @ 5500 RPM) In normal driving conditions, 2006 Mercedes-Benz GL should accelerate faster than 1999 Mercedes-Benz SL. With that said, vehicle weight also plays an important factor in acceleration. 2006 Mercedes-Benz GL weights approximately 694 kg more than 1999 Mercedes-Benz SL. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Mercedes-Benz GL is four wheel drive (4WD), it will have significant more traction and grip than 1999 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2006 Mercedes-Benz GL 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 GL (510 Nm @ 1600 RPM) has 239 more torque (in Nm) than 1999 Mercedes-Benz SL. (271 Nm @ 3750 RPM). This means 2006 Mercedes-Benz GL will have an easier job in driving up hills or pulling heavy equipment than 1999 Mercedes-Benz SL. 2006 Mercedes-Benz GL has automatic transmission and 1999 Mercedes-Benz SL has manual transmission. 1999 Mercedes-Benz SL will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Mercedes-Benz GL will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 Mercedes-Benz SL | 2006 Mercedes-Benz GL | |
| Make | Mercedes-Benz | Mercedes-Benz |
| Model | SL | GL |
| Year Released | 1999 | 2006 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 2799 cc | 2987 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 190 HP | 221 HP |
| Engine RPM | 5500 RPM | 3800 RPM |
| Torque | 271 Nm | 510 Nm |
| Torque RPM | 3750 RPM | 1600 RPM |
| Engine Bore Size | 89.9 mm | 83 mm |
| Engine Stroke Size | 73.5 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 | 1760 kg | 2454 kg |
| Vehicle Length | 4470 mm | 5090 mm |
| Vehicle Width | 1820 mm | 1930 mm |
| Vehicle Height | 1300 mm | 1850 mm |
| Wheelbase Size | 2520 mm | 3080 mm |
| Fuel Tank Capacity | 80 L | 100 L |
