Can anyone tell me weather the 1.8 diesel is that much better than the 1.6 as looking into buying a new CMax 1.6 is obviously cheaper but stats say the performance, economy and power differences are very little.
The 1.8 is a modified version of the diesel out of the old Focus and can trace it's family tree a lot further back than that.
The 1.6 comes from the joint venture with PSA Peugeot-Citroen and is found everywhere (including the Mini - so good enough for BMW).
The suggestion on various forums that I've seen over time is that the 1.6 is the better unit all round - quieter, more frugal and not really slower in real world. The early 1.6 definitely had their problems but it seems that they are now a very mature and reliable unit. Apparently the new Focus (next year) will have a version with about 130bhp.