We are looking seriously into buying a CLS 350 CDI 2011-14. This is my first car purchase in 10 years following living in cities and no need for a car full time we tended to rent one when we needed it. We love the look of the CLS and think as a younger couple we can live with 4 seats yet still give us room for a little one if that comes round the corner. The cars we have seen range in price £17,000 - £21,000 and range of mileage from 40,000 - 75,000. What i am looking for is what to look for when viewing, what services should cars of this age have received and what is likely to go wrong in the next 30,000 miles (70,000 - 105,000). We will be using this just at weekends, so i don't expect mileage to be above 8,000 pa.