CL 500 from BJ 2002. error known ?

Hello would like to buy me from my free budget ( 20,000 euro ) a CL 500 mopf ( BJ 2002, 3, 4 ). I already have the one or the other in the eye. mostly more than 100,000 KM ( which is probably not so bad in this class cars). what can you say about the CL 500. there are problems that are known ? can occur ? the car costs about 16,000 euro, thus 4000 euro in advance reserve. I would even have carried out a small workshop at hand the repairs, inspections (all cars me ister with years of experience). what would you recommend before buying ? on what should you pay attention ? mfg