1994-1999 S500 or S600
I've owned both models and currently own a '97 CL600. The Mercedes V-8 (119) is a work of art. It is a powerful engine, about 22mpg on the open road and has few if any problems. There are oil tubes that will eventually need replacing but they are easily accessed and relatively cheap. If you drive a car and hear a ticking sound like the old hydraulic lifters, you need oil tubes.
The 120 engine is nothing but two 103 engines on a common crank. I would be careful here and look for a low mileage vehicle. I don't foresee any problems with mine but it only had 46K on it and was a garage queen for a wealthy guy. On the 120 engines, you have two of everything, MAFs. Throttle actuators, etc, And to complicate things the halves are controlled by separate computer systems. At 46K I had to replace one MAF, an accelerometer, the engine mounts (weak point with this massive engine) changed all fluids and did the recommended 50K service. $3500 later, I drove her home! Both cars have self leveling in the rear and the 600's have ADS. this means you don't go to Pep Boys and buy a shock for $69. They are called struts and they start at about $600 each. When you are looking at a car, get it up on a rack and check the rear struts for leakage. In fact I would find an expert Mercedes mechanic and have him do a Pre Purchase Inspection. It may cost a few hundred but it can save you a fortune. You don't tell us where you live so I can't make any recommendations. If you go to the Peach forum, they list good shops all over the USA. Good luck,
Anziani
I've owned both models and currently own a '97 CL600. The Mercedes V-8 (119) is a work of art. It is a powerful engine, about 22mpg on the open road and has few if any problems. There are oil tubes that will eventually need replacing but they are easily accessed and relatively cheap. If you drive a car and hear a ticking sound like the old hydraulic lifters, you need oil tubes.
The 120 engine is nothing but two 103 engines on a common crank. I would be careful here and look for a low mileage vehicle. I don't foresee any problems with mine but it only had 46K on it and was a garage queen for a wealthy guy. On the 120 engines, you have two of everything, MAFs. Throttle actuators, etc, And to complicate things the halves are controlled by separate computer systems. At 46K I had to replace one MAF, an accelerometer, the engine mounts (weak point with this massive engine) changed all fluids and did the recommended 50K service. $3500 later, I drove her home! Both cars have self leveling in the rear and the 600's have ADS. this means you don't go to Pep Boys and buy a shock for $69. They are called struts and they start at about $600 each. When you are looking at a car, get it up on a rack and check the rear struts for leakage. In fact I would find an expert Mercedes mechanic and have him do a Pre Purchase Inspection. It may cost a few hundred but it can save you a fortune. You don't tell us where you live so I can't make any recommendations. If you go to the Peach forum, they list good shops all over the USA. Good luck,
Anziani


