Experienced owners stress that a full dealer service history or VMI is what separates a good value from a money pit, and that any 140 will have something needing attention at a PPI. Low mileage is explicitly called an unreliable indicator of value; a drivable high-miles car with no warning lights has necessarily received care, and a 'perfect' low-mile car can hide a huge deferred-maintenance bill.
Buying advice: records, PPI and a well-sorted example over low miles
Mercedes-Benz S-Class Coupe / CL (C140) · buying