There is a whole combination of issue's that appear to cause some sludging of the 1.6 psa engine casuing turbo failure,although its mostly in the Focus Model that the problem maifest's itself.

HI. my brother in laws just sold his, bought when brand new and sold with 75,000 miles and 6 years down the line. his was a 2005 reg.

at 2006 they had dpf, that required a £800 service at approx 80,000miles.

pre 2005 non of that....

he did however have a few common faults....egr failure, and a few minor electrical niggles, ie front headlight washer failure. but apart from that did well as a family hack.

he averaged early 40s to the gallon and had it serviced by a volvo dealer from new.

sold 2 months ago for £6500 in autotrader his was fitted with cream leather etc etc...

Had a 1.6 TDCI in a Focus for 5 years, no problems at all but since it was Euro 3 it did not have a dpf or additive to wory about.

When we swapped the car decided to get the same again but fortunately decided to check about the additive mularky since it was new to us. Mr Ford said that a top up is required every 3 years or 36,000 miles due to problems with earlier cars running out, £100 a time. He also said that dpf replacement is now a service item at 6 years or 72,000 miles, £1000 approx.

Wisely we bought elsewhere but a real shame since the car had been so good..

On the plus side, my Focus 1.6TDCI is currently doing 60mpg