With cars like these, they're meant to be driven on the highway A LOT and I mean A LOT. They're meant to last a long time and one person from our dealer actually told us that the more you drive them, the less problems you have. Keep in mind that you should be aware that Mercedes-Benz were having some quality problems that time and you may experience some minor problems, such as wood trim that pop up, but by this time, the previous owner probably got it taken care of. In the US, it is possible to find an S-Class of that age with around 40,000-60,000 miles. We have an S430 with 65,000 miles and it runs great. With these cars, DO NOT BRING THEM TO THE CAR WASH EVER AS EVERY LUXURY CARS NEEDS PROPER CARE WHEN CLEANING. If I were you, I would see every car in person just to make sure it's perfect ;)